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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This traditional method uses approximate processing, resulting in i

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

[0023] figure 1 It is a schematic diagram of the structure of a typical multi-receiving antenna receiver of the present invention. The device includes: a channel fading coefficient module 11, an interference and noise signal reconstruction module 12, a weight vector II generating module 13, and a desired signal recovery module 14.

[0024] figure 2 It is a detailed structure diagram of the interference and noise signal reconstruction of the present invention, that is, the detailed structure diagram of the module 12. The device includes: a channel fading coefficient module 11, a weight vector generation module 21, a rough estimation of the expected signal module 22, and a demodulation module 23 , Modulation module 24, eliminates expected signal module 25.

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

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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...

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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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