CN110336711A - A kind of the check and evaluation method and its realization device of carrier communication signal quality - Google Patents
A kind of the check and evaluation method and its realization device of carrier communication signal quality Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
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Abstract
Present invention discloses a kind of check and evaluation method of carrier communication signal quality and its realization devices, and including receiving input signal using the antenna of RF receiving and transmission module, and modulus format is converted into serial data；RF receiving and transmission module and host computer are docked respectively using FPGA development board, and based on FPGA development board by transmission signal kinds difference, anti-interference, modulation are carried out to input signal, diversity and Space Time Coding is sent, inverse Fourier's series, detection offset estimation, Fourier's series, Phase Tracking, receives diversity and Space Time Coding, demodulation reduction, screening, conversion, entrance estimation, the modular software determined are simulated；It solves adjusting data and inputs host computer, calculate the bit error rate and feed back check and evaluation result.Using monitoring and evaluation solution of the invention; instead of the hardware device of traditional scheme; to significantly optimize cost, be conducive to the upgrading and maintenance of finished product function and check and evaluation range, be also beneficial to freely put into the signal detection for carrying out scale under various application scenarios.
Description
Technical field
The present invention relates to the methods and realization device of a kind of communication signal check and evaluation, more particularly to one kind to be based on simply opening
The method and realization device of transmitting apparatus and software simulated implementation carrier communication signal quality check and evaluation, belong to wireless communication technique
Field.
Background technique
With the communication technology continuous development and make rapid progress, current nationality operated in by floating space tens of thousands of satellites,
Communication base station and density all over the place more extensively connects the router set.The application of wirelessly transmitting data is dissolved into extensively
Among people's lives, from home PC, tablet computer, smart phone, bluetooth digital equipment, so that more incorporating family life
Intelligent appliance etc..
Although the frequency bandwidth of carrier communication is quite high, the short range wireless transmission technology of current main-stream application is to be based on
All kinds of Wifi and bluetooth of 2.4GHz technology are proposed as representative art but are also not limited to this.2.4GHz technology has double
The advantages that propagation, strong interference immunity, long transmission distance (short distance wireless technical range), little power consumption.
Bluetooth is a kind of wireless transmission protocol based on 2.4GHz technology, is different from other since the agreement of use is different
2.4GHz technology and be referred to as Bluetooth technology.
The difference of bluetooth and Wifi: the two belongs to cordless communication network standard.Their identical point is all to work
ISM2.4GHz common frequency band.Except that bluetooth uses FHSS(frequency-hopping spectrum-expanding) mode, general jump each second
1600 times, the frequency band of 83.5MHz is divided into 79 band channels, each moment only accounts for the bandwidth of 1MHz.Communication distance is general
It is 10 meters, can achieve 50 meters releasing newest version Bluetooth4.0 transmission range.
IEEE802.11b LAN protocol when agreement used in Wifi, 100 meters of its transmission range, speed maximum can
To reach 11Mbps, the straight sequence spread spectrum of DSSS(is used) and QPSK or BPSK(phase-shift keying (PSK)), bandwidth is 22MHz.Bluetooth
Belong to WPAN WLAN, i.e. point-to-point transmission mode；And Wifi belongs to WLAN WLAN, multiple terminal simultaneous transmissions
Network mode.
Under the application scenarios of opposite wide area, the smart machine (hereinafter referred to as terminal) of all kinds of participation wireless signal transmission is equal
It is integrated with microcontroller either large or smallly, and is further integrated with the radio frequency receipts for meeting corresponding wireless communication standard in microcontroller
Send out module and its antenna.As a result, when a terminal enters a new application scenarios, wireless signal transmission will occur, connect
Function Access Gateway forms with other terminals and direct-connected or controlled interacts communication；Conversely, terminal itself will in face of from gateway,
The various input signals of each Terminal Type.
