CN106788811A - A kind of computational methods of digital communication system and the bit error rate - Google Patents
A kind of computational methods of digital communication system and the bit error rate Download PDFInfo
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- CN106788811A CN106788811A CN201611115544.8A CN201611115544A CN106788811A CN 106788811 A CN106788811 A CN 106788811A CN 201611115544 A CN201611115544 A CN 201611115544A CN 106788811 A CN106788811 A CN 106788811A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0076—Distributed coding, e.g. network coding, involving channel coding
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Abstract
This application provides a kind of digital communication system and the computational methods of the bit error rate, one of which method includes：Receive and store and send the first coding data that method, apparatus are sent by channel to be measured；Wherein, first coding data by information source data by after channel coding obtain；Error-correction decoding operation is carried out to the first coding data；After to the success of first coding data error correction decoding, the information source data to being obtained after error correction decoding carry out phase-reversal coding, obtain the second coded data；Based on the first coding data and second coded data, the bit error rate of the channel to be measured is calculated.The computational methods of the bit error rate that the application is provided, can calculate the bit error rate, so as to lift channel resource utilization rate in the case where receiver equipment need not prestore information source data.
Description
Technical field
The application is related to communication technical field, more particularly to a kind of digital communication system and the bit error rate computational methods.
Background technology
In digital communication systems, channel quality is the important evidence for judging systematic function.The bit error rate is to a certain extent
Channel quality can be characterized.The bit error rate is the ratio of error bit number and all bit numbers.Mistake is represented if the bit error rate is larger
Bit number is more, i.e., channel quality is poor；Represent that error bit number is less if the bit error rate is smaller, i.e., channel quality is preferable；Institute
So that channel quality can be characterized using the bit error rate.
In order to calculate the bit error rate, usual method is：Send method, apparatus and receiver equipment prestores identical information source number
According to, then send method, apparatus and information source data are sent to receiver equipment by channel, then receiver equipment will receive information source
Data are contrasted with the information source data for prestoring, so that it is determined that the error bit number gone out in the information source data for receiving, most
Afterwards, by the quotient of error bit number and the bit number of information source data, be defined as the bit error rate.
Although determining that channel quality is most accurate using the bit error rate.But, it is hair that the premise of the bit error rate is calculated at present
Method, apparatus and receiver equipment is sent to prestore identical information source data, for receiver equipment, sending method, apparatus is
It is given data by the information source data of transmission.In digital communication systems, it is to channel resource that communicating pair sends given data
Waste, can so influence other business to use channel resource.
The content of the invention
In consideration of it, this application provides a kind of computational methods of the bit error rate, so as to not deposited in advance in receiver equipment
The bit error rate is calculated in the case of storage information source data, so as to lift channel resource utilization rate.
To achieve these goals, this application provides following technological means：
A kind of computational methods of the bit error rate, including：
Receive and store and send the first coding data that method, apparatus are sent by channel to be measured；Wherein, first coding data
By information source data by being obtained after channel coding；
Error-correction decoding operation is carried out to the first coding data；
After to the success of first coding data error correction decoding, the information source data to being obtained after error correction decoding are reversely compiled
Code, obtains the second coded data；
Based on the first coding data and second coded data, the bit error rate of the channel to be measured is calculated.
Preferably, also include：
When failing to first coding data error correction decoding, the bit error rate for setting channel to be measured is preset characters.
Preferably, also include：
When failing to first coding data error correction decoding, can judgement decode data type field；
If data type field is successfully decoded out, and, data type field is preset kind, then from first coded number
According to the first data symbols of middle acquisition；
It is determined that data content corresponding with the preset kind, and phase-reversal coding is carried out to the data content, obtain the
Two data symbols；
Based on first data symbols and second data symbols, the bit error rate of the channel to be measured is calculated.
Preferably, also include：
If decoding data type field not successfully, or, the non-default type of data type field that decoding is obtained, then set
The bit error rate of channel to be measured is preset characters.
Preferably, before error-correction decoding operation is carried out to the first coding data, also include：In first coding data
Middle execution getting frame synchronous data operation；Then methods described also includes：
If if if to the failure of first coding data error correction decoding or it is failed decode data type field or into
Whether work(decodes data type field but the non-default type of data type field, then judge successfully obtained in first coding data
Take the first frame synchronization data；
If successfully obtaining the first frame synchronization data in first coding data, the first frame synchronization data are stored；
The second frame synchronization data are determined in memory space；
Based on the first frame synchronization data and the second frame synchronization data, the bit error rate of the channel to be measured is calculated.
Preferably, also include：
If failed in first coding data obtain the first frame synchronization data, the bit error rate for setting channel to be measured is pre-
If character.
Preferably, also include：
Calculate multiple bit error rates of channel to be measured；
Multiple bit error rates based on channel to be measured, determine the average error rate of channel to be measured.
Preferably, the multiple bit error rates based on channel to be measured, determine the average error rate of channel to be measured, including：
Judge multiple bit error rates of channel to be measured whether comprising preset characters；
If multiple bit error rates of channel to be measured do not include preset characters, by the average of multiple bit error rates of channel to be measured
Value, is defined as the average error rate of channel to be measured.
Preferably, also include：
If multiple bit error rates of channel to be measured include preset characters, judge whether to include in multiple bit error rates more than half
Preset characters；
If including preset characters more than half in multiple bit error rates, the bit error rate for setting channel to be measured is present count
Value.
