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| 一种改进的变步长LMS盲多用户检测算法 | |
| 引用本文： | 井敏英,李国民,魏丁武. 一种改进的变步长LMS盲多用户检测算法[J]. 通信技术, 2009, 42(7): 13-14 |
| 作者姓名： | 井敏英 李国民 魏丁武 |
| 作者单位： | 1. 西安科技大学,通信与信息工程学院,陕西,西安,710054;陕西理工学院,物理系,陕西,汉中,723001 2. 西安科技大学,通信与信息工程学院,陕西,西安,710054 3. 中国人民解放军68054部队,陕西,西安,710061 |
| 摘 要： | 盲多用户检测技术是第三代移动通信的关键技术，文中分析了DS-CDMA通信系统中LMS盲多用户检测算法的性能。并在此基础上对其进行改进，提出一种改进的变步长的LMS盲多用户检测算法，仿真结果表明，该改进算法与已有算法相比性能相当，但计算量减小。 |
| 关 键 词： | 最小均方(LMS)算法 盲多用户检测 最小输出能量 |
An Improved Variable Step-size LMS Blind Multi-user Detection Algorithm |
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| JING Min-ying,LI Guo-min,WEI Ding-wu. An Improved Variable Step-size LMS Blind Multi-user Detection Algorithm[J]. Communications Technology, 2009, 42(7): 13-14 | |
| Authors: | JING Min-ying LI Guo-min WEI Ding-wu |
| Affiliation: | JING Min-ying, LI Guo-min, WEI Ding -wu(1Communication and Information Engineering College, Xi＇ an University of Science and Technology, Xi＇ an Shaanxi 710054, China; 2Department of Physics, Shaanxi University of Technology, Hanzhong Shaanxi 723001, China; 3PLA Unit 68054, Xi＇ an Shaanxi 710061, China) |
| Abstract: | Blind multi user detection is the key of 3G mobile communication. In this paper, the performances of LMS blind multi-user detection algorithm in DS-CDMA communication system is analyzed, and some improvements on the algorithm are done, finally an improved LMS blind multi-user detection algorithm with variable step size is proposed. Computer simulations show that the performance of the improved algorithm is identical with that of the existing variable step size algorithm, and however, the calculation amount of the improved algorithm is less than that of the existing variable step size algorithm. |
| Keywords: | Least Mean Square （LMS） algorithm blind multi-user detection： minimum output energy |
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