[1]张晴川,束锋,孙锦涛.一种逼近最大似然的高效球形译码算法[J].南京理工大学学报(自然科学版),2010,(02):197-202.
 ZHANG Qing-chuan,SHU Feng,SUN Jin-tao.Efficient Sphere Decoding Algorithm with Approximate Maximum-likelihood Performance[J].Journal of Nanjing University of Science and Technology,2010,(02):197-202.
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一种逼近最大似然的高效球形译码算法
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2010年02期
页码:
197-202
栏目:
出版日期:
2010-04-30

文章信息/Info

Title:
Efficient Sphere Decoding Algorithm with Approximate Maximum-likelihood Performance
作者:
张晴川 束锋 孙锦涛
南京理工大学电子工程与光电技术学院, 江苏南京210094
Author(s):
ZHANG Qing-chuanSHU FengSUN Jin-tao
School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094,China
关键词:
无线通信 多天线系统 最大似然检测 球形译码
Keywords:
wireless communication multi-antenna system maximum-likelihood detection sphere decoding
分类号:
TN92
摘要:
基于球形译码算法的树状搜索结构,提出了一种用于无线通信多天线系统逼近最大似然检测性能的高效检测算法。通过设定扩张阈值,使处于搜索树底部的节点优先扩张,减少了搜索过程中的扩张节点数。根据误码性能分析,给出了一种简单的扩张阈值选取方法。仿真结果表明,该算法的计算复杂度明显低于传统的球形译码算法,且性能损失很小。同时,可调节的参数使该算法能够提供很好的性能-复杂度的折中。
Abstract:
Based on the tree search structure of sphere decoder,an efficient detection algorithm,which can approach the performance of maximum-likelihood detection in the multi-antenna system of wireless communication,is proposed.This paper makes the nodes in the bottom of the search tree expand preferentially through inducing the expanding threshold and reduces the number of visited nodes in the search process.The error performance is analyzed and a simple method to determine the expanding threshold is given.The simulation results show the proposed algorithm has much lower computational complexity compared with the conventional sphere decoding methods,only at the price of slightly increasing error probability.With the regulable parameter,it can provide an excellent tradeoff between performance and complexity.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 张晴川( 1981- ) , 男, 博士生, 主要研究方向: 无线通信中的信号处理、协作通信, E-mail: sch iller_chang @ hotm ai.l com; 通讯作者: 孙锦涛( 1942- ), 男, 教授, 博士生导师, 主要研究方向: 现代通信理论、雷达 信号处理等, E-mail: jtsun-n@j y ahoo. com. cn。
更新日期/Last Update: 2010-04-30