An array transceiver system

Abstract

The present invention relates to an array transceiver system, which belongs to the field of communication technology and solves the problem of poor signal quality obtained by a simultaneous and same-frequency transceiver array when receiving signals in the prior art. The array transceiver system includes multiple array modules, each array module includes a digital processing unit and multiple transceiver units, and different array modules exchange data through their respective digital processing units; each transceiver unit includes a first channel, a second channel, a switch network, a coupler and an antenna; the first channel and the second channel are respectively connected to the digital processing unit, the first channel transmits the signal from the digital processing unit to the coupler through the switch network, and the second channel transmits the signal from the coupler to the digital processing unit through the switch network; the antenna is used to transmit the signal to be transmitted in the coupler or transmit the received antenna signal to the coupler. High-quality signal transmission and reception of the array transceiver system is achieved.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to an array transceiver system. Background Art

[0002] With the advancement of electronic technology and the increase in demand, the traditional single-channel electromagnetic wave transceiver system has gradually developed towards multi-channel and array-based. At present, the types of mission systems configured on various electromagnetic transceiver platforms are gradually increasing, and the functions of electronic systems are becoming more and more, and the performance requirements are becoming higher and higher. Large-scale multiple-input multiple-output technology is one of the key technologies of the next generation of mobile communication systems, with advantages such as high energy efficiency, high spectrum efficiency and stable performance.

[0003] The array transceiver system in the prior art is generally an integrated multifunctional array system that realizes the time-sharing occupation of each function through resource management and scheduling methods. Transmission and reception need to work in time or frequency division. When transmission and reception work at the same frequency at the same time, the transmission signal and its noise and nonlinear distortion interference will be coupled to the receiving channel through space, causing strong interference to the signal of interest that the receiving channel needs to receive, seriously affecting the signal quality obtained by the receiving channel.

[0004] And when the transmitting channel and the receiving channel are close, high-power interference will saturate the receiving channel. The saturation of the receiving path components will cause the receiving channel to fail to work normally or even be damaged, seriously affecting the signal quality obtained by the receiving channel. Summary of the invention

[0005] In view of the above analysis, an embodiment of the present invention aims to provide an array transceiver system to solve the problem of poor signal quality obtained by a simultaneous and co-frequency transceiver array when receiving signals in the prior art.

[0006] An embodiment of the invention provides an array transceiver system, the array transceiver system comprising a plurality of array modules, each array module comprising a digital processing unit and a plurality of transceiver units, and different array modules exchange data through their respective digital processing units;

[0007] Each transceiver unit includes a first channel, a second channel, a switch network, a coupler and an antenna;

[0008] The first channel and the second channel are connected to the digital processing unit respectively, the first channel transmits the signal from the digital processing unit to the coupler through the switch network, and the second channel transmits the signal from the coupler to the digital processing unit through the switch network;

[0009] The antenna is used to transmit the signal to be transmitted in the coupler or transmit the received antenna signal to the coupler.

[0010] Based on the further improvement of the above system, the working mode of the transceiver unit includes a transmitting working mode and a receiving working mode, and the working mode of the transceiver unit is set by a switch network;

[0011] In the transmitting working mode, the transceiver unit is used to transmit the signal to be transmitted into the air;

[0012] In the receiving working mode, the transceiver unit is used to receive antenna signals from the air.

[0013] Based on the further improvement of the above system, when the working mode of the transceiver unit is the transmitting working mode, the first channel receives the signal to be transmitted from the digital processing unit and transmits the signal to be transmitted to the switch network, and the switch network transmits the signal to be transmitted to the coupler;

[0014] The coupler transmits the signal to be transmitted to the antenna, and then transmits it;

[0015] At the same time, the coupler transmits the coupled signal of the signal to be transmitted as an observation signal to the switch network, the switch network transmits the observation signal to the second channel, and the second channel transmits the observation signal to the digital processing unit.

[0016] Based on the further improvement of the above system, when the working mode of the transceiver unit is the receiving working mode, the digital processing unit filters the signals to be transmitted of other transceiver units to output a cancellation signal, and transmits the cancellation signal to the switch network through the first channel, and the switch network transmits the cancellation signal to the coupler;

[0017] The antenna transmits the received antenna signal to the coupler; after the antenna signal and the cancellation signal are interfered with each other in the coupler, the coupler outputs the interference-cancelled antenna signal to the switch network;

[0018] The switch network transmits the antenna signal after the interference cancellation to the second channel, and the second channel transmits the antenna signal after the interference cancellation to the digital processing unit;

[0019] The digital processing unit is used to filter the observation signal, and use the filtered observation signal to perform interference cancellation on the antenna signal after interference cancellation again to obtain the signal of interest.