In order to promote the stability of wireless signal transmission under application scenarios, either terminal itself or gateway,
It is required to before putting into application to the chip and RF receiving and transmission module transceiver module, antenna in its microcontroller for leading communication
Deng the testing and evaluation in terms of progress radio signal quality.The prior art to this also in the relatively weak stage, although existing
The solution of many maturations is disclosed, but is limited to form on hardware and the single limitation on Functional Design, existing detection
Assess finished product mostly device complicated composition, complete machine accounts for larger and generally directed to more single kind of communication protocol, frequency range
Also relative narrower.It can be seen that such off-the-shelf hardware is limited using environment, it is unsuitable for carrying out under practical application scene portable
Formula check and evaluation communication signal quality.
Summary of the invention
The purpose of the present invention is directed to the check and evaluation method and its realization device of a kind of carrier communication signal quality, solution
The certainly scene adaptability and cost optimization problem of signal quality check and evaluation.
The present invention realizes that the technical solution of said one purpose is a kind of check and evaluation of carrier communication signal quality
Method, for the assessment towards 6Ghz or less radio wave frequency ranges carrier communication signal, characterized by comprising:
Step S1, input signal is received using the antenna of RF receiving and transmission module, and modulus format is converted into serial data；
Step S2, RF receiving and transmission module and host computer are docked respectively using FPGA development board, and based on FPGA development board by transmission
Signal kinds difference carries out anti-interference, modulation to input signal, sends diversity and Space Time Coding, inverse Fourier's series, detection frequency deviation
Estimation, Phase Tracking, receives diversity and Space Time Coding, demodulation reduction, screening, conversion, entrance estimation, determines Fourier's series
Modular software simulation；
Step S3, the solution adjusting data by modular software simulation inputs host computer, calculates the bit error rate and feeds back check and evaluation result.
The check and evaluation method of above-mentioned carrier communication signal quality, further, the carrier communication signal are work frequency
The 2.4GWiFi signal of section 2.4GHz ~ 2.4835GHz, corresponding FPGA development board carry out input signal to include anti-in order
It disturbs, modulate, sending diversity and Space Time Coding, inverse Fourier's series, detection offset estimation, Fourier's series, Phase Tracking, reception
The software simulation for sending diversity and Space Time Coding, demodulation reduction is obtained for host computer according to the original signal analysis bit error rate
Data.
The check and evaluation method of above-mentioned carrier communication signal quality, further, software simulation the anti-interference be to
Input signal actively applies, at least selects a kind of data prediction step of mode, including applies scrambling code into serial data and homogenize
0-1 distribution, to serial data convolutional encoding, to serial data interweaving encoding；Include selected side in corresponding scrambling code in the demodulation reduction
The decoding processing of formula and corresponding algorithm.
The check and evaluation method of above-mentioned carrier communication signal quality, further, the modulation system of software simulation
At least angle modulated or carrier modulation, the demodulation mode are corresponding with modulation system matching.
The check and evaluation method of above-mentioned carrier communication signal quality, further, the inverse Fourier of software simulation
It further include being inserted into pilot tone for finding the simulation of signal start bit, and against Fourier's series and detect between offset estimation before variation
It further include increasing leading training symbol for the simulation increase cyclic prefix of time, Frequency Synchronization, simulation.
The check and evaluation method of above-mentioned carrier communication signal quality, further, the Fourier of software simulation become
It further include that simulation separates leading training symbol, pilot tone and data symbol, and the mould for signal transmission fault model analysis after change
Quasi- signal estimation.
The check and evaluation method of above-mentioned carrier communication signal quality, further, the carrier communication signal are work frequency
Section 2.4GHz ~ 2.4GHz+1MHz Bluetooth signal, corresponding FPGA development board input signal is carried out in order include screen,
Conversion entrance estimation, determines, the software simulation of demodulation reduction, obtains for host computer according to the original signal analysis bit error rate
Data.
The check and evaluation method of above-mentioned carrier communication signal quality, further, software simulation the screening be to
Input signal at least selects a kind of data prediction step of mode, including screens to serial data antialiasing, to serial data difference
Combined screening screens serial data low pass.
The check and evaluation method of above-mentioned carrier communication signal quality, further, the entrance estimation of software simulation
Afterwards, the signal data that corresponding Bluetooth matching relationship determines further includes that maximum value, simulation 1MHz clock generator are looked in simulation, is sentencing
Enter demodulation reduction after fixed；The uncertain signal data of corresponding Bluetooth matching relationship further includes simulation Acton() after respectively simulation take out
Sample or simulation extension, amplification, Gauss screens and directly demodulation reduction；Wherein simulated sampling rear portion sampled signal is directly connected
Determine, another part sampled signal simulation ISI period is compensated, demodulates reduction after Gauss screening.
