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Self-interference reconstruction device and method, and self-interference elimination equipment and method

A self-interference, polynomial coefficient technology, applied in the direction of shaping network, power management, electrical components, etc. in the transmitter/receiver, can solve the problems of inaccurate self-interference and inaccurate polynomial coefficients

Inactive Publication Date: 2015-02-04
HUAWEI TECH CO LTD
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Problems solved by technology

[0011] Embodiments of the present invention provide a device and method for reconstructing self-interference, and a device and method for eliminating self-interference, which are used to solve the problem that if the polynomial coefficients used for reconstructing self-interference are inaccurate when eliminating self-interference, the reconstructed The problem of inaccurate self-interference

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Embodiment Construction

[0120] Embodiments of the present invention provide a device and method for reconstructing self-interference, and a device and method for eliminating self-interference, which are used to solve the problem that if the polynomial coefficients used for reconstructing self-interference are inaccurate when eliminating self-interference, the reconstructed The problem of inaccurate self-interference.

[0121] The device for reconstructing self-interference provided by the embodiment of the present invention includes:

[0122] The polynomial coefficient update judgment circuit is used to judge whether the polynomial coefficient generation circuit needs to update the polynomial coefficient;

[0123] The polynomial coefficient generation circuit is connected with the polynomial coefficient update judgment circuit, and is used for updating the polynomial coefficient when the polynomial coefficient update judgment circuit determines that the polynomial coefficient needs to be updated;

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Abstract

The invention relates to the technical field of communication, particularly relates to a self-interference reconstruction device and method, and self-interference elimination equipment and method, and aims at solving a problem of inaccuracy of self-interference after reconstruction if multinomial coefficients used in reconstruction of self-interference in self-interference elimination are inaccurate. The self-interference reconstruction device provided by the embodiment of the invention comprises a multinomial coefficient updating decision circuit, a multinomial coefficient generating circuit which is connected with the multinomial coefficient updating decision circuit, and a nonlinear term generating circuit which is connected with the multinomial coefficient generating circuit. Whether the multinomial coefficient generating circuit needs to update coefficients of all orders of non-linear terms in multiple orders of nonlinear terms is judged by the multinomial coefficient updating decision circuit so that an opportunity suitable for updating the multinomial coefficients is confirmed, and the problem of inaccuracy of the multinomial coefficients after updating caused by the fact that the multinomial coefficients are updated at an inappropriate opportunity is avoided.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a device and method for reconfiguring self-interference, and a device and method for eliminating self-interference. Background technique [0002] In a communication system, the transmitted signal of a device may cause interference to the received signal, which is generally called self-interference. There are many situations that cause self-interference, such as: interference between different communication systems, interference between different frequency bands of the same communication system, and interference within the same frequency band. [0003] A scheme to eliminate self-interference figure 1 shown. figure 1 Among them, X is the uplink transmission signal, which is the baseband signal, Rx is the downlink expected reception signal, d is the self-interference generated by the uplink transmission signal X, N0 is white noise, and the uplink transmission signal...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03H04W52/24
Inventor 林亚
Owner HUAWEI TECH CO LTD
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