Preferably, also include：
If not including preset characters more than half in multiple bit error rates, whether judge in multiple bit error rates comprising 1/
More than 4 preset characters；
If comprising more than 1/4 preset characters in multiple bit error rates, each preset characters is entered as 5%, and and its
The error rate calculation average value of its non-default character, the average value is defined as the average error rate of channel to be measured；
If after each preset characters is excluded, calculating other not comprising more than 1/4 preset characters in multiple bit error rates
The average value of the bit error rate of non-default character, the average value is defined as the average error rate of channel to be measured.
A kind of digital communication system, including：
Method, apparatus are sent, for the first coding data sent by channel to be measured；Wherein, first coding data is by information source
Data after channel coding by obtaining；
Receiver equipment, for receiving and stores the first coding data, and error correction is carried out to the first coding data
Decoding operate；After to the success of first coding data error correction decoding, the information source data to being obtained after error correction decoding are reversely compiled
Code, obtains the second coded data；Based on the first coding data and second coded data, the channel to be measured is calculated
The bit error rate.
A kind of computational methods of the bit error rate, including：
Receive and send the first coding data that method, apparatus are sent by channel to be measured；Wherein, first coding data is by information source
Data after channel coding by obtaining；
The operation of getting frame synchrodata is performed in the first coding data；
If success obtains the first frame synchronization data in first coding data, the first frame synchronization data are stored；
The second frame synchronization data are determined in memory space；
Based on the first frame synchronization data and the second frame synchronization data, the bit error rate of channel to be measured is calculated.
Preferably, also include：
If obtaining the first frame synchronization data in first coding data not successfully, the bit error rate for setting channel to be measured is pre-
If character.
A kind of digital communication system, including：
Method, apparatus are sent, for the first coding data sent by channel to be measured；Wherein, first coding data is by information source
Data after channel coding by obtaining；
Receiver equipment, the first coding data that is sent by channel to be measured of method, apparatus is sent for receiving, described the
The operation of getting frame synchrodata is performed in one coded data；If success obtains the first frame synchronization number in first coding data
According to then storing the first frame synchronization data；The second frame synchronization data are determined in memory space；It is same based on first frame
Step data and the second frame synchronization data, calculate the bit error rate of channel to be measured.
A kind of computational methods of the bit error rate, including：
Receive and send the first coding data that method, apparatus are sent by channel to be measured；Wherein, first coding data is by information source
Data after channel coding by obtaining；
During carrying out error correction decoding to the first coding data, can judgement decode data type field；
If data type field being successfully decoded out and data type field being preset kind, obtained from first coding data
Take the first data symbols；
It is determined that data content corresponding with the preset kind, and phase-reversal coding is carried out to the data content, obtain the
Two data symbols；
Based on first data symbols and second data symbols, the bit error rate of channel to be measured is calculated.
Preferably, also include：
If decoding data type field not successfully, or, the non-default type of data type field, then it is pre- to set the bit error rate
If character.
A kind of digital communication system, including：
Method, apparatus are sent, for the first coding data sent by channel to be measured；Wherein, first coding data is by information source
Data after channel coding by obtaining；
Receiver equipment, the first coding data that is sent by channel to be measured of method, apparatus is sent for receiving, to described the
During one coded data carries out error correction decoding, can judgement decode data type field；If data class is successfully decoded out
Type-word section and data type field be preset kind, then the first data symbols are obtained from first coding data；It is determined that with it is described
The corresponding data content of preset kind, and phase-reversal coding is carried out to the data content, obtain the second data symbols；Based on described
First data symbols and second data symbols, calculate the bit error rate of channel to be measured.
A kind of receiver equipment, including：
First communication module, the first coding data that method, apparatus are sent by channel to be measured is sent for receiving；Wherein,
One coded data is by information source data by being obtained after channel coding；
Memory, the first coding data that method, apparatus are sent by channel to be measured is sent for storing；
First processor, for carrying out error-correction decoding operation to the first coding data, entangles to first coding data
After wrong successfully decoded, the information source data to being obtained after error correction decoding carry out phase-reversal coding, the second coded data are obtained, based on described
First coding data and second coded data, calculate the bit error rate of the channel to be measured.
A kind of receiver equipment, including：
Second communication module, the first coding data that method, apparatus are sent by channel to be measured is sent for receiving；Wherein,
One coded data is by information source data by being obtained after channel coding；
Second processing device, the operation for performing getting frame synchrodata in the first coding data, if success exists
The first frame synchronization data are obtained in first coding data, then stores the first frame synchronization data, determined in memory space
Second frame synchronization data；Based on the first frame synchronization data and the second frame synchronization data, the error code of channel to be measured is calculated
Rate.
A kind of receiver equipment, including：
Third communication module, the first coding data that method, apparatus are sent by channel to be measured is sent for receiving；Wherein,
One coded data is by information source data by being obtained after channel coding；
3rd processor, during carrying out error correction decoding to the first coding data, can judgement decode
Data type field, if it is preset kind that data type field and data type field is successfully decoded out, from the first coded number
The first data symbols are obtained according to middle, it is determined that data content corresponding with the preset kind, and the data content is carried out instead
To coding, the second data symbols are obtained, based on first data symbols and second data symbols, calculate channel to be measured
The bit error rate.
