| 一种新的次优多用户检测器 |
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| 引用本文： | 许良凤.一种新的次优多用户检测器[J].合肥工业大学学报(自然科学版),2005,28(11):1381-1383. |
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| 作者姓名： | 许良凤 |
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| 作者单位： | 合肥工业大学,计算机与信息学院,安徽,合肥,230009 |
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| 摘 要： | 针对码分多址接入(CDM A)系统中最优多用户检测的指数计算复杂度问题,从组合优化的角度提出了一种基于改进遗传算法的多用户检测;这种方法通过增加种群的多样性,可避免单纯使用遗传算法时收敛速度慢、易于出现早熟收敛等缺点;计算机仿真结果表明,该检测器的比特误码性能接近最佳检测器。
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| 关 键 词： | 码分多址 多用户检测 遗传算法 |
| 文章编号： | 1003-5060(2005)11-1381-03 |
| 修稿时间： | 2004年12月10 |
A new suboptimum multiuser detector |
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| XU Liang-feng.A new suboptimum multiuser detector[J].Journal of Hefei University of Technology(Natural Science),2005,28(11):1381-1383. |
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| Authors: | XU Liang-feng |
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| Abstract: | In view of the exponential computation complexity of the optimal multiuser detection in CDMA systems,a multiuser detector which employs an improved genetic algorithm is proposed from a combinatorial optimization viewpoint.The slow convergence rate and premature convergence of the pure genetic algorithm are avoided by means of increasing the race individuals.The computer simulation results show that the performance of the designed detector approaches that of the optimal multiuser detector and the computation complexity is reduced. |
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| Keywords: | code division multiple access(CDMA) multi-user detection genetic algorithm |
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