[0020] Based on the further improvement of the above system, each array module further includes a first transmitting shaper, a second transmitting shaper, a first receiving shaper and a second receiving shaper;

[0021] A first transmission shaper, configured to receive a signal to be transmitted from a digital processing unit and transmit the signal to be transmitted to a first channel;

[0022] a second transmission shaper for receiving the cancellation signal from the digital processing unit and transmitting the cancellation signal to the first channel;

[0023] a first receiving shaper, for receiving an observation signal from the second channel and transmitting the observation signal to a digital processing unit;

[0024] The second receiving shaper is used to receive the antenna signal after interference cancellation from the second channel, and transmit the antenna signal after interference cancellation to the digital processing unit.

[0025] Based on the further improvement of the above system, the first channel includes a digital up-converter, a digital-to-analog converter, an adjustable amplifier and a transmit filter connected in sequence;

[0026] The digital up-converter is connected to the first transmission shaper or the second transmission shaper and is used to receive the signal to be transmitted or the cancellation signal;

[0027] The signal to be transmitted or the cancellation signal passes through the digital-to-analog converter, the adjustable amplifier and the transmission filter in sequence;

[0028] The transmitting filter is connected to the switch network and outputs the signal to be transmitted or the offset signal to the switch network.

[0029] Based on the further improvement of the above system, the second channel includes an adjustable gain and attenuator, a receiving filter, an analog-to-digital converter and a digital down-converter connected in sequence;

[0030] The adjustable gain and attenuator are connected to the switch network and are used to receive the observation signal or the antenna signal after interference cancellation from the switch network;

[0031] The observation signal or the antenna signal after interference cancellation passes through the receiving filter, analog-to-digital converter and digital down converter in sequence;

[0032] The digital down converter is connected to the first receiving shaper and the second receiving shaper, and transmits the observation signal or the antenna signal after interference cancellation to the first receiving shaper and the second receiving shaper.

[0033] Based on the further improvement of the above system, the coupler includes a first input and output port, a second input and output port and a coupling port;

[0034] The first input / output port is connected to the antenna, the second input / output port is connected to the switch network, and the coupling port is connected to the switch network;

[0035] In the transmission working mode, the second input / output port receives the signal to be transmitted from the switch network, the signal to be transmitted is transmitted from the first input / output port to the antenna, and the observation signal is output from the coupling port to the switch network.

[0036] Based on further improvements of the above system, in the receiving working mode, the coupling port receives the cancellation signal from the switching network, the first input-output port receives the antenna signal from the antenna, and the second input-output port outputs the antenna signal after interference cancellation to the switching network.

[0037] Based on a further improvement of the above system, in the transmitting working mode, the switch network connects the first channel to the second input-output port and connects the second channel to the coupling port;

[0038] In the receiving operation mode, the switch network connects the first channel to the coupling port and connects the second channel to the second input-output port.

[0039] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0040] 1. By setting a first channel and a second channel in each transceiver unit, the first channel transmits the signal of the digital processing unit to the coupler, and the second channel transmits the signal of the coupler to the digital processing unit, so that in the array transceiver system, multiple transceiver units of each array module can work at the same frequency at the same time, thereby improving the efficiency of the array transceiver system when transmitting and receiving at the same time and the quality of the received signal;

[0041] 2. Each transceiver unit can set the working mode through the switch network, and has two working modes, so that the array transceiver system can flexibly switch the working mode according to actual needs when working, reasonably set the number of transceiver units in the receiving working mode and the transmitting working mode, improve the quality of the transmitting and receiving signals, and increase the flexibility of the array transceiver system;

[0042] 3. Each array module can be flexibly expanded into a larger-scale array transceiver system with a tile-like architecture, so that the array transceiver system can meet the needs of different application scenarios.

