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Method, device and system for acquiring useful signal in full-duplex communication

A useful signal, full-duplex technology, applied in the field of communication, can solve the problems of flexibility, insufficient effectiveness, and insufficient flexibility and effectiveness of useful signal acquisition methods, so as to achieve the effect of improving flexibility

Active Publication Date: 2013-12-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide a method and device for acquiring useful signals in full-duplex communication, and a full-duplex communication system, aiming to solve the problems caused by the lack of flexibility and effectiveness of the existing self-interference signal deletion technology. The signal acquisition method is not flexible enough and effective

Method used

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  • Method, device and system for acquiring useful signal in full-duplex communication
  • Method, device and system for acquiring useful signal in full-duplex communication
  • Method, device and system for acquiring useful signal in full-duplex communication

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Embodiment 1

[0024] figure 2 The implementation flow of the method for acquiring useful signals in full-duplex communication provided by the first embodiment of the present invention is shown, and the details are as follows:

[0025] In step S201, according to the self-interference channel matrix between the local transmit antenna and the local receive antenna in full-duplex communication, the basis vector and dimension of the null space of the self-interference channel matrix are obtained.

[0026] In the process of full-duplex communication, assuming that the full-duplex signal machine is pre-set with n fundamental transmitting antennas and r fundamental receiving antennas, then the dimension of the self-interference channel matrix Jr(t) from the local transmitting antennas to the local receiving antennas is r*n, and Jr(t) also represents the channel response matrix function from the transmitting antenna to the receiving antenna, and the element in the i-th row and column j in the Jr(t)...

Embodiment 2

[0050] image 3 The structure of the device for obtaining useful signals in full-duplex communication provided by the second embodiment of the present invention is shown, and for the convenience of description, only the parts related to the embodiment of the present invention are shown.

[0051] The acquisition device of the useful signal in the full-duplex communication can be in a full-duplex communication system, and the acquisition device of the useful signal in the full-duplex communication includes a zero space information acquisition unit 31, a data stream acquisition unit 32 and a useful signal acquisition unit 33, in:

[0052] The null space dimension acquisition unit 31 is configured to acquire the basis vector and dimension of the null space of the self-interference channel matrix according to the self-interference channel matrix between the local transmit antenna and the local receive antenna in full-duplex communication.

[0053] In a full-duplex communication sy...

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Abstract

The invention is applicable to the technical field of communication and provides a method and a device for acquiring a useful signal in full-duplex communication and a full-duplex communication system. The method comprises the following steps: acquiring a base vector and the number of dimensions of a null space of a self-interference channel matrix according to the self-interference channel matrix between a local transmitting antenna and a local receiving antenna in full-duplex communication; acquiring transmitting data flow transmitted in the null space of the self-interference channel matrix and the number of transmitting data flows transmitted in a row vector space of the self-interference channel matrix according to the base vector and the number of dimensions of the null space as well as channel condition and service information; and acquiring a locally-received useful signal according to the transmitting data flow transmitted in the null space of the self-interference channel matrix, a transmission pre-coding matrix function and the self-interference channel matrix when the number of the transmitting data flows transmitted in the row vector space of the self-interference channel matrix is not equal to 0, thereby achieving the purpose of acquiring a useful signal more flexibly.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a method, device and system for acquiring useful signals in full-duplex communication. Background technique [0002] In an operator's mobile network, a base station communicates with multiple user terminals within the coverage area. The communication between the base station and the terminal is bidirectional. The process of the base station sending a signal to the terminal is called downlink communication, and the process of the terminal sending a signal to the base station is called uplink communication. Full-duplex technology realizes simultaneous uplink and downlink transmission on the same time-frequency resources, and its spectral efficiency is twice that of simplex and half-duplex. The transmission and reception of the existing full-duplex technology transceiver still use different antennas and radio frequency channels, because there is no experimental pr...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/08H04B15/00
CPCH04L25/03898H04B1/525H04B7/0413H04B7/0617H04L25/03343
Inventor 程宏刘晟杜颖钢
Owner HUAWEI TECH CO LTD
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