The present invention realizes that the technical solution of another above-mentioned purpose is, a kind of detection of carrier communication signal quality is commented
Estimate device, characterized by comprising: one is converted into the RF receiving and transmission module of serial data, and radio-frequency receiving-transmitting mould for modulus format
Block has the antenna for receiving input signal；One for receiving solution adjusting data, calculating the bit error rate and feed back check and evaluation knot
The host computer of fruit, the host computer are PC, tablet computer, smart phone or the microprocessor with display screen；And one piece with
In by the difference of transmission signal kinds to input signal carry out anti-interference, modulation, send diversity and Space Time Coding, inverse Fourier's series,
Detection offset estimation, Fourier's series, Phase Tracking, reception diversity and Space Time Coding, demodulation reduction, screening, conversion, entrance are estimated
The FPGA development board that meter, the modular software determined are simulated, and FPGA development board docks RF receiving and transmission module and host computer respectively.
Using the monitoring and assessing method and its realization device of carrier communication signal quality of the present invention, has substance outstanding
Feature and significant progress: the present invention carries out hardware by using FPGA development board combination software analog carrier signal of communication and connects
The overall process received and handled, the bulky and complicated hardware device instead of traditional detection evaluation scheme, thus substantially
Degree optimizes cost, is conducive to the upgrading and maintenance of finished product function and check and evaluation range, is also beneficial to freely put into various answer
With the signal detection for carrying out scale under scene.
Detailed description of the invention
Fig. 1 is the software modeling process chart for carrying out check and evaluation in FPGA development board of the present invention for 2.4GWiFi signal.
Fig. 2 is the software modeling process chart for carrying out check and evaluation in FPGA development board of the present invention for Bluetooth signal.
Fig. 3 is the structural schematic diagram of carrier communication signal quality check and evaluation device of the present invention.
Specific embodiment
Just attached drawing in conjunction with the embodiments below, the embodiment of the present invention is described in further detail, so that of the invention
Technical solution is more readily understood, grasps, to make relatively sharp define to protection scope of the present invention.
The radiofrequency signal quality testing that designer of the present invention sends Terminal Type each in application scenarios for the prior art with
Evaluation measures are weak, and, and many deficiencies such as detection function single limited using environment of detection device finished product rely upon long-term
Research experience, innovation propose the check and evaluation method and its realization device of a kind of carrier communication signal quality, are widely used in
The application field of wireless communication technique, for the assessment towards 6Ghz or less radio wave frequency ranges carrier communication signal.The detection
Appraisal procedure and its device are able to achieve low cost and rapidly make accurately under application scenarios to all kinds of carrier communication signals
Quality evaluation, to provide reliable reference frame to improve the hardware configuration of terminal, setting or network access mode adjustment.
From the point of view of technological overview, the check and evaluation method of the carrier communication signal quality, mainly by three aspect key steps
It constitutes.Wherein step S1, the antenna reception input signal using RF receiving and transmission module, and modulus format is converted into serial data；Step
Rapid S2, RF receiving and transmission module and host computer are docked respectively using FPGA development board, and based on FPGA development board by transmission signal kind
Class difference, to input signal carry out anti-interference, modulation, send diversity and Space Time Coding, inverse Fourier's series, detection offset estimation,
Fourier's series, Phase Tracking receive diversity and Space Time Coding, demodulation reduction, screening, conversion, module entrance estimation, determined
Change software simulation；Step S3, the solution adjusting data by modular software simulation inputs host computer, calculates the bit error rate and feeds back detection and comments
Estimate result.It can be seen that the method innovation of the application is intended to by being used to count after software stimulated replacement conventional receiver input signal
According to all kinds of many and diverse devices of processing, structure of optimizing hardware, to carry out assessment error rate calculation in host computer.Therefore as requirement
The key problem in technology of protection, the FPGA development board utilized in step S2 are existing mature circuit board piece, the Zynq- with XILINX
7020, the specifications and models of Zynq-7045 plurality of optional.And software simulation is carried out based on the FPGA development board, ARM core can be embedded
Linux operating system and limit filtration algorithm, middle position value filtering algorithm, digital averaging filtering algorithm, recurrence average filtering calculation
Many existing ripe algorithms such as method, chebyshev algorithm, window function algorithm to the treatment by stages of input signal, by one kind with
The modularization of upper algorithm integration realization different disposal.