[0043] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components;

[0045] Figure 1 One of the structural schematic diagrams of an array transceiver system provided by an embodiment of the present invention;

[0046] Figure 2 A second structural diagram of an array transceiver system provided by an embodiment of the present invention;

[0047] Figure 3 A schematic diagram of the structure of a transceiver unit in a transmitting working mode and a receiving working mode provided by an embodiment of the present invention;

[0048] Figure 4 A schematic diagram of the structure of an array module provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0049] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0050] A specific embodiment of the present invention discloses an array transceiver system, such as Figure 1 As shown, the array transceiver system includes multiple array modules, each array module includes a digital processing unit and multiple transceiver units, and different array modules exchange data through their respective digital processing units;

[0051] Each transceiver unit includes a first channel, a second channel, a switch network, a coupler and an antenna;

[0052] The first channel and the second channel are connected to the digital processing unit respectively, the first channel transmits the signal from the digital processing unit to the coupler through the switch network, and the second channel transmits the signal from the coupler to the digital processing unit through the switch network;

[0053] The antenna is used to transmit the signal to be transmitted in the coupler or transmit the received antenna signal to the coupler.

[0054] Specifically, Figure 1 As shown, the array transceiver system may include multiple array modules, and the multiple array modules exchange data through their respective digital processing units. The distribution arrangement between the multiple array modules can be reasonably set according to actual conditions, such as Figure 2 The array transceiver system is composed of four array modules: array module 1, array module 2, array module 3 and array module 4.

[0055] Specifically, Figure 1 As shown, each array module includes a digital processing unit and multiple transceiver units, and each transceiver unit includes a first channel, a second channel, a switch network, a coupler, and an antenna. The first channel is used to upload the signal of the digital processing unit to the switch network, and then transmit it to the coupler through the switch network, and the signal in the coupler is transmitted to the digital processing unit through the switch network and the second channel.

[0056] Specifically, the digital processing unit is used to perform various sending and receiving processes on the signal.

[0057] Specifically, Figure 2 As shown, each array module includes 16 transceiver units.

[0058] Preferably, the working mode of the transceiver unit includes a transmitting working mode and a receiving working mode, and the working mode of the transceiver unit is set by a switch network;

[0059] In the transmitting working mode, the transceiver unit is used to transmit the signal to be transmitted into the air;

[0060] In the receiving working mode, the transceiver unit is used to receive antenna signals from the air.

[0061] Specifically, the transceiver unit has two working modes, namely, a transmitting working mode and a receiving working mode, that is, the transceiver unit can be set to a transmitting working mode or a receiving working mode. It is worth noting that each transceiver unit is set to either a transmitting working mode or a receiving working mode when working.

[0062] Specifically, when the transceiver unit is set to the receiving working mode through the switching network, the transceiver unit will transmit the signal to be transmitted into the air through the antenna, and the signal to be transmitted represents the signal that the digital processing unit needs to transmit into the air; when the transceiver unit is set to the receiving working mode through the switching network, the transceiver unit receives the antenna signal in the air through the antenna and transmits it to the digital processing unit.

[0063] Specifically, Figure 3 As shown, different transceiver units in a single array module can be set to a receiving working mode and a transmitting working mode respectively.

[0064] Preferably, when the working mode of the transceiver unit is the transmitting working mode, the first channel receives the signal to be transmitted from the digital processing unit and transmits the signal to be transmitted to the switch network, and the switch network transmits the signal to be transmitted to the coupler;

[0065] The coupler transmits the signal to be transmitted to the antenna, and then transmits it;

[0066] At the same time, the coupler transmits the coupled signal of the signal to be transmitted as an observation signal to the switch network, the switch network transmits the observation signal to the second channel, and the second channel transmits the observation signal to the digital processing unit.

[0067] Specifically, Figure 3As shown, when the working mode of the transceiver unit is set to the transmitting working mode, the first channel receives the signal to be transmitted from the digital processing unit, and transmits the signal to be transmitted to the switch network, and transmits the signal to be transmitted to the coupler through the setting of the switch network, and then transmits it. At the same time, in the coupler, the coupled signal of the signal to be transmitted is transmitted to the switch network as an observation signal through coupling, and the switch network transmits the observation signal to the second channel, and then transmits it to the digital processing unit.

[0068] Preferably, when the working mode of the transceiver unit is the receiving working mode, the digital processing unit filters the signals to be transmitted of other transceiver units to output a cancellation signal, and transmits the cancellation signal to the switch network through the first channel, and the switch network transmits the cancellation signal to the coupler;

[0069] The antenna transmits the received antenna signal to the coupler; after the antenna signal and the cancellation signal are interfered with each other in the coupler, the coupler outputs the interference-cancelled antenna signal to the switch network;

[0070] The switch network transmits the antenna signal after the interference cancellation to the second channel, and the second channel transmits the antenna signal after the interference cancellation to the digital processing unit;

[0071] The digital processing unit is used to filter the observation signal, and use the filtered observation signal to perform interference cancellation on the antenna signal after interference cancellation again to obtain the signal of interest.

