Suppressed inter-cell asynchronous interference by delay-tolerance SLNR precoding

Authors:
Pinlian Zheng;Xianzhong Xie;Gang Qu
Affiliations:
Institute of Personal Communication, MIl Key Lab on Computer Network and Communication, Chongqing University of Posts and Telecommunications, Chongqing, P.R. China;Institute of Personal Communication, MIl Key Lab on Computer Network and Communication, Chongqing University of Posts and Telecommunications, Chongqing, P.R. China;Institute of Personal Communication, MIl Key Lab on Computer Network and Communication, Chongqing University of Posts and Telecommunications, Chongqing, P.R. China
Venue:
ICACT'10 Proceedings of the 12th international conference on Advanced communication technology
Year:
2010

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Abstract

The different propagation times due to the distinct distance between the BSs and MSs result in inter-cell asynchronous interference, which severely destroy system performance. How to mitigate inter-cell asynchronous interference by making use of SLNR precoding is the key to this paper. Firstly, a framework of Cooperative Base Station Systems (Co-BS) was developed and the delay between the cells was analysed. Secondly, a delay-tolerance SLNR precoding was brought forward, in LTE system which exist delay, to suppress inter-cell asynchronous interference. And this method can also reduce the complication of terminal. Finally, the numerical delay-tolerance SLNR precoding simulation results are presented based on Cooperative Base Station LTE Systems, the conclusions show that it can mitigate inter-cell asynchronous interference. And the method can reach a good performance under different antenna configuration, which make performance progress compare with receive algorithm. Besides, the performance is affected by channel estimation error, but it can still be accepted.