By above technological means, it is possible to achieve following beneficial effect：
The application provides a kind of computational methods of the bit error rate, and the application recipient is based on first coding data and passes through error correction solution
Code obtains information source data, without storing information source data in receiver equipment；Then phase-reversal coding is carried out to information source data again to obtain
The second coded data is obtained, the error code of channel to be measured is obtained by the way that first coding data and the second coded data are contrasted
Rate.
Because the application need not store information source data in receiver equipment, so, receiver equipment is unaware of sending
The information source data that method, apparatus send.That is, method, apparatus are sent in the application and receiver equipment does not send given data, so will not
Waste is caused to channel resource, to lift the utilization rate of channel resource.
Brief description of the drawings
In order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of application, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 a-1c are the structural representation of digital communication system.
A kind of flow chart of the computational methods of bit error rate that Fig. 2 is provided for the application；
The flow chart of the computational methods of another bit error rate that Fig. 3 is provided for the application；
The flow chart of the computational methods of another bit error rate that Fig. 4 is provided for the application；
The flow chart of the computational methods of another bit error rate that Fig. 5 is provided for the application；
The flow chart based on multiple error rate calculation bit error rates that Fig. 6 is provided for the application.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.It is based on
Embodiment in the application, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of the application protection.
The application scenarios of the application are described below, communicating pair is referred to as sending method, apparatus and reception in digital communication systems
Method, apparatus.The scheme that the application is provided can be arranged on receiver equipment, so that receiver equipment is receiving number by channel
After according to object, the channel quality of channel can be determined based on data object.
The communicating pair in digital communication system is illustrated below, so that those skilled in the art can understand
Understand the application scenarios of the application.
Referring to Fig. 1 a, communicating pair can be base station and terminal, and base station (transmission method, apparatus) can be by channel to terminal
(receiver equipment) sends data；Terminal (transmission method, apparatus) can also send number by channel to base station (receiver equipment)
According to.
Referring to Fig. 1 b, communicating pair can also be terminal and signal-relay station.Signal-relay station (transmission method, apparatus) can be by channel
Data are sent to terminal (receiver equipment)；Terminal (transmission method, apparatus) can also be by channel to signal-relay station (receiver equipment)
Send data.
Referring to Fig. 1 c, communicating pair can also be two terminals：First terminal and second terminal.First terminal (sender
Equipment) data can be sent to second terminal (receiver equipment) by channel；Second terminal (transmission method, apparatus) can also lead to
Cross channel and send data to first terminal (receiver equipment).
Terminal in Fig. 1 a- Fig. 1 c represented using digital handset in the example shown, but in the application terminal scope not
Digital handset is defined to, can also be the equipment such as smart mobile phone, panel computer, desktop computer.
Certainly, the communicating pair in digital communication system can also have other implementations, no longer arrange one by one herein
Lift.
There is a plurality of channel between communicating pair in digital communication systems, every mistake of the channel quality of channel is determined
Journey is consistent.Therefore, by taking a channel in a plurality of channel as an example, the process of pair determination channel quality is carried out in detail the application
Description.For the ease of description, this channel is referred to as channel to be measured.
In digital communication systems, the DMR frames in a digital mobile terminal (Digital Mobile Radio, DMR)
Length is 60ms, accounts for 2 time slots, and each time slot accounts for 30ms.One time slot is referred to as protocol Data Unit (Protocol Data
Unit, protocol Data Unit), i.e. each PDU frame accounts for 30ms.
If calculating the bit error rate between terminal and terminal, the corresponding terminal of receiver equipment can only calculate one of them
The bit error rate of time slot i.e. 30ms information source data.If the bit error rate between terminal and signal-relay station, or in terminal and base station
Between calculate the bit error rate because signal-relay station and base station in the two of DMR frames time slots all send data, recipient
Equipment can select a time slot in DMR frames to calculate the bit error rate, it is also possible to by the information source data of two time slots in DME frames all
For calculating the bit error rate.
This application provides a kind of various implementations of the computational methods of the bit error rate, various implementations are distinguished below
Describe in detail.
The first implementation：The bit error rate is calculated using first coding data.
As shown in Fig. 2 the present embodiment provides a kind of embodiment one of the computational methods of the bit error rate, following step is specifically included
Suddenly：
Step S201：Send method, apparatus and first coding data is sent to receiver equipment by channel to be measured.Wherein, first
Coded data is by information source data by being obtained after channel coding.
The purpose of channel coding is the influence in order to overcome noise and interference in channel to information source data.Channel coding
Process be according to certain (supervision) rule in the code element of information to be sent some necessary supervision code elements of (artificial) addition.
So can be in order to receiver equipment using the supervision rule between these supervision code elements and information code element, it is poor to find and correct
Mistake, such that it is able to improve the reliability of the transmission of information code element.
Technical staff can set pre-arranged code rule before this step.Sending method, apparatus can advise according to pre-arranged code
Rule carries out channel coding to information source data, and obtains the first coding data after channel coding.Sending method, apparatus can obtain the
One coded data, is then sent to receiver equipment first coding data by channel to be measured.
Step S202：Receiver equipment is received and stores the first coding data.
Receiver equipment stores first coding data first after first coding data is received, and error code is calculated so as to follow-up
Used during rate.
Step S203：Receiver equipment carries out error-correction decoding operation to the first coding data, if error correction decoding success,
Then enter step S204；Enter step S206 if error correction decoding failure.
Step S204：Information source data to being obtained after error correction decoding carry out phase-reversal coding, obtain the second coded data.
Because first coding data is influenceed in transmitting procedure by channel to be measured, it is possible that mistake.Therefore, receive
Method, apparatus can carry out error correction decoding after first coding data is received to first coding data, so as to by first coding data
During being reduced into information source data, find the error bit in first coding data and error bit is corrected, so that
Obtain the information source data after error correction decoding.
In this application, the information source data that will be obtained after error correction decoding, regard correct information source data as.I.e. the application recognizes
For：The information source data obtained after error correction decoding, with the information source data that sending method, apparatus is carried out before channel coding are consistent.
Due to transmit in the channel to be measured information source data are encoded after first coding data, so, in order to count
The bit error rate is calculated, after the information source data after step S204 obtains error correction decoding, letter also is carried out to the information source data after error correction decoding
Road is encoded.Channel coding and error correction decoding mutually inverse process each other, so, information source data are carried out with the process of the coding of channel,
It is known as phase-reversal coding.
In order to be made a distinction with first coding data, this step acquisition coded data is referred to as the second coded data.First
Coded data by information source data by channel coding, also, by transmission to be measured；Second coded data is by information source data
(correct information source data) carry out channel coding.If channel to be measured is in the absence of interference and noise, first coding data and the
Two coded datas ought to be consistent.
But, actually it is not so, first coding data can be subject to channel to be measured in the transmitting procedure of channel to be measured
Interference and there is error bit.The channel quality of channel to be measured is poorer, then the error bit for occurring in first coding data is got over
Many, the channel quality of channel to be measured is better, then the error bit for occurring in first coding data is fewer.
Step S205：Based on the first coding data and second coded data, the bit error rate of channel to be measured is calculated.
In order to determine channel quality, first coding data and the second coded data can be contrasted.Due to the second volume
Code data without channel to be measured, it is believed that all bits are correct in the second coded data.
First coding data and the second coded data are contrasted, so that it is determined that the mistake ratio gone out in first coding data
Special number；Then, by error bit number and the quotient of all bit numbers of the second coded data, the bit error rate is calculated.If the bit error rate compared with
Greatly, then illustrate that the channel quality of channel to be measured is poor；If the bit error rate is smaller, illustrate that the channel quality of channel to be measured is preferable.
Step S206：If failing to first coding data error correction decoding, the setting bit error rate is preset characters.
It is -118dB~-120dB that receiving sensitivity is typically required in digital communicating field at present, and the corresponding bit error rate is
About 5%.In this case the first coding data for receiving is can be by error correction decoding, if the first coding for receiving
Data can not then directly give the bit error rate for preset characters by Error Correction of Coding.
The implication of preset characters is equal to the bit error rate and is equal to -120dB beyond 5%, i.e. wireless signal field.Predetermined word
According with can be represented using NULL, or, represented using MAX, or, it is indicated using other symbols.
It is corresponding with the method shown in Fig. 2, present invention also provides a kind of receiver equipment, specifically include：
First communication module, the first coding data that method, apparatus are sent by channel to be measured is sent for receiving；Wherein,
One coded data is by information source data by being obtained after channel coding；
Memory, the first coding data that method, apparatus are sent by channel to be measured is sent for storing；
First processor, for carrying out error-correction decoding operation to the first coding data, entangles to first coding data
After wrong successfully decoded, the information source data to being obtained after error correction decoding carry out phase-reversal coding, the second coded data are obtained, based on described
First coding data and second coded data, calculate the bit error rate of the channel to be measured.
Second implementation：The bit error rate is calculated using frame synchronization data.
As shown in figure 3, the present embodiment provides a kind of embodiment two of the computational methods of the bit error rate, following step is specifically included
Suddenly：
Step S301：Send method, apparatus and first coding data is sent to receiver equipment by channel to be measured.Wherein, first
Coded data is by information source data by being obtained after channel coding.
The implementation procedure of this step is consistent with step S201, will not be repeated here.
Step S302：Receiver equipment receives first coding data, and acquisition frame synchronization is performed in first coding data
Data manipulation；If success getting frame synchrodata, into step S303；Otherwise enter step S306.
Frame synchronization data are that receiver equipment can distinguish the starting of frame and terminate from the first coding data for receiving
Data.Each frame is 60ms in time-division multiple address system, is divided into two time slots, and each frame is data frame or speech frame.Each
Single data frame Intermediate Gray synchronization, the Intermediate Gray synchronization of first speech frame of every six speech frames.
Because the first coding data that receiver equipment is received is a frame information source data, or is an information source for time slot
Data, so receiver equipment receives first coding data and not necessarily has frame synchronization data.Receiver equipment can be first
Getting frame synchrodata in coded data, if getting frame synchrodata can be succeeded, into step 303.
Step S303：If success obtains the first frame synchronization data in first coding data, first frame is stored same
Step data.
For subsequent descriptions, the frame synchronization data in first coding data are referred to as the first frame synchronization data.Due to first
Frame synchronization data are present in first coding data, in first coding data by after transmission to be measured, may result in
There is mistake in first frame synchronization data.Therefore, it can calculate the bit error rate based on the first frame synchronization data.
Step S304：Receiver equipment determines the second frame synchronization data in memory space.
