Adaptive co-site interference cancellation algorithm with multiple virtual references

Yue-lei XIE; Jie LIU; Min-zheng LI; Shan OUYANG; Gui-sheng LIAO

doi:10.11959/j.issn.1000-436x.2015122

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Adaptive co-site interference cancellation algorithm with multiple virtual references

academic paper | 更新时间：2024-06-05

- Adaptive co-site interference cancellation algorithm with multiple virtual references
- Journal on Communications Vol. 36, Issue 4, Pages: 52-57(2015)
- 作者机构：
  
  1. 桂林电子科技大学信息与通信学院，广西桂林 541004
  2. 西安电子科技大学雷达信号处理国家重点实验室，陕西西安 710071
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61362007);The National Natural Science Foundation of China(61461015);The Natural Science Foundation of Guangxi Province(2013GXNSFFA019004);Guangxi Key Lab of Wireless Wideband Communication &Signal Processing Foundation(12107)
- DOI：10.11959/j.issn.1000-436x.2015122
  CLC： TN911.4
- Online First：2015-04，
  
  Published：25 April 2015
- 稿件说明：
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Yue-lei XIE, Jie LIU, Min-zheng LI, et al. Adaptive co-site interference cancellation algorithm with multiple virtual references[J]. Journal on Communications, 2015, 36(4): 52-57.
DOI：

Yue-lei XIE, Jie LIU, Min-zheng LI, et al. Adaptive co-site interference cancellation algorithm with multiple virtual references[J]. Journal on Communications, 2015, 36(4): 52-57. DOI： 10.11959/j.issn.1000-436x.2015122.

摘要

针对同一空间内相邻发射机对接收机产生的同址干扰，将接收信号过采样后虚拟出多路参考信号并与两级自适应滤波器相结合，构成了一种虚拟多参考输入自适应同址干扰抵消算法。通过在接收纯干扰信号阶段调整第一阶滤波器的权系数，接收信号中包含有用信号时调整第二阶滤波器的系数，实现消除同址干扰恢复有用信号的功能。仿真结果表明，所提同址干扰抵消算法与传统算法相比，在简化了耦合装置的同时，也具有更好的同址干扰抑制效果。

Abstract

Wireless radio communication is usually deteriorated by co-site interferences produced by collocated transmitters.A two-stage adaptive filter with multiple virtual references that drew from over sampled receiving signal is proposed to cancel the co-site interferences.Co-site interferences can be cancelled and the desired signal can be recovered by adjusting the weights of the first filter when pure interferences are received and adjusting the weights of the second filter when the desired signal is consisted in received signals.The simulation results show that the proposed adaptive co-site interferences cancellation algorithm without the coupling device can achieve better performance than traditional algorithms.

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references

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