| 多径衰落信道下基于子空间的RLS盲多用户检测 |
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| 引用本文： | 兰元荣,王东昱,武梦龙,杨大成.多径衰落信道下基于子空间的RLS盲多用户检测[J].电路与系统学报,2008,13(6). |
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| 作者姓名： | 兰元荣 王东昱 武梦龙 杨大成 |
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| 作者单位： | 1. 北京邮电大学93#,北京邮电大学,无线通信中心,北京,100876
2. 北方工业大学,信息工程学院,北京,100041 |
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| 基金项目： | 国家自然科学基金资助项目
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| 摘 要： | 本文在RLS盲检测算法的基础上,利用子空间的概念,构建了基于子空间的RLS多用户盲检测算法,在仅仅需要知道目标用户的特征序列和定时的条件下,自适应地估计检测向量,通过理论分析表明,改进的检测算法在运算复杂度上低于满秩RLS算法7].仿真结果表明,改进的检测算法收敛性能优于满秩RLS算法,同时在特征序列畸变条件下表现出健壮件也远优于满秩RLS检测算法.
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| 关 键 词： | 盲多用户检测 RLS滤波算法 收敛性分析 |
Subspace-based blind adaptive multiuser detection using RLS filter with multi-path |
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| LAN Yuan-rong,WANG Dong-yu,WU Meng-long,YANG Da-cheng.Subspace-based blind adaptive multiuser detection using RLS filter with multi-path[J].Journal of Circuits and Systems,2008,13(6). |
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| Authors: | LAN Yuan-rong WANG Dong-yu WU Meng-long YANG Da-cheng |
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| Affiliation: | LAN Yuan-rong1,WANG Dong-yu2,WU Meng-long2,YANG Da-cheng1(1.Beijing University of Posts , Telecommunications 93#,BUPT-Qualcomm Research Center,100876,China,2.Department of Electronic Engineering,North China University of Technology,Beijing 100041,China ) |
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| Abstract: | A new blind adaptive multiuser detection scheme based on the hybrid of RLS filter and subspace estimation is proposed.It is shown that this detector can be expressed as an anchored signal in the signal subspace and the coefficients can be estimated by the RLS filter only requiring the knowledge of the signature waveform and the timing of the desired user.The resulting subspace-based algorithm brings the benefit of lower computational complexity than the full-rank approach, Numerical simulations in flat fadi... |
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| Keywords: | DS/CDMA MAI |
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