Multi-Relay Transmission Mechanism Based on Interference Alignment and Beamforming

doi:10.13190/jbupt.201303.51.leiwj

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2013, Vol. 36 ›› Issue (3): 49-53.doi: 10.13190/jbupt.201303.51.leiwj

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Multi-Relay Transmission Mechanism Based on Interference Alignment and Beamforming

LEI Wei-jia, SHI Zhao-yuan, XIE Xian-zhong, LU Hua-bing

Chongqing Key Laboratory of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Received:2012-06-20 Online:2013-06-30 Published:2013-06-30

Abstract

Abstract:

For the multi-relay two-hop multiple input multiple output system, a kind of relay transmission scheme and interference alignment algorithm is put forward. Firstly, the transmitting beamforming is adopted by the scheme between sources and relays to utilize the spectrum efficiently. Then the relays forward the signals using interference alignment technology. Finally, the interference is eliminated at the ends with a low computation interference eliminate algorithm. Simulations show that the transmission scheme can achieve better system capacity and energy efficiency.

Key words: relay selection, beamforming, interference alignment, multiple input multiple output

CLC Number:

TN929.53

LEI Wei-jia, SHI Zhao-yuan, XIE Xian-zhong, LU Hua-bing. Multi-Relay Transmission Mechanism Based on Interference Alignment and Beamforming[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2013, 36(3): 49-53.

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Multi-Relay Transmission Mechanism Based on Interference Alignment and Beamforming

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