Adaptive Cancellation of Self-Interference in Full-Duplex Wireless with Transmitter IQ Imbalance

被引：0
|
作者：
Sakai, Manabu [1 ]
Lin, Hai [1 ]
Yamashita, Katsumi [1 ]
机构：
[1] Osaka Prefecture Univ, Grad Sch Engn, Osaka 5998531, Japan
来源：
2014 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM 2014) | 2014年
关键词：
D O I：
暂无
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
The cancellation of in-band self-interference caused by simultaneous transmission and reception is an essential issue to realize full-duplex wireless communication. In this paper, we investigate the impact of transmitter IQ imbalance on self-interference cancellation. From our results, it is shown that the residual self-interference in the presence of transmitter IQ imbalance has considerably large power. To cancel it, a baseband cancellation signal generated by widely linear (WL) filtering is proposed and the optimal WL filters are derived. For practical implementation, we also propose an adaptive algorithm based on the augmented complex least mean square method to directly obtain the WL filters. Simulation results demonstrate the validity of the proposed algorithm.
引用
收藏
页码：3220 / 3224
页数：5
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