Narrowband interference suppression in vector OFDM systems

ZHANG Guo-mei; ZHU Shi-hua

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Narrowband interference suppression in vector OFDM systems

更新时间：2024-10-14

- Narrowband interference suppression in vector OFDM systems
- Issue 1, Pages: 1-6(2008)
- 作者机构：
  
  1. 西安交通大学电子与信息工程学院
  2. 西安交通大学电子与信息工程学院,陕西,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN919.3
- Published：2008
- 稿件说明：
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ZHANG Guo-mei, ZHU Shi-hua. Narrowband interference suppression in vector OFDM systems[J]. 2008, (1): 1-6.
DOI：

ZHANG Guo-mei, ZHU Shi-hua. Narrowband interference suppression in vector OFDM systems[J]. 2008, (1): 1-6. DOI：

摘要

分析了窄带干扰对矢量正交频分复用(VOFDM)系统性能的影响

提出了一种VOFDM系统的窄带干扰抑制方法。该方法通过对接收矢量进行修正

把矢量子信道的接收转化为多载波码分多址(MC-CDMA)系统的接收检测问题

再采用最小均方误差合并技术实现窄带干扰抑制。性能分析及仿真结果表明

所建议的接收方法可有效提高系统对窄带干扰的顽健性

对于矢量长度为16的VOFDM

当信干比为15dB且误码率为10-2时

本方法相比于最小平方检测有约8dB的信噪比增益。

Abstract

The effect of narrowband interference on the performance of vector OFDM （VOFDM） was analyzed and a narrowband interference suppression method for VOFDM was proposed. By modifying the received vector sequences

the reception over vector channels in a VOFDM system was converted to the detection in a MC-CDMA system. Then the minimum mean-square error combining （MMSEC） technique was adopted to suppress the narrowband interference. Per- formance analysis and simulation results show that the proposed receive method can improve the system robustness to narrowband interference. When signal-interference-ratio （SIR） is 15dB and the target bit error rate is 10-2

the proposed method can obtain 8dB gain compared to the least square （LS） detection with the vector length being 16.

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