Because frame synchronization data are, for carrying out frame synchronization, therefore to send method, apparatus and receiver equipment is appointed in advance
The occurrence of frame synchronization data is set, for example, being 10110000.That is：The frame synchronization that is stored with receiver equipment number
According to correct data value.For the ease of distinguishing the frame synchronization data that will be stored in receiver equipment, referred to as the second frame synchronization data.
Step S305：Based on the first frame synchronization data and the second frame synchronization data, the bit error rate of channel to be measured is calculated.
In order to determine channel quality, the first frame synchronization data and the second frame synchronization data can be contrasted.Due to
Two frame synchronization data are without channel to be measured, it is believed that all bits are correct in the second frame synchronization data.
First frame synchronization data and the second frame synchronization data are contrasted, so that it is determined that going out in the first frame synchronization data
Error bit number；Then, by error bit number and the quotient of all bit numbers of the second frame synchronization data, the bit error rate is calculated.If
The bit error rate is larger, then illustrate that the channel quality of channel to be measured is poor；If the bit error rate is smaller, the channel quality of channel to be measured is illustrated
Preferably.
Step S306：If failed obtain the first frame synchronization data in first coding data, it is pre- to set the bit error rate
If character.Step S206 is referred to, be will not be repeated here.
It is corresponding with the method shown in Fig. 3, present invention also provides a kind of receiver equipment, specifically include：
Second communication module, the first coding data that method, apparatus are sent by channel to be measured is sent for receiving；Wherein,
One coded data is by information source data by being obtained after channel coding；
Second processing device, the operation for performing getting frame synchrodata in the first coding data, if success exists
The first frame synchronization data are obtained in first coding data, then stores the first frame synchronization data, determined in memory space
Second frame synchronization data；Based on the first frame synchronization data and the second frame synchronization data, the error code of channel to be measured is calculated
Rate.
The third implementation：The bit error rate is calculated using the corresponding data value of preset kind.
As shown in figure 4, the present embodiment provides a kind of embodiment three of the computational methods of the bit error rate, following step is specifically included
Suddenly：
Step S401：Send method, apparatus and first coding data is sent to receiver equipment by channel to be measured.Wherein, first
Coded data is by information source data by being obtained after channel coding.
The process of step S401 is consistent with the process of step S201, will not be repeated here.
Step S402：Receiver equipment receives the first coding data, and carries out error correction to the first coding data
Judge that data type field can be decoded during decoding；Enter step if data type field is successfully decoded out
S403.If decoding data type field not successfully, into step S407.
The field (data type) of data type, the type for representing information source data.Sending method, apparatus can be to reception
Method, apparatus send polytype information source data, an information source data only one of which data type.Numerous types of data includes：Cloth
That type, character types, integer type, IDLE types.
Step S403：Judge whether data type field is preset kind；If preset kind then enters step S404, if
Non-default type field then enters step S407.
In multiple types that sender sends, the corresponding data content of some data types is to determine.Such as, IDLE classes
Type, IDLE types represent idle data, that is, represent idle frame.The corresponding information source data of idle frame are predetermined.Current
Digital communication system in only have IDLE types corresponding information source data to be to determine for the time being, however not excluded that subsequently there are other data
The corresponding information source of type is also to determine.
Step S404：If data type field is preset kind, the first data symbols are obtained from first coding data.
Because first coding data includes the contents such as data symbols and data type field, so, from first coding data
Middle acquisition data symbols, the bit error rate is calculated for follow-up.
Step S405：Receiver equipment determines data content corresponding with the preset kind, and to the data content
Phase-reversal coding is carried out, the second data symbols are obtained.
Because data content corresponding with preset kind is sent known to method, apparatus and receiver equipment, so, receive
Method, apparatus can according to preset kind determine send method, apparatus send and come data content.Then, data content is carried out
Phase-reversal coding, in order to be made a distinction with the first data symbols, is represented with second code element data.
Step S406：Based on the first data symbols and the second data symbols, the bit error rate of channel to be measured is calculated.
In order to determine channel quality, the first data symbols and the second data symbols can be contrasted.Due to the second number
According to code element without channel to be measured, it is believed that all bits are correct in the second data symbols.
First data symbols and the second data symbols are contrasted, so that it is determined that the mistake ratio gone out in the first data symbols
Special number；Then, by error bit number and the quotient of all bit numbers of the second data symbols, the bit error rate is calculated.If the bit error rate compared with
Greatly, then illustrate that the channel quality of channel to be measured is poor；If the bit error rate is smaller, illustrate that the channel quality of channel to be measured is preferable.
Step S407：The setting bit error rate is preset characters.Step S206 is referred to, be will not be repeated here.
It is corresponding with the method described in Fig. 4, present invention also provides a kind of receiver equipment, specifically include：
Third communication module, the first coding data that method, apparatus are sent by channel to be measured is sent for receiving；Wherein,
One coded data is by information source data by being obtained after channel coding；
3rd processor, during carrying out error correction decoding to the first coding data, can judgement decode
Data type field, if it is preset kind that data type field and data type field is successfully decoded out, from the first coded number
The first data symbols are obtained according to middle, it is determined that data content corresponding with the preset kind, and the data content is carried out instead
To coding, the second data symbols are obtained, based on first data symbols and second data symbols, calculate channel to be measured
The bit error rate.
4th kind of implementation：The synthesis side of the first implementation, second implementation and the third implementation
Formula.