[0072] Specifically, Figure 3 As shown, when the working mode of the transceiver unit is set to the receiving working mode, the digital processing unit filters the signals to be transmitted of other transceiver units, and transmits the filtered signals to be transmitted as cancellation signals to the switch network through the first channel, and the switch network transmits the cancellation signal to the coupler; in the coupler, the antenna signal received from the antenna is interfered with and canceled by the cancellation signal, which can reduce the nonlinear interference of the signals to be transmitted that have been transmitted into the air by other transceiver units to the received signal, and the coupler transmits the antenna signal after interference cancellation to the switch network, and the switch network transmits the canceled antenna signal to the digital processing unit through the second channel.

[0073] Specifically, when a certain transceiver unit in the array module is set to the receiving working mode, it is necessary to receive the signal of interest in the air. When receiving through the antenna, since the distance between the two transceiver units in the array module is relatively close, the transceiver unit in the transmitting working mode generates high-power interference to the transceiver unit in the receiving working mode, so that the second channel receiving device in the receiving working mode is saturated, which may cause the receiving device of the second channel to fail to work normally or even be damaged. In the present invention, the signal to be transmitted transmitted by the transceiver unit in the transmitting working mode is filtered, and the obtained cancellation signal is transmitted to the coupler through the first channel. The antenna signal received by the antenna is canceled through the coupling of the coupler, thereby avoiding the second channel of the receiving device of the transceiver unit in the receiving working mode from failing to work normally, resulting in poor signal reception or reception failure.

[0074] In the digital processing unit, the antenna signal after cancellation received by the transceiver unit in the receiving working mode needs to be cancelled again. It is worth noting that the coupled signal of the signal to be transmitted of other transceiver units is stored in the digital processing unit as an observation signal, and the interference cancellation is performed for other transceiver units in the receiving working mode. The digital processing unit filters the observation signal, and uses the observation signal after filtering to cancel the interference of the antenna signal after cancellation, so as to obtain the signal of interest.

[0075] It is worth noting that for the transceiver unit in the transmitting working mode, the signal to be transmitted will introduce additional noise and distortion signals through the first channel. When passing through the coupler, the coupled signal of the signal to be transmitted is introduced into the digital processing unit through the second channel as an observation signal. The observation signal is filtered in the digital processing unit, and the filtered observation signal is used to perform interference cancellation on the canceled antenna signal received by the transceiver unit in the receiving working mode, thereby obtaining the signal of interest.

[0076] It is worth noting that for the transceiver unit in the receiving working mode, it is necessary to perform interference cancellation on the received antenna signal twice. The first time, the received antenna signal is interfered with by the cancellation signal in the coupler, and the second time, the interference cancellation is performed on the antenna signal after the interference cancellation by using the observation signal after filtering in the digital processing unit, so as to obtain the signal of interest. By setting the first channel and the second channel in each transceiver unit, the first channel transmits the signal of the digital processing unit to the coupler, and the second channel transmits the signal of the coupler to the digital processing unit, it is achieved that in the array transceiver system, multiple transceiver units of each array module can work at the same frequency at the same time, thereby improving the efficiency of the array transceiver system when transmitting and receiving at the same time and the quality of the received signal.

[0077] Preferably, if Figure 4As shown, each array module further includes a first transmitting shaper, a second transmitting shaper, a first receiving shaper and a second receiving shaper;

[0078] A first transmission shaper, configured to receive a signal to be transmitted from a digital processing unit and transmit the signal to be transmitted to a first channel;

[0079] a second transmission shaper for receiving the cancellation signal from the digital processing unit and transmitting the cancellation signal to the first channel;

[0080] a first receiving shaper, for receiving an observation signal from the second channel and transmitting the observation signal to a digital processing unit;

[0081] The second receiving shaper is used to receive the antenna signal after interference cancellation from the second channel, and transmit the antenna signal after interference cancellation to the digital processing unit.

