An Iterative MLD Scheme for Directional Interference Suppression in MIMO System

WANG Jie; CHEN Xiao-xu; GONG Yao-huan

您当前的位置：

首页 >

文章列表页 >

An Iterative MLD Scheme for Directional Interference Suppression in MIMO System

更新时间：2025-07-16

- An Iterative MLD Scheme for Directional Interference Suppression in MIMO System
- Acta Electronica Sinica Vol. 39, Issue 9, Pages: 2108-2113(2011)
- 作者机构：
  
  1. 电子科技大学电子工程学院,四川,成都,611731
  2. 中国西南电子设备研究所,四川,成都,610036
  3. 电子科技大学电子工程学院四川成都,611731
  4. 中国西南电子设备研究所四川成都,610036
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN91
- Published：2011
- 稿件说明：
移动端阅览
WANG Jie, CHEN Xiao-xu, GONG Yao-huan. An Iterative MLD Scheme for Directional Interference Suppression in MIMO System[J]. Acta Electronica Sinica, 2011, 39(9): 2108-2113.
DOI：

WANG Jie, CHEN Xiao-xu, GONG Yao-huan. An Iterative MLD Scheme for Directional Interference Suppression in MIMO System[J]. Acta Electronica Sinica, 2011, 39(9): 2108-2113. DOI：

摘要

收发多天线(Multiple Input Multiple Output

MIMO)空时分组编码(Space-Time Block Codes

STBC)系统中存在定向干扰

特别是军用通信环境下存在强定向干扰时

需进行有效的干扰抑制以避免性能恶化.本文提出了一种迭代最大似然解码(Maximum-Likelihood Decoding

MLD)方案.该方案通过噪声子空间投影实现了强干扰下的有效信道估计

利用等效信道矩阵的估计值代替真实信道矩阵的估计值实现干扰抑制和解码;并在似然函数中引入了信道估计误差以减小其对解码性能的不良影响

通过迭代累积代价函数的增量

实现了按分组进行解码

大大减少了搜索计算量.仿真结果表明该方案可有效抑制干扰

且其性能对导频长度的变化不敏感

更具适用性.

Abstract

For multiple input multiple output (MIMO) system using space-time block codes (STBC) with directional interferences

especially with strong directional interferences in military communication scenario

effective interference suppression is necessary to avoid system performance degradation.An iterative maximum-likelihood decoding (MLD) scheme is presented.The proposed scheme estimates equivalent channel matrix instead of real channel matrix to perform interference suppression and decoding through noise subspace projection;reduces bad effect of channel estimation error on decoding performance

and realizes MLD of STBC block by block instead of frame by frame with less searching calculations by accumulating the increment of cost function iteratively.Simulation results show that the proposed scheme is valid to suppress interference and less sensitive to the length of pilot symbols

which is more flexible in practical applications.

关键词

Keywords

references

Views

1306

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

DME Interference Suppression Based on Local Robust Preprocessing

FMCW Radar Signal DOA Estimation Method Based on the Third-Order Cross Cumulant Under High Interference

Active Jamming Suppression for SAR Images Based on Self-Supervised Complex-Valued Deep Learning

The Optimum Interference Suppression Technique Based on Kalman Filtering for Spread Spectrum Systems

UWB Adaptive Pulse Design Based on Polycycle Signal for Interference Suppression

Related Author

ZHOU Yue-ying

JIA Qiong-qiong

WANG Si-qi

MA Xin-xin

XIA Nan

HUA Qing-long

WEI Chen-xi

ZHANG Yun

Related Institution

Tianjin Key Laboratory for Advanced Signal Processing, Civil Aviation University of China

School of Information Science and Engineering， Dalian Polytechnic University

School of Electronics and Information Engineering, Harbin Institute of Technology

Beijing Research Institute of Systems EngineeringBeijing 100101China

Beijing Global Information CenterBeijing 100094China

⁰