Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (6): 42-46.doi: 10.3969/j.issn.1000-565X.2013.06.008

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Interference Suppression for Multi- Cell Multi- User MIMO Systems

Gu Jun1 Zhong Yuan- hong1 Zhang Zhen- yu2 Zeng Fan- xin1   

  1. 1.College of Communication Engineering,Chongqing University,Chongqing 400044,China;2.Department of Information Engineering,Chongqing Communication Institute,Chongqing 400035,China
  • Received:2012-09-24 Revised:2012-12-10 Online:2013-06-25 Published:2013-05-03
  • Contact: 顾军(1976-)，男，博士生，主要从事无线移动宽带通信网研究． E-mail:haroldmail@126.com
  • About author:顾军(1976-)，男，博士生，主要从事无线移动宽带通信网研究．
  • Supported by:

    国家自然科学基金资助项目(60872164， 61272043)

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Abstract:

 In order to mitigate the out- of- cell and the intra- cell interferences in the cell- edge users in downlink multi- cell multi- user MIMO (Multiple- Input Multiple- Output) systems where each base station has multiple trans-mitting antennas and each mobile user has multiple receiving antennas,two interference suppression techniques respectively based on the block diagonalization and the minimum mean- squared error algorithms are proposed,and the numbers of transmitting antennas and receiving antennas affected by user number and cell number are analyzed.Simulated results indicate that the two techniques both greatly improve the spectral efficiency of cell- edge users.

Key words: MIMO systems, cellular network, beamforming, interference suppression

CLC Number: