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Signal cancellation processing system and method based on autocorrelation model

A technology for processing systems and signal pairs, applied in baseband systems, baseband system components, transmission systems, etc., can solve problems such as self-interference, achieve high spectral efficiency, ensure accuracy, and overcome sudden interference effects

Active Publication Date: 2018-04-06
SICHUAN JIUZHOU ELECTRIC GROUP +1
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Problems solved by technology

[0003] In view of the above technical problems, the present invention provides a signal cancellation processing system based on an autocorrelation model to solve the problem of self-interference through a comprehensive and integrated design, and at the same time meet the requirements for simultaneous operation of receiving and transmitting

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  • Signal cancellation processing system and method based on autocorrelation model
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Embodiment 1

[0058] image 3 It is a structural block diagram of a signal cancellation processing system based on an autocorrelation model provided by the present invention. Such as image 3 As shown, the system is mainly composed of an iterative noise reduction channel estimation circuit 100 , a self-interference reconstruction circuit 200 and an adaptive interference cancellation circuit 300 . The iterative noise reduction channel estimation circuit 100 estimates the characteristic response of the channel model in the mixed received signal in the frequency domain, and outputs an estimated value of the channel response in the frequency domain; the self-interference reconstruction circuit 200 is connected to the iterative noise reduction channel estimation circuit 100. According to the local reference signal and the frequency domain channel response estimation value provided by the iterative noise reduction channel estimation circuit 100, perform frequency domain reconstruction of the sig...

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Abstract

The invention discloses a signal cancellation processing system and method based on an autocorrelation model. The system comprises an iterative noise reduction channel estimation circuit used for estimating characteristic response of a channel model in a mixed receiving signal on the frequency domain and outputting a frequency domain channel response estimated value; a self-interference reconstruction circuit connected with the iterative noise reduction channel estimation circuit and used for performing frequency domain reconstruction on the signal through a frequency unassociated reference method according to a local reference signal and the frequency domain channel response estimated value and outputting a frequency domain self-interference signal reconstruction value; and an adaptive interference cancellation circuit connected with the self-interference reconstruction circuit and used for performing autocorrelation eigenvector matching operation on the mixed receiving signal and thefrequency domain self-interference signal reconstruction value, and extracting a useful signal from the mixed receiving signal. According to the system and method, by adoption of the autocorrelationestimation of unassociated parameters of the signal features is accomplished by using the local reference signal and the mixed receiving signal, so that the noise can be effectively inhibited and theuseful signal is extracted.

Description

technical field [0001] The invention relates to the technical field of secondary radar signal detection and interference signal processing, in particular to a signal cancellation processing system and method based on an autocorrelation model. Background technique [0002] Radar signal detection and interference signal processing technology, with the continuous improvement of the radio frequency integration of electronic equipment, many functional items with the same and similar frequency bands have been integrated physically and logically. Technological innovation makes new equipment have the advantages of light size, low power consumption, and high cost performance. Therefore, integrated design technology has become an irresistible trend. While the comprehensive and integrated design brings performance advantages to new equipment, it also creates some new problems, especially the problem of self-interference. The original distributed equipment uses independent equipment in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03H04L25/02
CPCH04L25/022H04L25/03063H04L25/03159H04L25/03821
Inventor 陈志陈亚莎张洪波汪毅
Owner SICHUAN JIUZHOU ELECTRIC GROUP
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