As shown in figure 5, the present embodiment provides a kind of example IV of the computational methods of the bit error rate, following step is specifically included
Suddenly：
Step S501：Send method, apparatus and first coding data is sent to receiver equipment by channel to be measured.Wherein, first
Coded data is by information source data by being obtained after channel coding.
Step S502：Receiver equipment is received and stores the first coding data.
Step S503：Receiver equipment performs getting frame synchronous data operation in first coding data.
If success getting frame synchrodata, carries out frame synchronizing process；Do not performed if failed getting frame synchrodata
Frame synchronizing process.
Step S504：Error correction decoding is carried out to the first coding data, if error correction decoding success, into step
S505；Enter step S506 if to the failure of first coding data error correction decoding.
Step S505：Information source data to being obtained after first coding data error correction decoding carry out phase-reversal coding, obtain second
Coded data, based on the first coding data and second coded data, calculates the bit error rate of channel to be measured.
Step S506：Judge whether successfully obtain the first frame synchronization data in step S503；If so, then entering step
S507；If it is not, then entering step S508.
Step S507：If successfully obtaining the first frame synchronization data in first coding data, first frame is stored same
Step data, determines the second frame synchronization data in memory space, and based on the first frame synchronization data and the second frame synchronization data,
Calculate the bit error rate of channel to be measured.
Step S508：Whether error correction decoding is successful to judge data type field；If success, into step S509, otherwise
Into step S510.
Step S509：If data type field is preset kind, the first data symbols are obtained from first coding data,
Receiver equipment determines data content corresponding with the preset kind, and carries out phase-reversal coding to the data content, obtains
Second data symbols, based on the first data symbols and the second data symbols, calculate the bit error rate of channel to be measured.
Step S510：The setting bit error rate is preset characters.
5th kind of implementation：The bit error rate is obtained by application programming interfaces.
It is found by the applicant that having the application programming interfaces for calculating the bit error rate in digital communication systems.Application programming interfaces can
With in setting and receiver equipment, it is also possible to be arranged on the third party device outside receiver equipment and transmission method, apparatus.
So receiver equipment is after first coding data is received, the application programming interfaces for calculating the bit error rate can be called,
If invoked procedure normally if obtain the bit error rate；If occurring exception in invoked procedure, if the setting bit error rate is preset characters.
In digital communication systems, information source data have two types, data type and sound-type.Two kinds of place
Reason mode is slightly different, so, the application programming interfaces for calculating the bit error rate have two：Standard error correction corresponding with data type
Algorithm interface, and, the encoding and decoding interface in vocoder corresponding with sound-type.
Above-mentioned the first implementation, to the 5th kind of implementation, is only to determine a process for the bit error rate.Can manage
Solution, the bit error rate determined according to an information source data may be inaccurate, so, can be by the process of the above-mentioned calculating bit error rate
Perform repeatedly, so as to obtain multiple bit error rates of channel to be measured, then determine the average of channel to be measured based on multiple bit error rates again
The bit error rate, average error rate is the channel quality of channel to be measured.
It is the flow chart that channel to be measured is determined based on multiple bit error rates referring to Fig. 6.
Step S601：Whether judge in multiple bit error rates of channel to be measured comprising preset characters.If not, into step
S602, if so, then entering step S603.
The numerical value that the bit error rate does not determine is illustrated if the bit error rate is preset characters, it is therefore desirable to carry out specially treated.Cause
Whether this, in the case where there is multiple bit error rates, first determine whether in multiple bit error rates comprising preset characters.
Step S602：If not including preset characters in multiple bit error rates, the average value of multiple bit error rates is defined as treating
Survey the average error rate of channel.
If not including preset characters in multiple bit error rates, specially treated, the mistake directly averaged need not be carried out
Journey.
Step S603：If including preset characters in multiple bit error rates, judge whether to include in multiple bit error rates more than half
Preset characters；If so, then entering step S604；Otherwise enter step S605.
If including preset characters in multiple bit error rates, specially treated is carried out.Because the quantity of preset characters is different, treatment
Process is also not quite similar.Determine whether the preset characters in multiple bit error rates exceed first more than half.
Step S604：The bit error rate for setting channel to be measured is default value.
If multiple bit error rates comprise more than preset characters more than half, illustrate that the bit error rate of channel to be measured is very high,
The bit error rate that channel to be measured can directly be set is default value.Default value is the number for representing channel bit error rate maximum to be measured
Value.
Step S605：Whether judge in multiple bit error rates comprising more than 1/4 preset characters；If so, then entering step
S606；Otherwise enter step S607.
Step S606：Each preset characters is entered as 5%, and it is average with the error rate calculation of other non-default characters
Value, the average value is defined as the average error rate of channel to be measured.
The implication of preset characters is equal to the bit error rate beyond 5%, if comprising more than 1/4 predetermined word in multiple bit error rates
Symbol, less than 1/2 preset characters.In the case, illustrate channel to be measured has certain bit error rate.In order to accurately calculate to be measured
Preset characters are entered as 5% by the bit error rate of channel, setting, the average value of all bit error rates are then calculated, so as to obtain to be measured
The average error rate of channel.
Step S607：If not comprising more than 1/4 preset characters in multiple bit error rates, excluding each preset characters
Afterwards, the average value of the bit error rate of other non-default characters is calculated, the average value is defined as the average error rate of channel to be measured.
