WO2015074230A1 - 一种自干扰信道估计方法及装置 - Google Patents
一种自干扰信道估计方法及装置 Download PDFInfo
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- WO2015074230A1 WO2015074230A1 PCT/CN2013/087635 CN2013087635W WO2015074230A1 WO 2015074230 A1 WO2015074230 A1 WO 2015074230A1 CN 2013087635 W CN2013087635 W CN 2013087635W WO 2015074230 A1 WO2015074230 A1 WO 2015074230A1
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- interference channel
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004891 communication Methods 0.000 claims abstract description 54
- 238000012545 processing Methods 0.000 claims description 2
- 230000011664 signaling Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
Definitions
- the present invention relates to the field of communications, and in particular, to a self-interference channel estimation method and apparatus. Background technique
- the duplex mode is one of the basic concepts of communication, including half-duplex and full-duplex. Assume that the main body of the communication is two machines. If the machine A can only transmit signals to the letter B, the letter B can only receive the transmission signal of the letter A, which is called simplex communication; if it is on a certain time-frequency resource The letter A transmits a signal to the letter B, and the letter B receives the signal of the letter A. On different time-frequency resources, the letter B transmits a signal to the letter A, and the letter A receives the signal of the letter B, which is called a half.
- Duplex communication if on the same time-frequency resource, the signal A transmits a signal to the signal B, and also receives the signal transmitted by the signal B, the signal B transmits a signal to the letter A, and also receives the signal transmitted by the letter A. , called full-duplex communication.
- the interference of the transmitted signal of the communication signal itself to the useful received signal is referred to as self-interference.
- the channel response from the interfering channel needs to be estimated to reduce the effect of self-interference on the communication signal.
- the channel response estimation scheme of the self-interference channel reduces the throughput of the system.
- Embodiments of the present invention provide a self-interference channel estimation method and apparatus. It can solve the problem of system throughput reduction when self-interference channel estimation.
- a self-interference channel estimation apparatus includes:
- a sending unit configured to send an estimated signal to the receiving device, where the estimated signal is a signal unknown to the receiving device
- a receiving unit configured to receive an estimated signal sent by the sending unit
- an estimating unit configured to perform self-interference channel estimation according to the estimated signal received by the receiving unit.
- the sending unit is further configured to send a reference signal to the receiving device, so as to facilitate the connection
- the receiving device performs communication channel estimation according to the reference signal, wherein the reference signal is a signal known by the receiving device.
- the receiving unit is further configured to receive a reference signal sent by the sending unit;
- the estimating unit is further configured to perform self-interference channel estimation according to the estimated signal and the reference signal received by the receiving unit.
- the self-interference channel estimation device is a half-duplex communication signal or a full-duplex communication signal.
- the estimated signal is a data signal or a control signal.
- a self-interference channel estimating apparatus includes: a processor, a memory, a transmitter, a receiver, and a bus, wherein the processor, the memory, the transmitter, and the receiver pass the The buses are connected to each other,
- the transmitter is configured to send an estimated signal to the receiving device, where the estimated signal is a signal unknown to the receiving device;
- the receiver is configured to receive an estimated signal sent by the transmitter
- the processor is configured to perform self-interference channel estimation based on the estimated signal received by the receiver.
- the transmitter is further configured to send a reference signal to the receiving device, so that the receiving device performs communication channel estimation according to the reference signal, wherein the reference signal is a signal known by the receiving device.
- the receiver is further configured to receive a reference signal sent by the transmitter;
- the processor is further configured to: according to the estimated signal and the reference signal received by the receiver Self-interference channel estimation is performed.
- the self-interference channel estimation device is a half-duplex communication signal or a full-duplex communication signal.
- the estimated signal is a data signal or a control signal.
- a self-interference channel estimation method includes:
- the self-interference channel estimating means transmits an estimated signal to the receiving device, the estimated signal being a signal unknown to the receiving device;
- the self-interference channel estimating apparatus receives the estimated signal transmitted by itself;
- the self-interference channel estimating means performs self-interference channel estimation based on the received estimated signal.
- the method further includes: the self-interference channel estimation device transmitting a reference signal to the receiving device, so that the receiving device performs communication according to the reference signal Channel estimation, wherein the reference signal is a signal known to the receiving device.
- the method further includes:
- the self-interference channel estimation apparatus receives the reference signal transmitted by itself;
- the self-interference channel estimating apparatus performs self-interference channel estimation according to the received estimated signal, and includes:
- the self-interference channel estimating apparatus performs self-interference channel estimation based on the received estimated signal and the reference signal.
- the self-interference channel estimation device is a half-duplex communication signal or a full-duplex communication signal.
- the estimated signal is a data signal or a control signal.
- a self-interference channel estimation method and apparatus transmits an estimation signal to a receiving apparatus by a self-interference channel estimation apparatus and receives an estimation signal transmitted by itself, the estimation signal is a signal unknown to the receiving apparatus, and then according to the received estimation.
- the signal is self-interfering channel estimation, which improves the throughput of the system.
- FIG. 1 is a schematic flowchart of a self-interference channel estimation method according to an embodiment of the present invention
- FIG. 2 is a schematic flowchart of a self-interference channel estimation method according to another embodiment of the present invention
- FIG. 3 is a schematic diagram of a time-frequency resource occupation distribution of a self-interference channel estimation provided by the prior art
- FIG. 4 is a schematic diagram of a time-frequency resource occupation distribution of a self-interference channel estimation according to an embodiment of the present invention
- FIG. 5 is a schematic structural diagram of a self-interference channel estimation apparatus according to an embodiment of the present invention
- FIG. 6 is a schematic structural diagram of a self-interference channel estimation apparatus according to another embodiment of the present invention.
