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A novel full-duplex communication transmitter and receiver design method

A design method, full-duplex technology, applied in the direction of duplex signal operation, transmitter monitoring, receiver monitoring, etc., can solve problems such as interference signal, residual, and limit full-duplex system performance

Active Publication Date: 2019-04-30
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
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AI Technical Summary

Problems solved by technology

The phenomenon of interfering signal residuals due to channel estimation errors severely limits the performance of full-duplex systems

Method used

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  • A novel full-duplex communication transmitter and receiver design method
  • A novel full-duplex communication transmitter and receiver design method
  • A novel full-duplex communication transmitter and receiver design method

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Embodiment Construction

[0050] The present invention will be described in detail below in conjunction with the accompanying drawings and simulation examples, so that those skilled in the art can better understand the present invention.

[0051] figure 1 The system model of the present invention is shown. For a full-duplex system, the receiving antenna of the full-duplex system will receive not only the useful signal sent by the external transmitter, but also the self-interference signal sent by itself, and the total received signal model expressed as

[0052]

[0053] in, and They are the near-end interference signal and the far-end useful signal, and the modulation orders are M 1 and M 2 , and is the set of corresponding modulation constellation points. P 1 is the power of the self-interfering signal of the near-end full-duplex system, P 2 is the useful signal power sent by the remote external transmitter. h 0 is the channel response between the transmit antenna of the far-end exte...

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Abstract

The invention belongs to the technical field of wireless communication, and relates to a novel full duplex communication transmitter and receiver design method. The invention provides a signal detection method for directly clustering N signal points received by a receiving antenna of a full duplex system. Specifically, the received signal may form M1M2 clusters. And the corresponding relationshipbetween the signal cluster and the sending symbol combination is indicated through the mark symbol, so that the sending symbol is recovered. The signals received by the receiving antenna are directlyclustered, and the clustered signal clusters are marked by utilizing the sent mark symbols. According to the method provided by the invention, the detection performance of the full duplex system can be greatly improved, and complicated channel estimation and residual self-interference suppression steps of a digital domain are not needed.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a novel full-duplex communication transmitter and receiver design method. Background technique [0002] Although the same-frequency full-duplex communication system can double the utilization rate of spectrum resources, since the signal transmission and reception are carried out at the same frequency at the same time, the near-end receiving antenna will also receive the near-end useful signal while receiving the far-end useful signal. The transmitted self-jamming signal. In order to eliminate the influence of the residual self-interference signal in the digital domain, the traditional digital self-interference cancellation technology needs to accurately estimate the self-interference channel, and reconstruct the self-interference signal through the feedback signal and the estimated value of the self-interference channel, and then from the total received signal Subtr...

Claims

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Application Information

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IPC IPC(8): H04L5/14H04B17/20H04B17/10
CPCH04B17/10H04B17/20H04L5/14
Inventor 梁应敞陈杰张蔺
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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