There are many wireless transmission signal type based on carrier communication, to more clearly demonstrate the check and evaluation method of the invention
Specific implementation, below only with wherein 2.4GWiFi signal and Bluetooth signal do embodiment process be described in detail.
The carrier communication signal is the 2.4GWiFi signal of working frequency range 2.4GHz ~ 2.4835GHz, and as shown in Figure 1 is soft
Part modeling process chart.When corresponding FPGA development board carries out input signal to include anti-interference, modulation, send diversity and sky in order
Coding, insertion pilot tone, inverse Fourier's series, increase cyclic prefix, simulation increase leading training symbol, interblock interference, frequency deviation and estimate
Meter, signal estimation, Phase Tracking, receives the software simulation for sending diversity and Space Time Coding, demodulation reduction at Fourier's series, obtains
To the data for host computer according to the original signal analysis bit error rate.Wherein against further separating leading training after Fourier's series
Symbol, pilot tone and data symbol.
Details, active application is carried out firstly the need of to it for input signal (i.e. a string character strings constituted by 01)
Anti-interference processing is simulated, referring to conventional check and evaluation device, analog adder algorithm applies scrambling code to the character string, with homogenization
The wherein distribution situation of 0-1 avoids a wide range of 0 and a wide range of 1 jump from interfering.Also the property of can choose is based on character string
The convolutional encoding or interweaving encoding of Viterbi algorithm or bcjr algorithm.
The software design of interleaving coder, gsm communication system must satisfy the requirement of real-time, and therefore, interweaving encoding draws
The delay entered is answered as small as possible.In order to meet simultaneously, intertexture in block carries out (57,8) matrix transposed transform and delay is as small as possible
It is required that the interleaver is realized using 2 dual port RAMs, it is denoted as RAM_ and RAM_B.It, will from 0~455 by address when interleaving treatment
RAM_A is all written in 456b input data, and after 456b data are all sent into RAM_A, control signal turns RAM_A by write state
Read states are changed to, meanwhile, RAM_B is written into interleaving data in input, RAM_B is write state, and interleaver exports number by RAM_A
According to.After 456 clock cycle, while reading 456b data from RAM_A, 456 b numbers of a time slot are written in RAM_B
According to.At this point, changing the read-write state of RAM_A and RAM_B, RAM_A starts to write, and data are read from RAM_B.It completes repeatedly
The real-time continuous interleaving treatment of data.
To reduce FPGA operand, the transposition operation of read/write address matrix is realized using Matlab, C language etc., is utilized
VHDL language describes interleaving coder.
After completing to improve input signal interference free performance, the software that it is modulated can be simulated, such as with
The angular phase modulation of representative QM 256, QM64.Accordingly by the design of Vivado software System generator
Process generates corresponding modulation waveform.
The simulation process of above-mentioned anti-interference and modulation is required to match corresponding inverse before being finally transmitted to host computer
Process separates scrambling code, deconvolution using corresponding mode or releases intertexture, the mode of software simulation is same as above.
Software is simulated for example, and the power function of one is as follows:
。
This section of code is realized with Matlab language, specifically in the Verilog burning of xilinx development board FPGA,
Operation efficiency has been turned up significantly in this way.Its main purpose calculates signal and estimates environment in space propagation to signal
Interference effect estimates the fault model of signal；Wherein Input is input signal, and Output is output signal.
The carrier communication signal is the Bluetooth signal of working frequency range 2.4GHz ~ 2.4GHz+1MHz, software as shown in Figure 2
Modeling process chart.It includes screening that corresponding FPGA development board carries out input signal in order, conversion, entrance estimation, is determined, solution
The software simulation for adjusting reduction obtains the data for host computer according to the original signal analysis bit error rate.