- An embodiment of the present invention provides a self-interference channel estimation method.
- the method includes the following steps: 101.
- the self-interference channel estimation apparatus transmits an estimation signal to the receiving apparatus.
- the estimated signal is a signal unknown to the receiving device.
- the unknown signal may be a data signal or a control signal.
- the unknown signal of the receiving device in the present invention is not limited to the two signals.
- the received unknown signal is not only used for self-interference channel estimation, but also transmits data or control signaling, which increases the throughput of the system.
- the reference signal of the estimated communication channel is used for self-interference channel estimation, and the reference signal is a signal known by the receiving device, and is used for estimating the communication channel and the self-interference channel, and the time-frequency resources occupied by the reference signal are not Used to transmit data signals and control signals, reducing system throughput.
- the self-interference channel estimation device may be a full-duplex communication signal or a half-duplex communication machine, and is of course not limited to the two communication signals.
- the self-interference channel estimation apparatus receives an estimation signal sent by itself.
- the self-interference channel estimation apparatus performs self-interference channel estimation according to the received estimation signal.
- the self-interference channel estimation apparatus performs self-interference channel estimation according to the estimated signal, but does not mean that the self-interference channel estimation apparatus uses only the estimated signal for estimation, and may also use other signals for self-interference channel estimation, which is the embodiment. No restrictions are imposed.
- the self-interference channel is used to estimate the reference signal of the communication channel, which is a signal known to both parties, and the known reference signal has no transmission data or control signaling, and is used for estimating the communication channel and the self. Interfering with the channel, this makes the time-frequency resources occupied by the reference signal reduce the throughput of the system to some extent.
- the self-interference channel estimation apparatus performs self-interference channel estimation, it is possible to receive a signal known from the interference channel estimation apparatus itself, and therefore, when transmitting the signal, it is not necessary to transmit both the self-interference channel estimation apparatus and the reception apparatus.
- the reference signal and, regardless of whether the signal transmitted by the self-interference channel estimating device by the receiving device is known, the signal transmitted by the self-interference channel estimating device itself is a known signal, so that the signal unknown to the receiving device is used as the estimated signal.
- Self-interference channel estimation is fully achievable, and since the estimated signal used to estimate the self-interference channel is a control signal or data signal unknown to the receiving device, this improves the time-frequency resource utilization, thereby increasing the throughput of the system.
- a self-interference channel estimation method provided by an embodiment of the present invention transmits an estimation signal to a receiving apparatus by a self-interference channel estimation apparatus and receives an estimation signal transmitted by itself, the estimation signal is a signal unknown to the receiving apparatus, and then performs according to the received estimation signal.
- Self-interference channel estimation improvement The throughput of the system.
- another embodiment of the present invention provides a self-interference channel estimation method, which is a self-interference channel estimation method in practical application described in connection with communication channel estimation.
- FIG. 2 Includes the following steps:
- the self-interference channel estimation apparatus transmits an estimation signal to the receiving apparatus.
- the estimated signal is a signal unknown to the receiving device.
- the signals unknown to the receiving device may be data signals and control signals.
- the self-interference channel estimation device may be a full-duplex communication signal or a half-duplex communication machine, and is of course not limited to the two communication signals.
- the self-interference channel estimation apparatus transmits a reference signal to the receiving apparatus, so that the receiving apparatus performs communication channel estimation according to the reference signal.
- the reference signal is a signal known to the receiving device.
- step 201 and step 202 have no sequential relationship.
- the self-interference channel estimation apparatus receives an estimation signal and a reference signal that are sent by itself. 204. The self-interference channel estimation apparatus performs self-interference channel estimation according to the received estimation signal and the reference signal.
- the channel response of the self-interference channel can be estimated by using a minimum mean square error, a least squares method, and the like in the prior art, and details are not described herein again.
- the reference signal of the estimated communication channel is required to be densely distributed in the time domain and sparsely distributed in the frequency domain, when estimating the self-interference channel, if only the estimated signal is used for estimating the self-interference channel, then the estimated signal occupies the time domain.
- the reference signal cannot be transmitted, which affects the estimation of the communication channel, and because the signal used to estimate the self-interference channel requires a sparse time domain distribution and a dense frequency domain distribution, because of the dense distribution in the frequency domain, When the received signal is used to estimate the self-interfering channel, it is easy to mix the reference signal.
- both the communication channel estimation and the self-interference channel estimation use reference signals, but since the change speed of the communication channel is much larger than the self-interference channel, the communication channel estimation requires the reference signal to be densely distributed in the time domain, and the self-interference channel estimation. In order to reduce the estimation error caused by the frequency domain interpolation, the reference signal frequency domain distribution is required to be dense. Therefore, in the prior art, the reference signal must be both densely distributed in the time domain and the frequency domain, which occupies a large amount of time-frequency resources, and the reference signal is Both sides of communication Known signals, used for channel estimation, no data transmission and control signaling, reduce the throughput of the system, and because of the two estimation methods, the system design is complicated, as shown in Figure 3.
- the axis is time domain distribution, and the vertical axis is frequency domain distribution.
- the time domain from left to right is 1 1 column from the first time domain to the 1st time domain, and the frequency domain is 16 rows from top to bottom.
- 1 frequency domain to the 16th frequency domain the first area is a time-frequency resource occupied by a signal unknown to the receiving device, such as a time-frequency resource occupied by a control signal or a data signal, and the second area is an estimated communication channel and a self-interference channel.