[0082] Specifically, Figure 4 As shown, the first transmission shaper is used to receive the signal to be transmitted from the digital processing unit, and the signal to be transmitted is transmitted by the transceiver unit in the transmission working mode; the second transmission shaper is used to receive the cancellation signal from the digital processing unit, and the cancellation signal is the signal to be transmitted of the transceiver unit in the transmission working mode after filtering, and the cancellation signal is used to cancel the antenna signal received by the coupler by the transceiver unit in the receiving working mode. It is worth noting that the interference signal reconstruction 2 is to filter the signal to be transmitted of the transceiver unit in the transmission working mode, and the signal to be transmitted after filtering is transmitted to the second transmission shaper as the cancellation signal.

[0083] Specifically, Figure 4 As shown, the first receiving shaper is used to receive the observation signal from the second channel of the transceiver unit in the transmitting working mode, and transmit the observation signal to the digital processing unit, the digital processing unit filters the observation signal through the interference signal reconstruction 1, and uses the filtered observation signal to perform interference cancellation again on the antenna signal after interference cancellation of the transceiver unit in the receiving working mode. The second receiving shaper is used to receive the antenna signal after interference cancellation output by the second channel of the transceiver unit in the receiving working mode, and transmit it to the digital processing unit.

[0084] Specifically, Figure 4 As shown, the following describes how to determine the filter coefficients of interference signal reconstruction 1 and interference signal reconstruction 2.

[0085] For interference signal reconstruction 1, the cancellation principle and coefficient calculation process are as follows:

[0086] When the signal to be transmitted transmitted by the transceiver unit (transmitter unit) in the transmitting working mode passes through the first channel, an interference signal is generated. In addition to the linear distortion signal of the baseband, the interference signal also contains the nonlinear distortion signal generated by the transmitting device in the first channel. After the generated linear distortion signal and nonlinear distortion signal enter the coupler through the second input and output port of the coupler, they are divided into two paths:

[0087] ① One path enters the antenna from the first input and output port of the coupler, is coupled to the transceiver unit (receiving unit) in the receiving working mode through the spatial channel, is received by the second channel of the transceiver unit, enters the digital processing unit, and is offset by the output end of the interference signal reconstruction 1;

[0088] ② Another path passes through the coupling port of the coupler as an observation signal and enters the second channel of the transceiver unit in the transmitting working mode, is received by the second channel, and enters the input end of the interference signal reconstruction 1 in the digital processing unit.

[0089] Assume that the signal to be transmitted is x, and the channel responses of the first channel of the transmitting unit, the second channel of the transmitting unit, the spatial channel, and the second channel of the receiving unit are H Tx , H Ob , H Air , H Rx , then the signal at the input of interference signal reconstruction 1 is , Represents the convolution operation, and the signal at the output of interference signal reconstruction 1 is Then when the interference signal reconstructs the channel response of 1, When the two signals separated by the transmitting unit coupler are used, they can be offset in the receiving unit.

[0090] 1. Through the training process, we can calculate the required channel response. The specific steps are: transmit the training signal t from the first channel of the transmitting unit Tx , respectively receive training signals from the second channel of the receiving unit and the second channel of the transmitting unit, denoted as t Rx and t Ob .but .So, ;

[0091] 2. Calculate the filter coefficients corresponding to the interference signal reconstruction 1: define L as the maximum number of taps of the filter. Construct vector u=[-L / 2,-L / 2+1,…,L / 2-1], linear training matrix M=exp(-2πi·b T u / f s ), where f s is the baseband sampling rate, b is the frequency value vector corresponding to the training comb spectrum signal;

[0092] 3. Calculate the filter coefficient v1 by solving the following optimization problem, where Represents the second-order norm of x: ;

[0093] 4. When the filter coefficient corresponding to the interference signal reconstruction 1 is set to the calculated value, when the actual signal is transmitted, the two signals separated by the coupler of the transmitting unit can be offset at the digital processing unit of the receiving unit.

[0094] For interference signal reconstruction 2, the cancellation principle and coefficient calculation process are as follows:

[0095] When the signal to be transmitted of the transmitting unit is transmitted through the first channel, an interference signal is generated, which enters the transmitting antenna from the first input and output port of the coupler, is coupled to the receiving unit through the spatial channel, and is received by the second channel of the receiving unit.