From diagram as it can be seen that the screening that software is simulated is at least to select a kind of data prediction of mode to walk to input signal
Suddenly, including to serial data antialiasing screen, to serial data difference combined screening, serial data low pass is screened.
And after software simulation entrance estimation, the signal data that corresponding Bluetooth matching relationship determines further includes that maximum is looked in simulation
Value, simulation 1MHz clock generator, enter demodulation reduction after judgement；The uncertain signal data of corresponding Bluetooth matching relationship, also
Including simulating Acton() simulated sampling or simulation extension, amplification, Gauss screening and directly demodulation reduction are distinguished afterwards；Wherein simulate
Sampling rear portion sampled signal is directly connected judgement, and another part sampled signal simulation ISI period is compensated, after Gauss screening
Demodulation reduction.
Bluetooth signal uses 2FSK modulation system, and BT is 0.5, and on 157KHz, data symbol rate is frequency departure
1Mbits/s.One group of signal is generated with the function of the FSK of Matlab in practical implementations, is generating orthogonal signalling with IQ mode
It is sent in AD9361 in the carrier wave of 2.4G, for the errorless transmission of signal, uses Gaussian filter in the truing phase of signal
Filtering.It is mixed when receiving with the receiving end of AD9361, the I/Q signal that reductor is sent.
Specific implementation uses the vivado Software Create Bluetooth signal module burning of xilinx in FPGA, received letter
Number it is decoded analysis in the Linux system of the built-in ARM of the FPGA of xilinx, to analyze the bit error rate and signal of data
The parameters such as intensity.
The synchronization of signal judges the initial position of signal using the method for symbol synchronization.
As it can be seen that the check and evaluation device of the carrier communication signal quality, hardware on the basis of above-mentioned two embodiment
Composition is greatly optimized and device overall volume is also reduced significantly.For constituting from basis, main includes one for modulus
Format is converted into the RF receiving and transmission module of serial data, and RF receiving and transmission module has the antenna for receiving input signal；One
Host computer for receiving solution adjusting data, calculating the bit error rate and feed back check and evaluation result, the host computer is PC, plate is electric
Brain, smart phone or the microprocessor with display screen；And one piece for by transmission signal kinds difference to input signal into
Row anti-interference, modulation, send diversity and Space Time Coding, inverse Fourier's series, detection offset estimation, Fourier's series, Phase Tracking,
The FPGA exploitation that the modular software that reception diversity and Space Time Coding, demodulation are restored, screening, converted, entrance is estimated, are determined is simulated
Plate, and FPGA development board docks RF receiving and transmission module and host computer respectively.It, should on the basis of being dedicated to the portability of host computer
The overall volume of check and evaluation device is suitable for single carrying, meets the survey that wireless carrier communication signal is carried out under any scene
It comments.
To sum up the monitoring and evaluation scheme introduction about carrier communication signal quality of the present invention and embodiment are described in detail as it can be seen that should
Scheme has substantive distinguishing features outstanding and significant progress: communicating by using FPGA development board combination software analog carrier
Signal carries out the overall process of hardware acceptance and processing, the bulky and complicated hardware instead of traditional detection evaluation scheme
Device is conducive to the upgrading and maintenance of finished product function and check and evaluation range to significantly optimize cost, is also beneficial to certainly
The signal detection of scale is carried out by putting under various application scenarios.
In addition to the implementation, the present invention can also have other embodiment, all to use equivalent substitution or equivalent transformation shape
At technical solution, be all fallen within scope of the present invention.
Claims (10)
1. a kind of check and evaluation method of carrier communication signal quality, for towards 6Ghz or less radio wave frequency ranges carrier communication
The assessment of signal, characterized by comprising:
Step S1, input signal is received using the antenna of RF receiving and transmission module, and modulus format is converted into serial data；
Step S2, RF receiving and transmission module and host computer are docked respectively using FPGA development board, and based on FPGA development board by transmission
Signal kinds difference carries out anti-interference, modulation to input signal, sends diversity and Space Time Coding, inverse Fourier's series, detection frequency deviation
Estimation, Phase Tracking, receives diversity and Space Time Coding, demodulation reduction, screening, conversion, entrance estimation, determines Fourier's series
Modular software simulation；
Step S3, the solution adjusting data by modular software simulation inputs host computer, calculates the bit error rate and feeds back check and evaluation result.