- the time-frequency resource occupied by the reference signal The reference signals in the first time domain and the first time domain are used to estimate the self-interference channel.
- the invention can estimate the self-interference channel by using the signal unknown to the receiving device, that is, the estimated signal, and can improve the utilization of the time-frequency resource, because the estimated signal is a control signal or a data signal unknown to the receiving device, and the estimated signal is not only used to estimate the self-interference.
- the channel also transmits data or control signaling, which improves the throughput of the system, and the reference signal used to estimate the communication channel does not need to take into account the characteristics of the frequency domain distribution that is required to estimate the self-interference channel, which also reduces the Knowing the frequency domain resources occupied by the reference signal, this part of the frequency domain resources can be used to transmit data and control signaling, and also improve the throughput of the system, and at the same time, because the two estimation methods of self-interference channel estimation and communication channel estimation are not required at the same time , also reduces system design complexity. As shown in FIG.
- the first area is a time-frequency resource occupied by a signal unknown to the receiving device
- the second area is a time-frequency resource occupied by the receiving device estimating a known reference signal of the communication channel
- the third area in one time domain is a time-frequency resource occupied by the estimated signal of the self-interference channel, and the third area belongs to a part or all of the first area. In the illustrated embodiment, the third area belongs to a part of the first area.
- the estimated signal is also a signal unknown to the receiving device, such as a data signal or a control signal, in actual case, in the first time domain and the first time domain for self-interference channel estimation, a reference for estimating the communication channel
- the signal can also be used to estimate the self-interference channel, ie both the first time domain and the second and third regions in the 11th time domain can be used to estimate the self-interference channel. Comparing FIG. 3, it can be seen that, since the present embodiment uses a signal unknown to the receiving device, such as a data signal or control signaling, as an estimated signal, the self-interference channel is estimated, and since the reference signal of the embodiment does not need to balance the self-interference channel.
- the signal frequency domain When the signal frequency domain is densely distributed, in the first time domain and the 11th time domain, a part of the second region in FIG. 3 becomes the third region in FIG. 4, that is, the second in FIG. Frequency domain, sixth frequency domain, tenth frequency domain, and second zone in the 14th frequency domain
- the domain becomes the first region in Fig. 4, so the first region and the third region for transmitting signals unknown to the receiving device, such as data and control signaling, are increased.
- the time-frequency resource area that is not used for transmitting data or control signaling is the second area, which improves the utilization of time-frequency resources and improves the throughput of the system.
- FIG. 4 is only a case, and the distribution of the time-frequency resources may have multiple distribution modes according to specific requirements.
- FIG. 3 and FIG. 4 merely reflect the time-frequency of the prior art and the present invention.
- the change of the resource distribution does not mean that the present invention is limited to this type of time-frequency resource distribution.
- a self-interference channel estimation method provided by an embodiment of the present invention transmits an estimation signal to a receiving apparatus by a self-interference channel estimation apparatus and receives an estimation signal transmitted by itself, the estimation signal is a signal unknown to the receiving apparatus, and then performs according to the received estimation signal.
- Self-interference channel estimation improves system throughput.
- the self-interference channel estimation apparatus can receive the reference signal transmitted by itself, and perform self-interference channel estimation according to the received estimation signal and the reference signal, thereby improving the throughput of the system without affecting the estimation of the communication channel, and reducing the throughput. Design complexity.
- An embodiment of the present invention provides a self-interference channel estimating apparatus, which is structured as shown in FIG. 5.
- the self-interference channel estimating apparatus 501 includes: a transmitting unit 501 1 , a receiving unit 5012, and an estimating unit 5013.
- the sending unit 501 1 is configured to send an estimated signal to the receiving device, where the estimated signal is a signal unknown to the receiving device.
- the receiving unit 5012 is configured to receive the estimated signal sent by the sending unit 501 1 .
- the estimating unit 5013 is configured to perform self-interference channel estimation according to the estimated signal received by the receiving unit 5012.
- the self-interference channel estimating apparatus transmits an estimated signal to the receiving apparatus and receives an estimated signal transmitted by itself, the estimated signal is a signal unknown to the receiving apparatus, and then performs self-interference channel estimation according to the received estimated signal, Increased system throughput.
- the sending unit 501 1 is further configured to send a reference signal to the receiving device, so that the receiving device performs communication channel estimation according to the reference signal, where the reference signal is a signal known to the receiving device.
- the receiving unit 5012 is further configured to receive the reference signal sent by the sending unit 5011.
- the estimating unit 5013 is further configured to perform self-interference channel estimation according to the estimated signal and the reference signal received by the receiving unit 5012.
- the self-interference channel estimating apparatus transmits an estimated signal to the receiving apparatus and receives an estimated signal transmitted by itself, the estimated signal is a signal unknown to the receiving apparatus, and then performs self-interference channel estimation according to the received estimated signal, Increased system throughput.
- the apparatus may be embedded or itself a microprocessor computer, such as a general-purpose computer, a custom machine, a mobile terminal, or a tablet.
- the self-interference channel estimating apparatus 6001 includes: at least one processor 6011, a memory 6012, a bus 6013, a transmitter 6014, and a receiver 6015.
- the at least one processor 6011, the memory 6012, the transmitter 6014, and the receiver 6015 Connections to each other are completed via bus 6013.
- the bus 6013 may be an IS A (Industry Standard Architecture) bus, a PCI (Peripheral Component) bus, or an EISA (Extended Industry Standard Architecture) bus.
- the bus 6013 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 6, but it does not mean that there is only one bus or one type of bus. Its towel:
- Memory 6012 is for storing executable program code, the program code including computer operating instructions.
- Memory 6012 may include high speed RAM memory and may also include non-volatile memory, such as at least one disk storage device.
- the processor 601 1 may be a central processing unit (CPU 1301), or an application specific integrated circuit (ASIC), or one configured to implement the embodiment of the present invention. Or multiple integrated circuits.
- CPU 1301 central processing unit
- ASIC application specific integrated circuit
- the transmitter 6014 is configured to send an estimated signal to the receiving device, where the estimated signal is a signal unknown to the receiving device.
- the receiver 6015 is configured to receive the estimated signal sent by the transmitter 6014.
- the processor 601 1 is configured to perform self-interference channel estimation according to the estimated signal received by the receiver 6015.
- a self-interference channel estimating apparatus transmits an estimate to a receiving apparatus
- the signal is received and received by the self-estimated signal, and the estimated signal is a signal unknown to the receiving device, and then the self-interference channel estimation is performed according to the received estimated signal, thereby improving the throughput of the system.
- the transmitter 6014 is further configured to send a reference signal to the receiving device, so that the receiving device performs communication channel estimation according to the reference signal, where the reference signal is a signal known by the receiving device.
- the receiver 6015 is further configured to receive a reference signal sent by the transmitter 6014.
- the processor 601 1 is further configured to perform self-interference channel estimation according to the estimated signal and the reference signal received by the receiver 6015.
- the self-interference channel estimating apparatus transmits an estimated signal to the receiving apparatus and receives an estimated signal transmitted by itself, the estimated signal is a signal unknown to the receiving apparatus, and then performs self-interference channel estimation according to the received estimated signal, Increased system throughput.
- Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
- a storage medium may be any available media that can be accessed by a computer.
- the computer readable medium may include RAM (Random Access Memory), ROM (Read Only Memory), and EEPROM (Electrically Erasable Programmable Read Only Memory).
- CD-ROM Compact Disc Read Only Memory
- CD-ROM Compact Disc Read Only Memory
- disk storage media or other magnetic storage device, or can be used to carry or store desired programs in the form of instructions or data structures.
- Any connection may suitably be a computer readable medium.
- coaxial cable, fiber optic cable, twisted pair, DSL (Digital Subscriber Line), or wireless technologies such as infrared, radio, and microwave coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, wireless and microwave are included in the fixing of the associated medium.
- the disc and the disc include a CD (Compact Disc), a laser disc, a disc, a DVD disc (Digital Versatile Disc), a floppy disk, and a Blu-ray disc, wherein the disc is usually magnetically copied,
- the disc uses a laser to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.
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Abstract
本发明公开了一种自干扰信道估计方法及装置，涉及通信领域，能够解决自干扰信道估计减小系统数据吞吐量的问题。具体方案为：自干扰信道估计装置向接收装置发送估计信号并接收自身发送的估计信号，然后根据接收的估计信号进行自干扰信道估计。本发明用于自干扰信道估计。
Description
一种自干扰信道估计方法及装置
技术领域
本发明涉及通信领域， 尤其涉及一种自干扰信道估计方法及装置。 背景技术
双工方式是通信的基本概念之一， 包括半双工和全双工两种。 假设通 信的主体为两个信机， 如果信机 A只能发射信号给信机 B , 信机 B只能接 收信机 A的发射信号， 称为单工通信； 如果在一定的时频资源上信机 A向 信机 B发射信号， 信机 B接收信机 A的信号， 在不同的时频资源上信机 B 向信机 A发射信号， 信机 A接收信机 B的信号， 称为半双工通信； 如果 在相同的时频资源上， 信机 A向信机 B发射信号， 也接收信机 B发射的信 号， 信机 B向信机 A发射信号， 也接收信机 A发射的信号， 称为全双工 通信。
在双工技术中，通信信机自身的发射信号对有用的接收信号的干扰称 为自干扰。 需要估计出自干扰信道的信道响应来减少自干扰对通信信号的 影响。
但是， 现有技术中， 自干扰信道的信道响应估计方案减少了系统的吞 吐量。
发明内容
本发明的实施例提供一种自干扰信道估计方法及装置。 能够解决自干 扰信道估计时， 系统吞吐量减少的问题。
为达到上述目的， 本发明的实施例釆用如下技术方案：
第一方面， 一种自干扰信道估计装置， 包括：
发送单元， 用于向接收装置发送估计信号， 所述估计信号为所述接收 装置未知的信号；
接收单元， 用于接收所述发送单元发送的估计信号；
估计单元，用于根据所述接收单元接收的估计信号进行自干扰信道估 计。
结合第一方面， 在第一种可能的实现方式中，
所述发送单元， 还用于向所述接收装置发送参考信号， 以便于所述接
收装置根据所述参考信号进行通信信道估计， 其中， 所述参考信号为所述 接收装置已知的信号。
结合第一方面的第一种可能的实现方式， 在第二种可能的实现方式 中，
所述接收单元， 还用于接收所述发送单元发送的参考信号；
所述估计单元，还用于根据所述接收单元接收的估计信号及参考信号 进行自干扰信道估计。
结合第一方面至第一方面的第二种可能的实现方式中任一实现方式， 在第三种可能的实现方式中，
所述自干扰信道估计装置为半双工通信信机或全双工通信信机。
结合第一方面至第一方面的第三种可能的实现方式中任一实现方式， 在第四种可能的实现方式中，
所述估计信号为数据信号或者控制信号。
第二方面， 一种自干扰信道估计装置， 包括： 处理器、 存储器、 发射 器、 接收器及总线， 其中， 所述处理器、 所述存储器、 所述发射器及所述 接收器通过所述总线相互连接，
其中， 所述发射器， 用于向接收装置发送估计信号， 所述估计信号为 所述接收装置未知的信号；
所述接收器， 用于接收所述发射器发送的估计信号；
所述处理器，用于根据所述接收器接收的估计信号进行自干扰信道估 计。
结合第二方面， 在第一种可能的实现方式中，
所述发射器， 还用于向所述接收装置发送参考信号， 以便于所述接收 装置根据所述参考信号进行通信信道估计， 其中， 所述参考信号为所述接 收装置已知的信号。
结合第二方面的第一种可能的实现方式， 在第二种可能的实现方式 中，
所述接收器， 还用于接收所述发射器发送的参考信号；
所述处理器，还用于根据所述接收器接收的所述估计信号及参考信号
进行自干扰信道估计。
结合第二方面至第二方面的第二种可能的实现方式中任一实现方式， 在第三种可能的实现方式中，
所述自干扰信道估计装置为半双工通信信机或全双工通信信机。
结合第二方面至第二方面的第三种可能的实现方式中任一实现方式， 在第四种可能的实现方式中，
所述估计信号为数据信号或者控制信号。
第三方面， 一种自干扰信道估计方法， 包括：
自干扰信道估计装置向接收装置发送估计信号，所述估计信号为所述 接收装置未知的信号；
所述自干扰信道估计装置接收自身发送的所述估计信号；
所述自干扰信道估计装置根据所述接收的估计信号进行自干扰信道 估计。
结合第三方面， 在第一种可能的实现方式中， 所述方法还包括： 所述自干扰信道估计装置向所述接收装置发送参考信号， 以便于所述 接收装置根据所述参考信号进行通信信道估计， 其中， 所述参考信号为所 述接收装置已知的信号。
结合第三方面的第一种可能的实现方式， 在第二种可能的实现方式 中， 所述方法还包括：
所述自干扰信道估计装置接收自身发送的所述参考信号；
所述自干扰信道估计装置根据所述接收的估计信号进行自干扰信道 估计， 包括：
所述自干扰信道估计装置根据所述接收的估计信号及参考信号进行 自干扰信道估计。
结合第三方面至第三方面的第二种可能的实现方式中任一实现方式， 在第三种可能的实现方式中，
所述自干扰信道估计装置为半双工通信信机或全双工通信信机。
结合第三方面至第三方面的第三种可能的实现方式中任一实现方式， 在第四种可能的实现方式中，
所述估计信号为数据信号或者控制信号。
