| 基于硬判决的多用户检测遗传算法改进 |
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| 引用本文： | 陈建玲,覃团发,黄海星.基于硬判决的多用户检测遗传算法改进[J].广西科学院学报,2005,21(3):173-176. |
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| 作者姓名： | 陈建玲 覃团发 黄海星 |
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| 作者单位： | 广西大学计算机与电子信息学院,广西,南宁,530004;广西大学计算机与电子信息学院,广西,南宁,530004;广西大学计算机与电子信息学院,广西,南宁,530004 |
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| 基金项目： | 广西“新世纪十百千人才工程”专项资金（批准号：2002222号）和广西高校百名中青年学科带头人项目（桂教人[2002]467号）资助. |
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| 摘 要： | 针对多用户检测中基于遗传算法的种群初始化不足，充分利用有用的边信息，结合传统匹配滤波器的硬判决，提出一种更为合理的种群个体初始化结构，改进了异步CDMA系统中多用户检测的遗传算法。仿真结果表明．改进后的种群个体初始化结构减少算法早熟收敛带来的影响，使搜索能更快地向最优解靠近，弥补了简单遗传算法自身的盲目性，加速了算法的收敛速度，实现了异步系统下高效、快速的多用户检测．
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| 关 键 词： | 遗传算法 码分多址 多用户检测 硬判决 快速收敛 |
| 文章编号： | 1002-7378（2005）03-0173-04 |
| 收稿时间： | 2004-12-28 |
| 修稿时间： | 2004年12月28 |
Improvement of Genetic Algorithm of Multiuser Detection Based on Hard Decision |
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| Chen Jianling,Qin Tuanfa and Huang Haixing.Improvement of Genetic Algorithm of Multiuser Detection Based on Hard Decision[J].Journal of Guangxi Academy of Sciences,2005,21(3):173-176. |
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| Authors: | Chen Jianling Qin Tuanfa and Huang Haixing |
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| Institution: | Coll. of Comp. & Elec. Info., Guangxi Univ., Nanning, Guangxi, 530004, China,Coll. of Comp. & Elec. Info., Guangxi Univ., Nanning, Guangxi, 530004, China and Coll. of Comp. & Elec. Info., Guangxi Univ., Nanning, Guangxi, 530004, China |
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| Abstract: | A more reasonable initialization structure for improving genetic-algorithm-based multiuser detection is proposed. The simulation results show that the improved initialization structure can reduce the impact of premature convergence. At the same time,it makes full use of the useful edge information and combines the hard decision taken from traditional matched filters. It overcomes the blindness of simple genetic algorithm, and makes the searching quickly close to the optimal solution,and improves the convergence rate. |
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| Keywords: | genetic algorithm code-division multiple access multiuser detection hard decision quickly convergent |
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