2. the check and evaluation method of carrier communication signal quality according to claim 1, it is characterised in that: the carrier communication
Signal be working frequency range 2.4GHz ~ 2.4835GHz 2.4GWiFi signal, corresponding FPGA development board to input signal in order
It carries out including anti-interference, modulation, transmission diversity and Space Time Coding, inverse Fourier's series, detection offset estimation, Fourier's series, phase
Position tracking receives the software simulation for sending diversity and Space Time Coding, demodulation reduction, obtains for host computer according to original signal point
Analyse the data of the bit error rate.
3. the check and evaluation method of carrier communication signal quality according to claim 2, it is characterised in that: the institute of software simulation
Stating anti-interference is actively to apply to input signal, at least select a kind of data prediction step of mode, including applying into serial data
Scrambled code homogenizes 0-1 distribution, to serial data convolutional encoding, to serial data interweaving encoding；It is disturbed in the demodulation reduction comprising correspondence
The decoding processing of chosen manner and corresponding algorithm in code.
4. the check and evaluation method of carrier communication signal quality according to claim 2, it is characterised in that: the institute of software simulation
It states modulation system and is at least angle modulated or carrier modulation, the demodulation mode is corresponding with modulation system matching.
5. the check and evaluation method of carrier communication signal quality according to claim 2, it is characterised in that: the institute of software simulation
It further include being inserted into pilot tone for finding the simulation of signal start bit, and inverse Fourier's series and detection are frequently before stating against Fourier's series
It partially further include increasing leading training symbol for the simulation increase cyclic prefix of time, Frequency Synchronization, simulation between estimation.
6. the check and evaluation method of carrier communication signal quality according to claim 2, it is characterised in that: the institute of software simulation
State after Fourier's series further includes that simulation separates leading training symbol, pilot tone and data symbol, and is used for signal transmission fault mould
The analog signal of type analysis is estimated.
7. the check and evaluation method of carrier communication signal quality according to claim 1, it is characterised in that: the carrier communication
Signal be working frequency range 2.4GHz ~ 2.4GHz+1MHz Bluetooth signal, corresponding FPGA development board to input signal in order into
Row includes screening, conversion, entrance estimation, determines, the software simulation of demodulation reduction, is obtained for host computer according to original signal point
Analyse the data of the bit error rate.
8. the check and evaluation method of carrier communication signal quality according to claim 7, it is characterised in that: the institute of software simulation
Stating screening is a kind of data prediction step of mode at least to be selected to input signal, including screen to serial data antialiasing, right
Serial data difference combined screening screens serial data low pass.
9. the check and evaluation method of carrier communication signal quality according to claim 7, it is characterised in that: the institute of software simulation
After stating entrance estimation, the signal data that corresponding Bluetooth matching relationship determines further includes that maximum value, simulation 1MHz clock hair are looked in simulation
Raw device enters demodulation reduction after judgement；The uncertain signal data of corresponding Bluetooth matching relationship further includes simulation Acton() after
Simulated sampling or simulation extension, amplification, Gauss screening and directly demodulation reduction respectively；Wherein simulated sampling rear portion sampling letter
Number directly linking determines, another part sampled signal simulation ISI period compensate, demodulation restores after Gauss screening.
10. a kind of check and evaluation device of carrier communication signal quality, characterized by comprising:
One is converted into the RF receiving and transmission module of serial data for modulus format, and RF receiving and transmission module has for receiving input
The antenna of signal；
One for receiving solution adjusting data, the host computer that calculates the bit error rate and feed back check and evaluation result, the host computer be PC,
Tablet computer, smart phone or the microprocessor with display screen；And
One piece for carrying out anti-interference, modulation to input signal by the difference of transmission signal kinds, sending diversity and Space Time Coding, inverse Fu
Vertical Ye Bianhua, detection offset estimation, Fourier's series, Phase Tracking, diversity and Space Time Coding is received, demodulation reduction, screening, is turned
It changes, the FPGA development board of entrance estimation, the modular software simulation determined, and FPGA development board docks RF receiving and transmission module respectively
And host computer.
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