本发明的实施例提供的自干扰信道估计方法及装置，通过自干扰信道 估计装置向接收装置发送估计信号并接收自身发送的估计信号， 该估计信 号为接收装置未知的信号，然后根据接收的估计信号进行自干扰信道估计， 提高了系统的吞吐量。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对 实施例和现有技术描述中所需要使用的附图作简单地介绍， 显而易见地， 下面描述中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员 来讲， 在不付出创造性劳动的前提下， 还可以根据这些附图获得其他的附 图。
图 1为本发明的实施例提供的一种自干扰信道估计方法流程示意图； 图 2为本发明的另一实施例提供的一种自干扰信道估计方法流程示 意图；
图 3为现有技术提供的一种自干扰信道估计时频资源占用分布示意 图；
图 4为本发明的实施例提供的一种自干扰信道估计时频资源占用分 布示意图；
图 5为本发明的实施例提供的一种自干扰信道估计装置结构示意图； 图 6为本发明的另一实施例提供的一种自干扰信道估计装置结构示 意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进 行清楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没 有做出创造性劳动前提下所获得的所有其他实施例， 都属于本发明保护的 范围。
本发明的实施例提供一种自干扰信道估计方法， 参照图 1所示， 包括 以下步骤：
101、 自干扰信道估计装置向接收装置发送估计信号。
其中该估计信号为接收装置未知的信号。 具体可选的， 未知的信号可 以是数据信号、 控制信号， 当然， 本发明中接收装置的未知信号不局限于 这两种信号。 这样对接收装置来说， 接收的未知信号不只用于自干扰信道 估计， 而且传输了数据或者控制信令， 增加了系统的吞吐量。 而现有技术 中， 利用估计通信信道的参考信号来进行自干扰信道估计， 参考信号是接 收装置已知的信号， 用于估计通信信道和自干扰信道， 该参考信号所占用 的时频资源没有用来传输数据信号和控制信号， 使系统的吞吐量减少了。
可选的，该自干扰信道估计装置可以是全双工通信信机或者半双工通 信信机， 当然并不局限于这两种通信信机。
102、 自干扰信道估计装置接收自身发送的估计信号。
103、 自干扰信道估计装置根据接收的估计信号进行自干扰信道估计。 此处， 自干扰信道估计装置根据估计信号进行自干扰信道估计， 但不 代表自干扰信道估计装置只使用估计信号进行估计， 也可以同时使用其他 的信号进行自干扰信道估计， 本实施例在此处不做限制。
现有技术中， 估计自干扰信道使用的是用来估计通信信道的参考信 号， 是通信双方都已知的信号， 而已知的参考信号没有传输数据或者控制 信令， 用于估计通信信道和自干扰信道， 这就使参考信号占用的时频资源 一定程度上降低了系统的吞吐量。 但是， 自干扰信道估计装置进行自干扰 信道估计时， 接收自干扰信道估计装置自身已知的信号就可以， 因此在发 送信号时， 不需要发送自干扰信道估计装置和接收装置双方都已知的参考 信号， 而且， 不论接收装置对自干扰信道估计装置发射的信号是否已知， 对自干扰信道估计装置自身来说发射的信号都是已知信号， 所以用接收装 置未知的信号作为估计信号进行自干扰信道估计完全可以实现， 而且， 因 为用来估计自干扰信道的估计信号是接收装置未知的控制信号或者数据信 号， 这就提高了时频资源利用率， 从而提高了系统的吞吐量。
本发明的实施例提供的自干扰信道估计方法，通过自干扰信道估计装 置向接收装置发送估计信号并接收自身发送的估计信号， 该估计信号为接 收装置未知的信号， 然后根据接收的估计信号进行自干扰信道估计， 提高
了系统的吞吐量。
基于图 1对应的实施例，本发明的另一实施例提供一种自干扰信道估 计方法， 是结合通信信道估计所描述的一种实际应用中的自干扰信道估计 方法， 参照图 2所示， 包括以下步骤：
201、 自干扰信道估计装置向接收装置发送估计信号。
其中， 该估计信号为接收装置未知的信号。 具体可选的， 接收装置未 知的信号可以是数据信号、 控制信号。
可选的，该自干扰信道估计装置可以是全双工通信信机或者半双工通 信信机， 当然并不局限于这两种通信信机。
202、 自干扰信道估计装置向接收装置发送参考信号， 以便于接收装 置根据参考信号进行通信信道估计。
其中， 该参考信号为接收装置已知的信号。
此处， 步骤 201和步骤 202无先后顺序关系。
203、 自干扰信道估计装置接收自身发送的估计信号及参考信号。 204、 自干扰信道估计装置根据接收的估计信号及参考信号进行自干 扰信道估计。
具体可选的， 可以通过现有技术中的最小均方误差、 最小二乘法等算 法估计自干扰信道的信道响应，在此不再赘述。
因为估计通信信道的参考信号要求在时域上分布密集，在频域上分布 稀疏， 所以当估计自干扰信道时， 如果只发送估计信号用于估计自干扰信 道， 那么估计信号所占有的时域内就不能发送参考信号， 这会对通信信道 的估计产生影响， 而且， 因为用于估计自干扰信道的信号要求时域分布稀 疏， 频域分布密集， 这样， 因为在频域上分布密集， 所以在接收信号用于 估计自干扰信道时， 很容易夹杂参考信号。
现有技术中， 通信信道估计和自干扰信道估计使用的都是参考信号， 但是， 因为通信信道的变化速度远大于自干扰信道， 通信信道估计要求参 考信号时域分布密集， 而自干扰信道估计为了减少频域内插带来的估计误 差， 要求参考信号频域分布密集， 所以现有技术中参考信号必须同时兼顾 时域和频域分布密集， 这就占用了大量时频资源， 而参考信号是通信双方
已知的信号， 用来进行信道估计， 不传输数据和控制信令， 使得系统的吞 吐量有所减少， 而且因为要兼顾两种估计方法， 所以系统设计艮复杂， 如 图 3所示， 横轴为时域分布， 纵轴为频域分布， 时域由左至右的 1 1列依次 为第 1个时域到第 1 1个时域， 频域由上至下的 16行依次为第 1个频域到 第 16个频域， 第一区域为接收装置未知的信号占用的时频资源，比如控制 信号或数据信号占用的时频资源， 第二区域为估计通信信道和自干扰信道 的参考信号占用的时频资源。 其中， 第 1个时域和第 1 1个时域内的参考信 号用来估计自干扰信道。