[0096] Since the transmitting unit and the receiving unit are close to each other and the transmitting power is large, the power of the interference signal received by the receiving unit may exceed the threshold, affecting the normal operation of the receiving unit. Therefore, the signal to be transmitted is introduced as a reference in the digital processing unit. After the interference signal reconstruction 2, it is transmitted by the first channel of the receiving unit and introduced through the coupling port of the coupler of the receiving unit. In the coupler, it cancels out the interference signal after spatial coupling.

[0097] Assume that the signal to be transmitted of the transmitting unit is x, and the channel responses of the first channel of the transmitting unit, the first channel of the receiving unit, the spatial channel and the second channel of the receiving unit are H Tx , H Dx , H Air , H Rx , then the signal at the input of interference signal reconstruction 2 is y 2In = x, the signal at the output of interference signal reconstruction 2 is , Represents a convolution operation.

[0098] Then when the interference signal reconstructs the channel response of 2, When the two signals separated by the coupler of the transmitting unit are connected, they can be cancelled out in the receiving path.

[0099] 1. Through the training process, we can calculate the required channel response. The specific steps are: transmit the training signal t from the first channel of the transmitting unit Tx , the training signal t is transmitted from the first channel of the receiving unit Dx , respectively receive the transmitted training signal from the second channel of the receiving unit, denoted as t Rx1 and t Rx2 .but .So, .

[0100] 2. Calculate the filter coefficients corresponding to the interference signal reconstruction 2: define L as the maximum number of taps of the set filter. Construct vector u=[-L / 2,-L / 2+1,…,L / 2-1], linear training matrix M=exp(-2πi·b T u / f s ), where f s is the baseband sampling rate, b is the frequency value vector corresponding to the training comb spectrum signal;

[0101] 3. Calculate the filter coefficient v2 by solving the following optimization problem, where Represents the second-order norm of x: ;

[0102] 4. When the filter coefficient corresponding to the interference signal reconstruction 2 is set to the calculated value, when the actual signal is transmitted, the signal to be transmitted by the transmitting unit can be offset in the coupler of the receiving unit, thereby avoiding the interference caused by the signal to be transmitted by the transmitting unit to the receiving unit when receiving the signal.

[0103] Preferably, if Figure 3 As shown, the first channel includes a digital up-converter, a digital-to-analog converter, an adjustable amplifier and a transmit filter connected in sequence;

[0104] The digital up-converter is connected to the first transmission shaper or the second transmission shaper and is used to receive the signal to be transmitted or the cancellation signal;

[0105] The signal to be transmitted or the cancellation signal passes through the digital-to-analog converter, the adjustable amplifier and the transmission filter in sequence;

[0106] The transmitting filter is connected to the switch network and outputs the signal to be transmitted or the offset signal to the switch network.

[0107] Preferably, if Figure 3 As shown, the second channel includes an adjustable gain and attenuator, a receiving filter, an analog-to-digital converter and a digital down-converter connected in sequence;

[0108] The adjustable gain and attenuator are connected to the switch network and are used to receive the observation signal or the antenna signal after interference cancellation from the switch network;

[0109] The observation signal or the antenna signal after interference cancellation passes through the receiving filter, analog-to-digital converter and digital down converter in sequence;

[0110] The digital down converter is connected to the first receiving shaper and the second receiving shaper, and transmits the observation signal or the antenna signal after interference cancellation to the first receiving shaper and the second receiving shaper respectively.

[0111] Specifically, Figure 3 and Figure 4 As shown, when the working mode of the transceiver unit is the transmitting working mode, in the first channel, the digital up converter (DUC) receives the signal to be transmitted from the first transmitting shaper, and the signal to be transmitted passes through the digital to analog converter (DAC), the adjustable amplifier and the transmitting filter in sequence. The transmitting filter transmits the signal to be transmitted to the switch network, and the switch network transmits the signal to be transmitted to the coupler. In the coupler, on the one hand, the signal to be transmitted is transmitted to the antenna for transmission. On the other hand, the coupled signal of the signal to be transmitted is transmitted to the second channel as an observation signal. In the second channel, the observation signal is received by using an adjustable gain and attenuator, and the observation signal passes through the receiving filter, the analog to digital converter (ADC) and the digital down converter (DDC) in sequence, and then transmitted to the first receiving shaper.

