Interference Cancellation Based on Interference Alignment for Multiuser Full-Duplex Communications

doi:10.13190/j.jbupt.2015.06.018

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2015, Vol. 38 ›› Issue (6): 87-92.doi: 10.13190/j.jbupt.2015.06.018

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Interference Cancellation Based on Interference Alignment for Multiuser Full-Duplex Communications

XIE Xian-zhong, WANG Chuang, ZHANG Sen-lin, GE Zhen-tao

Institute of Personal Communication, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Received:2014-11-22 Online:2015-12-28 Published:2015-12-01

Abstract

Abstract:

There exist self-interference and mutual interference in multiuser full-duplex system. The interference alignment technique (IA) is applied to eliminate both self-interference and mutual interference in multiuser full-duplex communication. According to the characteristics of the multiuser full-duplex system, it is treated as a one-way channel model and the channel matrix of the corresponding relationship between the equivalent model and the original model is given. Based on this thoughtfulness, the minimum interference leakage alignment (Min-IL) and the maximum signal to interference plus noise ratio algorithm (Max-SINR) were presented to eliminate both self-interference and mutual interference in multiuser full-duplex communications. Simulation proves that the proposed algorithms are effective. Comparing with other schemes, both the system capacity and the average energy efficiency are improved obviously by the proposed schemes.

Key words: multiuser full-duplex interference channel, interference alignment, maximum signal to interference plus noise ratio, capacity, average energy efficiency

CLC Number:

TN929.53

XIE Xian-zhong, WANG Chuang, ZHANG Sen-lin, GE Zhen-tao. Interference Cancellation Based on Interference Alignment for Multiuser Full-Duplex Communications[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2015, 38(6): 87-92.

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Interference Cancellation Based on Interference Alignment for Multiuser Full-Duplex Communications

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