本发明通过利用接收装置未知的信号， 即估计信号来估计自干扰信 道， 能够提高时频资源利用率， 因为估计信号是接收装置未知的控制信号 或者数据信号， 估计信号不只是用来估计自干扰信道， 也传输了数据或者 控制信令， 这就提高了系统的吞吐量， 并且， 用于估计通信信道的参考信 号不用再兼顾估计自干扰信道需要频域分布密集的特性， 这也减少了已知 的参考信号占用的频域资源， 这一部分频域资源可以用来传输数据和控制 信令， 也提高了系统的吞吐量， 同时因为不用同时兼顾自干扰信道估计和 通信信道估计两种估计方法， 也使系统设计复杂度降低了。 如图 4所示， 第一区域为接收装置未知的信号占用的时频资源， 第二区域为接收装置估 计通信信道的已知的参考信号占用的时频资源，第 1个时域和第 1 1个时域 内的第三区域为估计自干扰信道的估计信号占用的时频资源， 第三区域属 于第一区域的一部分或者全部,本实施例图示中第三区域属于第一区域的 一部分， 因为估计信号也是是接收装置未知的信号，比如数据信号或者控制 信号，实际情况中，在用于自干扰信道估计的第 1个时域和第 1 1个时域内， 用于估计通信信道的参考信号也可以用于估计自干扰信道， 即第 1个时域 和第 1 1个时域内的第二区域和第三区域都可以用来估计自干扰信道。对比 图 3 , 可以看出， 因为本实施例用接收装置未知的信号,比如数据信号或者 控制信令,作为估计信号来估计自干扰信道， 而且因为本实施例的参考信号 不用兼顾估计自干扰信道时信号频域分布密集的特性， 所以在第 1个时域 和第 1 1个时域内， 图 3中一部分第二区域在图 4中变成了第三区域， 也即 图 3中第 2个频域、 第 6个频域、 第 10个频域和第 14个频域内的第二区
域在图 4中变为了第一区域， 因此用于传输接收装置未知的信号， 比如数 据和控制信令， 的第一区域和第三区域就增加了。 这样， 没有用于传输数 据或者控制信令的时频资源区域是第二区域， 这就提高了时频资源的利用 率， 提高了系统的吞吐量。 当然， 图 3和图 4所示的时频资源分布只是一 种情况， 时频资源的分布可以根据具体需求有多种分布方式， 图 3和图 4 只是体现现有技术和本发明中时频资源分布的变化情况， 并不代表本发明 只局限于这一种时频资源分布。
本发明的实施例提供的自干扰信道估计方法，通过自干扰信道估计装 置向接收装置发送估计信号并接收自身发送的估计信号， 该估计信号为接 收装置未知的信号， 然后根据接收的估计信号进行自干扰信道估计， 提高 了系统的吞吐量。 进一步的， 可以通过自干扰信道估计装置接收自身发送 的参考信号， 根据接收的估计信号和参考信号进行自干扰信道估计， 在不 影响通信信道估计的情况下， 提高了系统的吞吐量， 降低了设计复杂度。
本发明的实施例提供一种自干扰信道估计装置， 其结构如图 5所示， 该自干扰信道估计装置 501 包括： 发送单元 501 1 , 接收单元 5012和估计 单元 5013。
其中， 发送单元 501 1 , 用于向接收装置发送估计信号， 估计信号为 接收装置未知的信号。
接收单元 5012 , 用于接收发送单元 501 1发送的估计信号。
估计单元 5013 , 用于根据接收单元 5012接收的估计信号进行自干扰 信道估计。
本发明的实施例提供的自干扰信道估计装置，通过向接收装置发送估 计信号并接收自身发送的估计信号， 该估计信号为接收装置未知的信号， 然后根据接收的估计信号进行自干扰信道估计， 提高了系统的吞吐量。
可选的， 发送单元 501 1 , 还用于向接收装置发送参考信号， 以便于 接收装置根据参考信号进行通信信道估计， 其中， 参考信号为接收装置已 知的信号。
进一步可选的， 接收单元 5012 , 还用于接收发送单元 501 1发送的参 考信号。
估计单元 5013 , 还用于根据接收单元 5012接收的估计信号及参考信 号进行自干扰信道估计。
本发明的实施例提供的自干扰信道估计装置，通过向接收装置发送估 计信号并接收自身发送的估计信号， 该估计信号为接收装置未知的信号， 然后根据接收的估计信号进行自干扰信道估计， 提高了系统的吞吐量。
本发明的另一实施例提供一种自干信道扰估计装置， 参照图 6所示， 该设备可以嵌入或本身就是微处理计算机， 比如： 通用计算机、 客户定制 机、 手机终端或平板机等便携设备， 该自干扰信道估计装置 6001 包括： 至 少一个处理器 601 1、存储器 6012、总线 6013、发射器 6014和接收器 6015 , 该至少一个处理器 601 1、存储器 6012、发射器 6014和接收器 6015通过总 线 6013连接并完成相互间的通信。
该总线 6013可以是 IS A ( Industry Standard Architecture , 工业标准体 系结构） 总线、 PCI ( Peripheral Component, 外部设备互连） 总线或 EISA ( Extended Industry Standard Architecture , 扩展工业标准体系结构） 总线 等。 该总线 6013可以分为地址总线、数据总线、控制总线等。 为便于表示， 图 6中仅用一条粗线表示， 但并不表示仅有一根总线或一种类型的总线。 其巾：
存储器 6012用于存储可执行程序代码， 该程序代码包括计算机操作 指令。 存储器 6012可能包含高速 RAM存储器， 也可能还包括非易失性存 4诸器 ( non- volatile memory ) , 例如至少一个磁盘存 4诸器。
处理器 601 1可能是一个中央处理器 601 1 ( Central Processing Unit, 简称为 CPU ) ,或者是特定集成电路（ Application Specific Integrated Circuit, 简称为 ASIC ) ,或者是被配置成实施本发明实施例的一个或多个集成电路。
其中， 发射器 6014 , 用于向接收装置发送估计信号， 估计信号为接 收装置未知的信号。
接收器 6015 , 用于接收发射器 6014发送的估计信号。
处理器 601 1 , 用于根据接收器 6015接收的估计信号进行自干扰信道 估计。
本发明的实施例提供的自干扰信道估计装置，通过向接收装置发送估
计信号并接收自身发送的估计信号， 该估计信号为接收装置未知的信号， 然后根据接收的估计信号进行自干扰信道估计， 提高了系统的吞吐量。
可选的， 发射器 6014 , 还用于向接收装置发送参考信号， 以便于接 收装置根据参考信号进行通信信道估计， 其中， 参考信号为接收装置已知 的信号。
进一步可选的， 接收器 6015 , 还用于接收发射器 6014发送的参考信 号。
处理器 601 1 , 还用于根据接收器 6015接收的估计信号及参考信号进 行自干扰信道估计。
本发明的实施例提供的自干扰信道估计装置，通过向接收装置发送估 计信号并接收自身发送的估计信号， 该估计信号为接收装置未知的信号， 然后根据接收的估计信号进行自干扰信道估计， 提高了系统的吞吐量。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到 本发明可以用硬件实现， 或固件实现， 或它们的组合方式来实现。 当使用 软件实现时， 可以将上述功能存储在计算机可读介质中或作为计算机可读 介质上的一个或多个指令或代码进行传输。 计算机可读介质包括计算机存 储介质和通信介质， 其中通信介质包括便于从一个地方向另一个地方传送 计算机程序的任何介质。存储介质可以是计算机能够存取的任何可用介质。 以此为例但不限于： 计算机可读介质可以包括 RAM ( Random Access Memory, 随机存储器 )、 ROM ( Read Only Memory, 只读内存）、 EEPROM ( Electrically Erasable Programmable Read Only Memory, 电可擦可编程只 读存储器） 、 CD-ROM ( Compact Disc Read Only Memory, 即只读光盘） 或其他光盘存储、 磁盘存储介质或者其他磁存储设备、 或者能够用于携带 或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的 任何其他介质。 此外。 任何连接可以适当的成为计算机可读介质。 例如， 如果软件是使用同轴电缆、光纤光缆、双绞线、 DSL( Digital Subscriber Line , 数字用户专线） 或者诸如红外线、 无线电和微波之类的无线技术从网站、 服务器或者其他远程源传输的， 那么同轴电缆、 光纤光缆、 双绞线、 DSL 或者诸如红外线、 无线和微波之类的无线技术包括在所属介质的定影中。
如本发明所使用的， 盘和碟包括 CD ( Compact Disc , 压缩光碟）、 激光碟、 光碟、 DVD碟 （Digital Versatile Disc, 数字通用光） 、 软盘和蓝光光碟， 其中盘通常磁性的复制数据， 而碟则用激光来光学的复制数据。 上面的组 合也应当包括在计算机可读介质的保护范围之内。
以上所述， 仅为本发明的具体实施方式， 但本发明的保护范围并不局 限于此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可 轻易想到变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明 的保护范围应所述以权利要求的保护范围为准。
Claims
1、 一种自干扰信道估计装置， 其特征在于， 包括：
发送单元， 用于向接收装置发送估计信号， 所述估计信号为所述接收 装置未知的信号；
接收单元， 用于接收所述发送单元发送的估计信号；
估计单元， 用于根据所述接收单元接收的估计信号进行自干扰信道估 计。
2、 根据权利要求 1所述的装置， 其特征在于， 包括：
所述发送单元， 还用于向所述接收装置发送参考信号， 以便于所述接 收装置根据所述参考信号进行通信信道估计， 其中， 所述参考信号为所述 接收装置已知的信号。
3、 根据权利要求 2所述的装置， 其特征在于， 包括：
所述接收单元， 还用于接收所述发送单元发送的参考信号；
所述估计单元，还用于根据所述接收单元接收的估计信号及参考信号 进行自干扰信道估计。
4、 根据权利要求 1-3任一项所述的装置， 其特征在于， 包括： 所述自干扰信道估计装置为半双工通信信机或全双工通信信机。
5、 根据权利要求 1-4任一项所述的装置， 其特征在于， 包括： 所述估计信号为数据信号或者控制信号。
6、 一种自干扰信道估计装置， 其特征在于， 包括： 处理器、 存储器、 发射器、 接收器及总线， 其中， 所述处理器、 所述存储器、 所述发射器及 所述接收器通过所述总线相互连接，
其中， 所述发射器， 用于向接收装置发送估计信号， 所述估计信号为 所述接收装置未知的信号；
所述接收器， 用于接收所述发射器发送的估计信号；
所述处理器， 用于根据所述接收器接收的估计信号进行自干扰信道估 计。
7、 根据权利要求 6所述的装置， 其特征在于， 包括：
所述发射器， 还用于向所述接收装置发送参考信号， 以便于所述接收
装置根据所述参考信号进行通信信道估计， 其中， 所述参考信号为所述接 收装置已知的信号。
8、 根据权利要求 7所述的装置， 其特征在于， 包括：
所述接收器， 还用于接收所述发射器发送的参考信号；
所述处理器，还用于根据所述接收器接收的所述估计信号及参考信号 进行自干扰信道估计。
9、 根据权利要求 6-8任一项所述的装置， 其特征在于， 包括： 所述自干扰信道估计装置为半双工通信信机或全双工通信信机。
10、 根据权利要求 6-9任一项所述的装置， 其特征在于， 包括： 所述估计信号为数据信号或者控制信号。
1 1、 一种自干扰信道估计方法， 其特征在于， 包括：
自干扰信道估计装置向接收装置发送估计信号， 所述估计信号为所述 接收装置未知的信号；
所述自干扰信道估计装置接收自身发送的所述估计信号；
所述自干扰信道估计装置根据所述接收的估计信号进行自干扰信道 估计。
12、 根据权利要求 1 1所述的方法， 其特征在于， 所述方法还包括： 所述自干扰信道估计装置向所述接收装置发送参考信号， 以便于所述 接收装置根据所述参考信号进行通信信道估计， 其中， 所述参考信号为所 述接收装置已知的信号。
13、 根据权利要求 12所述的方法， 其特征在于， 所述方法还包括： 所述自干扰信道估计装置接收自身发送的所述参考信号；
所述自干扰信道估计装置根据所述接收的估计信号进行自干扰信道 估计， 包括：
所述自干扰信道估计装置根据所述接收的估计信号及参考信号进行 自干扰信道估计。
14、 根据权利要求 1 1 -13任一项所述的方法， 其特征在于， 包括： 所述自干扰信道估计装置为半双工通信信机或全双工通信信机。
15、 根据权利要求 1 1 -14任一项所述的方法， 其特征在于， 包括：
所述估计信号为数据信号或者控制信号。
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| PCT/CN2013/087635 WO2015074230A1 (zh) | 2013-11-21 | 2013-11-21 | 一种自干扰信道估计方法及装置 |
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| CN103200140A (zh) * | 2012-01-06 | 2013-07-10 | 北京大学 | 一种基于预均衡的干扰消除系统及方法 |
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