Nonzero bandwidth performance and time delay matching of interference cancellation system

被引：4

作者：

Jiang, Yun-Hao ^{[1
]}

Chen, Wei-Feng ^{[1
]}

Zhong, Shui-Ming ^{[2
]}

Jia, Hong-Yun ^{[1
]}

Cao, Yong-Juan ^{[1
]}

Mao, Peng ^{[1
]}

机构：

[1] School of Information and Control, Nanjing University of Information Science & Technology, Nanjing

[2] School of Computer Science and Techology, Nanjing University of Information Science & Technology, Nanjing

来源：

Tongxin Xuebao/Journal on Communications | 2014年 / 35卷 / 07期

关键词：

Communication theory; Interference cancellation ratio; Interference cancellation system; Nonzero bandwidth; Time delay matching; Weight;

D O I：

10.3969/j.issn.1000-436x.2014.07.014

中图分类号：

学科分类号：

摘要：

The frequency-domain and time-domain characteristics of adaptive interference cancellation system were analyzed, when interference signal had nonzero bandwidth. The nonzero bandwidth interference signal made the system a time-variation system. When the bandwidth was far less than the center frequency, the interference cancellation system could be approximated as an adaptive comb filter. The average convergence speed of the system was proportional to the overall reference signal gain, and the interference cancellation ratio (ICR) decreased with the increase of the bandwidth. The theoretical and simulation analyses of couple time delay matching reveal that the precise time delay matching can improve ICR significantly.

引用

页码：113 / 121

页数：8

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