[0112] Specifically, Figure 3 and Figure 4 As shown, when the working mode of the transceiver unit is the receiving working mode, the first channel uses the DUC to receive the cancellation signal of the second transmitting shaper, and the cancellation signal passes through the DAC, the adjustable amplifier and the transmitting filter in sequence, and the transmitting filter transmits the cancellation signal to the coupler through the switch network. In the coupler, the cancellation signal is used to cancel the interference of the antenna signal connected to the coupler. The antenna signal after the interference cancellation reaches the second channel through the switch network, and passes through the adjustable gain and attenuator, the receiving filter, the ADC and the DUC in the second channel in sequence, and then connected to the second receiving shaper.

[0113] Preferably, if Figure 3 As shown, the coupler includes a first input and output port, a second input and output port, and a coupling port;

[0114] The first input / output port is connected to the antenna, the second input / output port is connected to the switch network, and the coupling port is connected to the switch network;

[0115] In the transmission working mode, the second input / output port receives the signal to be transmitted from the switch network, the signal to be transmitted is transmitted from the first input / output port to the antenna, and the observation signal is output from the coupling port to the switch network.

[0116] Specifically, Figure 3As shown, the first input / output port is used to connect to the antenna, and is used to receive the antenna signal received by the antenna or send the signal to be transmitted to the antenna. The second input / output port and the coupling port are used to connect to the switch network. When the working mode of the transceiver unit is the transmitting working mode, the second input / output port is connected to the first channel, and the coupling port is connected to the second channel; when the working mode of the transceiver unit is the receiving working mode, the second input / output port is connected to the second channel, and the coupling port is connected to the first channel.

[0117] Preferably, in the receiving working mode, the coupling port receives the cancellation signal from the switch network, the first input-output port receives the antenna signal from the antenna, and the second input-output port outputs the antenna signal after interference cancellation to the switch network.

[0118] Preferably, in the transmitting working mode, the switch network connects the first channel to the second input-output port and simultaneously connects the second channel to the coupling port;

[0119] In the receiving operation mode, the switch network connects the first channel to the coupling port and connects the second channel to the second input-output port.

[0120] Specifically, when the transceiver unit is in the transmitting working mode, the second input and output port receives the signal to be transmitted from the first channel, and transmits the signal to be transmitted from the first input and output port to the antenna. At the same time, the coupled signal of the signal to be transmitted, that is, the observation signal, is transmitted to the second channel through the coupling port of the coupler, and the second channel transmits the observation signal to the digital processing unit, so that the digital processing unit can cancel the interference of the received signal when the transceiver unit is in the receiving working mode.

[0121] Specifically, when the transceiver unit is in the receiving working mode, the coupling port receives the cancellation signal from the first channel, and the cancellation signal in the coupler cancels the interference of the antenna signal received in the coupler. The antenna signal after interference cancellation is output from the second input and output port to the second channel. The second channel transmits the antenna signal after interference cancellation to the second receiving shaper and enters the digital processing unit. In the digital processing unit, the observation signal is used to cancel the interference of the antenna signal after interference cancellation again, so as to obtain the signal of interest.

[0122] Compared with the prior art, the array transceiver system provided by the embodiment of the present invention, by setting a first channel and a second channel in each transceiver unit, the first channel transmits the signal of the digital processing unit to the coupler, and the second channel transmits the signal of the coupler to the digital processing unit, so that in the array transceiver system, multiple transceiver units of each array module can work at the same frequency at the same time, thereby improving the efficiency of the array transceiver system when simultaneously transmitting and receiving and the quality of the received signal; at the same time, each transceiver unit can set the working mode through the switch network, and each has two working modes, so that when the array transceiver system is working, it can flexibly switch the working mode according to actual needs, reasonably set the number of transceiver units in the receiving working mode and the transmitting working mode, improve the quality of the transmitted signal and the received signal, and increase the flexibility of the array transceiver system; and each array module can be flexibly expanded into a larger-scale array transceiver system with a tile-type architecture, so that the array transceiver system can meet the needs of different application scenarios.

