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Intelligent terminal based on high-speed full-duplex transceiving base station

A technology of intelligent terminal and transceiver base station, applied in the field of communication, can solve the problem of high cost, and achieve the effect of improving the utilization rate of wireless spectrum and reducing cost

Inactive Publication Date: 2019-10-22
QINGYUAN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This self-interference cancellation method has certain beneficial effects, but its cost is relatively higher, and the non-linear self-interference cancellation method and its related equipment that have both effective effects and low cost still need to be explored.

Method used

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  • Intelligent terminal based on high-speed full-duplex transceiving base station
  • Intelligent terminal based on high-speed full-duplex transceiving base station
  • Intelligent terminal based on high-speed full-duplex transceiving base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] An intelligent terminal based on a high-speed full-duplex transceiver base station, including a central processing unit and a radio frequency transmitting receiver, and also includes a processing module, a transmitting module, a receiving module and an antenna module, wherein the transmitting module is used to control the transmission of local signals , and introduce the local signal to the processing module; the receiving module is used to control the reception of the analog receiving signal, and synthesize the analog receiving signal and the self-interference cancellation signal output by the processing module to obtain the self-interference cancellation remote signal, and transmit the remote signal to the receiving end; the processing module is used to process the self-interference caused by the local signal transmission to the remote signal reception, and extract the analog self-interference cancellation signal and digital Self-interference cancellation signal, and g...

Embodiment 2

[0071] An intelligent terminal based on a high-speed full-duplex transceiver base station, including a central processing unit and a radio frequency transmitting receiver, and also includes a processing module, a transmitting module, a receiving module and an antenna module, wherein the transmitting module is used to control the transmission of local signals , and introduce the local signal to the processing module; the receiving module is used to control the reception of the analog receiving signal, and synthesize the analog receiving signal and the self-interference cancellation signal output by the processing module to obtain the self-interference cancellation remote signal, and transmit the remote signal to the receiving end; the processing module is used to process the self-interference caused by the local signal transmission to the remote signal reception, and extract the analog self-interference cancellation signal and digital Self-interference cancellation signal, and g...

Embodiment 3

[0151] Based on the fact that this embodiment is basically the same as Embodiment 2, the difference is that in practical applications, the method of estimating the maximum likelihood value of the coefficient β can also be:

[0152] by h u and h v It can be seen from the definition that

[0153] h u =βh v (20)

[0154] Therefore, the maximum likelihood estimate of β is:

[0155]

[0156] In summary, a nonlinear feedback-assisted full-duplex digital self-interference cancellation method disclosed in the present invention has technical effects including: 1. By eliminating the dominant linear part in the feedback signal, the feedback channel The analog-to-digital converter mainly expresses the nonlinear part, so it is not necessary to use a high-precision analog-to-digital converter, which reduces the overall cost; 2. By eliminating the full-duplex digital self-interference of nonlinear feedback, the same time and the same frequency band The full-duplex communication mod...

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Abstract

An intelligent terminal based on a high-speed full-duplex transceiving base station comprises a central processing unit and a radio frequency transceiver. A transmitting module is used for controllingthe transmission of a local signal and introducing the local signal into a processing module. The receiving module is used for controlling to receive an analog receiving signal, synthesizing the analog receiving signal with the self-interference elimination signal output by the processing module to obtain a far-end signal after self-interference elimination, and transmitting the far-end signal toa receiving end. The processing module is used for processing the self-interference caused by the local signal emission to the far-end signal reception, extracting an analog self-interference elimination signal and a digital self-interference elimination signal, and giving the signals to the receiving module for self-interference elimination operation. According to the terminal, the dominant linear part in the feedback signal is eliminated, so that the analog-to-digital converter in the feedback channel mainly expresses the nonlinear part, a high-precision analog-to-digital converter is not used, and the overall cost is reduced.

Description

technical field [0001] The present invention relates to the communication field, in particular to an intelligent terminal based on a high-speed full-duplex transceiver base station. Background technique [0002] The full-duplex transceiver channels work in the same frequency band at the same time. Today, as spectrum resources are increasingly exhausted, full-duplex has a huge appeal that can theoretically double the spectral efficiency of wireless communication. In engineering applications, full-duplex wireless communication is faced with the problem of self-interference caused by local transmission signals to the receiving channel, and it is necessary to jointly use two or more self-interference cancellation technologies in the antenna domain, analog domain, and digital domain to restrain it. Digital self-interference cancellation is the last necessary elimination method, and the remaining self-interference will be the final residual self-interference, so the impact on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/525H04B1/00H04B1/12H04L25/03H04L25/49
CPCH04B1/0028H04B1/12H04B1/525H04L25/0328H04L25/49
Inventor 张志亮刘英王小红罗芳
Owner QINGYUAN POLYTECHNIC
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