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Interference reconstruction rejection combining method of multi-reception antenna

An interference reconstruction, multi-reception technology, applied in diversity/multi-antenna system, shaping network in transmitter/receiver, space transmit diversity and other directions, can solve the problems of inaccurate covariance matrix estimation and performance impact, and achieve accurate The effect of high degree and excellent performance

Inactive Publication Date: 2013-01-30
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

This traditional method uses approximate processing, resulting in inaccurate estimation of the covariance matrix and performance impact

Method used

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  • Interference reconstruction rejection combining method of multi-reception antenna
  • Interference reconstruction rejection combining method of multi-reception antenna
  • Interference reconstruction rejection combining method of multi-reception antenna

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] figure 1 It is a schematic structural diagram of a typical multi-receiving antenna receiver of the present invention, and the device includes: a channel fading coefficient module 11 , a module 12 for reconstructing interference and noise signals, a module 13 for generating weight vector II, and a module 14 for restoring desired signals.

[0024] figure 2 For interference and noise signal reconstruction detailed structural diagram of the present invention, i.e. the detailed structural diagram of module 12, this device comprises: channel fading coefficient module 11, generation weight value vector I module 21, roughly estimate expected signal module 22, demodulation module 23 , the modulation module 24 , and the desired signal removal module 25 .

[0025] Considering that the LTE uplink communication link is interfered by WiFi signals,...

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Abstract

The invention provides an interference reconstruction rejection combining method of a multi-reception antenna. In consideration of the mobile communication of the multi-reception antenna, the invention provides a new multi-antenna combining method, namely, interference reconstruction rejection combining (IRRC). The method comprises the following steps: firstly, estimating an expecting signal from a receiving signal which is not modulated and contains interference and noise by a tradition method, and modulating and demodulating to obtain the estimating value of the expecting signal with the noise removed; ejecting an expecting signal from the receiving signal to obtain reconstructed interference signals; and finally, calculating the weight required by the expecting signal by using covariance matrix of the interference signal to recover the expecting signal. In comparison with the traditional interference rejection combining method using signal approximate interference and noise signal, the method is more accurate, so that the recovered expecting signal has high accuracy and excellent performance.

Description

technical field [0001] The invention belongs to the field of multi-receiving antenna communication systems, and relates to interference reconstruction suppression combining technology. Background technique [0002] In a communication scenario with multiple receiving antennas, although Equal Gain Combining (EGC) and Maximum Ratio Combining (MRC) can use antenna diversity to combat multipath channel fading, neither of them considers multi-antenna reception signals. Interference correlation. The Interference Rejection Combing (IRC, Interference Rejection Combing) method of multiple receiving antennas uses the correlation of interference between receiving antennas to perform interference suppression and combining. [0003] In the traditional interference suppression combining method, the covariance matrix of the received signal Y is firstly approximated as the estimated value of the covariance matrix of the interference noise u, that is, R u ≈E(YY H ), and then obtain the wei...

Claims

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Application Information

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IPC IPC(8): H04B7/08H04L25/03
Inventor 于辉越赵宏志符初生唐友喜
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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