[0123] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0124] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An array transceiver system, characterized in that: The array transceiver system includes a plurality of array modules, each array module includes a digital processing unit and a plurality of transceiver units, and different array modules exchange data through their respective digital processing units; Each transceiver unit includes a first channel, a second channel, a switch network, a coupler and an antenna; The first channel and the second channel are connected to the digital processing unit respectively, the first channel transmits the signal from the digital processing unit to the coupler through the switch network, and the second channel transmits the signal from the coupler to the digital processing unit through the switch network; An antenna, used to transmit the signal to be transmitted in the coupler or to transmit the received antenna signal to the coupler; The working mode of the transceiver unit includes a transmitting working mode and a receiving working mode, and the working mode of the transceiver unit is set by a switch network; In the transmitting working mode, the transceiver unit is used to transmit the signal to be transmitted into the air; In the receiving working mode, the transceiver unit is used to receive antenna signals from the air; When the working mode of the transceiver unit is the transmitting working mode, the first channel receives the signal to be transmitted from the digital processing unit and transmits the signal to be transmitted to the switch network, and the switch network transmits the signal to be transmitted to the coupler; The coupler transmits the signal to be transmitted to the antenna, and then transmits it; At the same time, the coupler transmits the coupled signal of the signal to be transmitted as an observation signal to the switch network, the switch network transmits the observation signal to the second channel, and the second channel transmits the observation signal to the digital processing unit; When the working mode of the transceiver unit is the receiving working mode, the digital processing unit filters the signals to be transmitted of other transceiver units to output a cancellation signal, and transmits the cancellation signal to the switch network through the first channel, and the switch network transmits the cancellation signal to the coupler; The antenna transmits the received antenna signal to the coupler; after the antenna signal and the cancellation signal are interfered with each other in the coupler, the coupler outputs the interference-cancelled antenna signal to the switch network; The switch network transmits the antenna signal after the interference cancellation to the second channel, and the second channel transmits the antenna signal after the interference cancellation to the digital processing unit; The digital processing unit is used to filter the observation signal, and use the filtered observation signal to perform interference cancellation on the antenna signal after interference cancellation again to obtain the signal of interest.

2. The array transceiver system according to claim 1, characterized in that: Each array module further comprises a first transmitting shaper, a second transmitting shaper, a first receiving shaper and a second receiving shaper; A first transmission shaper, configured to receive a signal to be transmitted from a digital processing unit and transmit the signal to be transmitted to a first channel; a second transmission shaper for receiving the cancellation signal from the digital processing unit and transmitting the cancellation signal to the first channel; a first receiving shaper, for receiving an observation signal from the second channel and transmitting the observation signal to a digital processing unit; The second receiving shaper is used to receive the antenna signal after interference cancellation from the second channel, and transmit the antenna signal after interference cancellation to the digital processing unit.

3. The array transceiver system according to claim 2, characterized in that: The first channel includes a digital up-converter, a digital-to-analog converter, an adjustable amplifier and a transmit filter connected in sequence; The digital up-converter is connected to the first transmission shaper or the second transmission shaper and is used to receive the signal to be transmitted or the cancellation signal; The signal to be transmitted or the cancellation signal passes through the digital-to-analog converter, the adjustable amplifier and the transmission filter in sequence; The transmitting filter is connected to the switch network and outputs the signal to be transmitted or the offset signal to the switch network.

4. The array transceiver system according to claim 2, characterized in that: The second channel includes an adjustable gain and attenuator, a receiving filter, an analog-to-digital converter and a digital down-converter connected in sequence; The adjustable gain and attenuator are connected to the switch network and are used to receive the observation signal or the antenna signal after interference cancellation from the switch network; The observation signal or the antenna signal after interference cancellation passes through the receiving filter, analog-to-digital converter and digital down converter in sequence; The digital down converter is connected to the first receiving shaper and the second receiving shaper, and transmits the observation signal or the antenna signal after interference cancellation to the first receiving shaper and the second receiving shaper.

5. The array transceiver system according to claim 1, characterized in that: The coupler includes a first input and output port, a second input and output port, and a coupling port; The first input / output port is connected to the antenna, the second input / output port is connected to the switch network, and the coupling port is connected to the switch network; In the transmission working mode, the second input / output port receives the signal to be transmitted from the switch network, the signal to be transmitted is transmitted from the first input / output port to the antenna, and the observation signal is output from the coupling port to the switch network.

6. The array transceiver system according to claim 5, characterized in that: In the receiving working mode, the coupling port receives the cancellation signal from the switch network, the first input-output port receives the antenna signal from the antenna, and the second input-output port outputs the antenna signal after interference cancellation to the switch network.

7. The array transceiver system according to claim 6, characterized in that: In the transmit mode of operation, the switch network connects the first channel to the second input-output port and simultaneously connects the second channel to the coupled port; In the receiving operation mode, the switch network connects the first channel to the coupling port and connects the second channel to the second input-output port.

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