If comprising more than 1/4 preset characters in multiple bit error rates, illustrating that the quality of channel to be measured is good, occur once in a while
One or two preset characters, it may be possible to special circumstances.Therefore, preset characters can be excluded in the case of this, remaining mistake is directly used
Code check calculates average error rate.
Above-mentioned steps are described in detail by an instantiation below：
For example, as a example by obtaining 10 bit error rates, it is assumed that preset characters are NULL.
If the quantity of NULL is equal to or over half (i.e. 5 ber values are NULL), need not calculate again, can
To immediately arrive at the bit error rate more than 5% (bit error rate maximum), equivalent field intensity is -120dB.
If having 3 to 4 NULL values in 10 bit error rates, by each NULL value assign 5% the bit error rate, and and other
The bit error rate is averaged.
If there are 1 to 2 NULL values in 10 bit error rate intermediate values, other bit error rates are only calculated when calculating ber value
Average value.
By above technological means, it is possible to achieve following beneficial effect：
The application provides a kind of computational methods of the bit error rate, and the application recipient is based on first coding data and passes through error correction solution
Code obtains information source data, without storing information source data in receiver equipment；Then phase-reversal coding is carried out to information source data again to obtain
The second coded data is obtained, the error code of channel to be measured is obtained by the way that first coding data and the second coded data are contrasted
Rate.
Because the application need not store information source data in receiver equipment, so, receiver equipment is unaware of sending
The information source data that method, apparatus send.That is, method, apparatus are sent in the application and receiver equipment does not send given data, so will not
Waste is caused to channel resource, to lift the utilization rate of channel resource.
If function described in the present embodiment method is to realize in the form of SFU software functional unit and as independent product pin
When selling or using, can store in a computing device read/write memory medium.Based on such understanding, the embodiment of the present application
The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, and this is soft
Part product is stored in a storage medium, including some instructions are used to so that computing device (can be personal computer,
Server, mobile computing device or network equipment etc.) perform all or part of step of the application each embodiment methods described
Suddenly.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), deposit at random
Access to memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment same or similar part mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the application.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can in other embodiments be realized in the case where spirit herein or scope is not departed from.Therefore, the application
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The scope most wide for causing.
Claims (20)
1. a kind of computational methods of the bit error rate, it is characterised in that including：
Receive and store and send the first coding data that method, apparatus are sent by channel to be measured；Wherein, first coding data is by believing
Source data after channel coding by obtaining；
Error-correction decoding operation is carried out to the first coding data；
After to the success of first coding data error correction decoding, the information source data to being obtained after error correction decoding carry out phase-reversal coding, obtain
Obtain the second coded data；
Based on the first coding data and second coded data, the bit error rate of the channel to be measured is calculated.
2. the method for claim 1, it is characterised in that also include：
When failing to first coding data error correction decoding, the bit error rate for setting channel to be measured is preset characters.
3. the method for claim 1, it is characterised in that also include：
When failing to first coding data error correction decoding, can judgement decode data type field；
If data type field is successfully decoded out, and, data type field is preset kind, then from the first coding data
Obtain the first data symbols；
It is determined that data content corresponding with the preset kind, and phase-reversal coding is carried out to the data content, obtain second and count
According to code element；
Based on first data symbols and second data symbols, the bit error rate of the channel to be measured is calculated.
4. method as claimed in claim 3, it is characterised in that also include：
If decoding data type field not successfully, or, the non-default type of data type field that decoding is obtained, then set to be measured
The bit error rate of channel is preset characters.
5. method as claimed in claim 3, it is characterised in that the first coding data is carried out error-correction decoding operation it
Before, also include：Getting frame synchronous data operation is performed in first coding data；Then methods described also includes：
If if if failing to first coding data error correction decoding or decoding data type field not successfully or successfully solve
Whether code goes out data type field but the non-default type of data type field, then judge successfully to be obtained in first coding data the
One frame synchronization data；
If successfully obtaining the first frame synchronization data in first coding data, the first frame synchronization data are stored；
The second frame synchronization data are determined in memory space；
Based on the first frame synchronization data and the second frame synchronization data, the bit error rate of the channel to be measured is calculated.
6. method as claimed in claim 5, it is characterised in that also include：
If failed in first coding data obtain the first frame synchronization data, the bit error rate for setting channel to be measured is predetermined word
Symbol.
7. the method as described in claim any one of 1-6, it is characterised in that also include：
Calculate multiple bit error rates of channel to be measured；
Multiple bit error rates based on channel to be measured, determine the average error rate of channel to be measured.
8. method as claimed in claim 7, it is characterised in that the multiple bit error rates based on channel to be measured, determines to be measured
The average error rate of channel, including：
Judge multiple bit error rates of channel to be measured whether comprising preset characters；
If multiple bit error rates of channel to be measured do not include preset characters, by the average value of multiple bit error rates of channel to be measured, really
It is set to the average error rate of channel to be measured.
9. method as claimed in claim 8, it is characterised in that also include：
If multiple bit error rates of channel to be measured include preset characters, judge whether to include in multiple bit error rates more than half pre-
If character；
If including preset characters more than half in multiple bit error rates, the bit error rate for setting channel to be measured is default value.
