Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2011, Vol. 34 ›› Issue (1): 85-89.doi: 10.13190/jbupt.201101.85.gaoxch

• Papers • Previous Articles     Next Articles

GEVD Aided MMSE Interference Suppression for theDownlink of MultiUser MIMO System

Xiang-Chuan GAO   

  • Received:2010-02-04 Revised:2010-07-20 Online:2011-02-28 Published:2011-02-28
  • Contact: Xiang-Chuan GAO E-mail:gaoxiangchuan@mail.wtilabs.cn

Abstract:

A general eigenvalues decomposition (GEVD) aided interference suppression algorithm is proposed based on the minimum meansquared error (MMSE) criterion to improve the precoding gain of multiuser in multiuser multiinput multioutput (MIMO) system. It suppresses the interference and noise, meanwhile, the users precoding gain is taken into account at the same time. The algorithm can maximize the signaltoleakageandnoiseratio at the transmitter and maximize the signalto interference andnoiseratio of each user’s receiver. And how to modify the design in order to account for channel estimation errors is also analyzed. Simulation shows that the algorithm can achieve a better system performance than the general MMSE invension algorithm.

Key words: cochannel interference, multiuser multiinput multioutput, general eigenvalues decomposition, signal to leakage and noise ratio

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