10. method as claimed in claim 9, it is characterised in that also include：
If not including preset characters more than half in multiple bit error rates, judge in multiple bit error rates whether comprising 1/4 with
On preset characters；
If each preset characters is entered as 5% comprising more than 1/4 preset characters in multiple bit error rates, and it is non-with other
The error rate calculation average value of preset characters, the average value is defined as the average error rate of channel to be measured；
If after each preset characters is excluded, calculating other non-pre- not comprising more than 1/4 preset characters in multiple bit error rates
If the average value of the bit error rate of character, the average value is defined as the average error rate of channel to be measured.
A kind of 11. digital communication systems, it is characterised in that including：
Method, apparatus are sent, for the first coding data sent by channel to be measured；Wherein, first coding data is by information source data
By being obtained after channel coding；
Receiver equipment, for receiving and stores the first coding data, and error correction decoding is carried out to the first coding data
Operation；After to the success of first coding data error correction decoding, the information source data to being obtained after error correction decoding carry out phase-reversal coding, obtain
Obtain the second coded data；Based on the first coding data and second coded data, the error code of the channel to be measured is calculated
Rate.
A kind of 12. computational methods of the bit error rate, it is characterised in that including：
Receive and send the first coding data that method, apparatus are sent by channel to be measured；Wherein, first coding data is by information source data
By being obtained after channel coding；
The operation of getting frame synchrodata is performed in the first coding data；
If success obtains the first frame synchronization data in first coding data, the first frame synchronization data are stored；
The second frame synchronization data are determined in memory space；
Based on the first frame synchronization data and the second frame synchronization data, the bit error rate of channel to be measured is calculated.
13. methods as claimed in claim 12, it is characterised in that also include：
If obtaining the first frame synchronization data in first coding data not successfully, the bit error rate for setting channel to be measured is predetermined word
Symbol.
A kind of 14. digital communication systems, it is characterised in that including：
Method, apparatus are sent, for the first coding data sent by channel to be measured；Wherein, first coding data is by information source data
By being obtained after channel coding；
Receiver equipment, the first coding data that method, apparatus are sent by channel to be measured is sent for receiving, and is compiled described first
The operation of getting frame synchrodata is performed in code data；If success obtains the first frame synchronization data in first coding data,
Store the first frame synchronization data；The second frame synchronization data are determined in memory space；Based on the first frame synchronization number
According to the second frame synchronization data, calculate the bit error rate of channel to be measured.
A kind of 15. computational methods of the bit error rate, it is characterised in that including：
Receive and send the first coding data that method, apparatus are sent by channel to be measured；Wherein, first coding data is by information source data
By being obtained after channel coding；
During carrying out error correction decoding to the first coding data, can judgement decode data type field；
If it is preset kind that data type field and data type field is successfully decoded out, the is obtained from first coding data
One data symbols；
It is determined that data content corresponding with the preset kind, and phase-reversal coding is carried out to the data content, obtain second and count
According to code element；
Based on first data symbols and second data symbols, the bit error rate of channel to be measured is calculated.
16. methods as claimed in claim 15, it is characterised in that also include：
If decoding data type field not successfully, or, the non-default type of data type field, then it is predetermined word to set the bit error rate
Symbol.
A kind of 17. digital communication systems, it is characterised in that including：
Method, apparatus are sent, for the first coding data sent by channel to be measured；Wherein, first coding data is by information source data
By being obtained after channel coding；
Receiver equipment, the first coding data that method, apparatus are sent by channel to be measured is sent for receiving, and is compiled to described first
During code data carry out error correction decoding, can judgement decode data type field；If data class type-word is successfully decoded out
Section and data type field be preset kind, then the first data symbols are obtained from first coding data；It is determined that default with described
The corresponding data content of type, and phase-reversal coding is carried out to the data content, obtain the second data symbols；Based on described first
Data symbols and second data symbols, calculate the bit error rate of channel to be measured.
A kind of 18. receiver equipments, it is characterised in that including：
First communication module, the first coding data that method, apparatus are sent by channel to be measured is sent for receiving；Wherein, first compile
Code data are by information source data by being obtained after channel coding；
Memory, the first coding data that method, apparatus are sent by channel to be measured is sent for storing；
First processor, for carrying out error-correction decoding operation to the first coding data, to first coding data error correction solution
After code success, the information source data to being obtained after error correction decoding carry out phase-reversal coding, the second coded data are obtained, based on described first
Coded data and second coded data, calculate the bit error rate of the channel to be measured.
A kind of 19. receiver equipments, it is characterised in that including：
Second communication module, the first coding data that method, apparatus are sent by channel to be measured is sent for receiving；Wherein, first compile
Code data are by information source data by being obtained after channel coding；
Second processing device, the operation for performing getting frame synchrodata in the first coding data, if success is first
The first frame synchronization data are obtained in coded data, then stores the first frame synchronization data, second is determined in memory space
Frame synchronization data；Based on the first frame synchronization data and the second frame synchronization data, the bit error rate of channel to be measured is calculated.
A kind of 20. receiver equipments, it is characterised in that including：
Third communication module, the first coding data that method, apparatus are sent by channel to be measured is sent for receiving；Wherein, first compile
Code data are by information source data by being obtained after channel coding；
3rd processor, during carrying out error correction decoding to the first coding data, can judgement decode data
Type field, if it is preset kind that data type field and data type field is successfully decoded out, from first coding data
The first data symbols are obtained, it is determined that data content corresponding with the preset kind, and the data content is reversely compiled
Code, obtains the second data symbols, based on first data symbols and second data symbols, calculates the error code of channel to be measured
Rate.
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