| CDMA信号在衰落信道中的低复杂性盲多用户检测 |
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| 引用本文： | 林志强,尤肖虎,王勇. CDMA信号在衰落信道中的低复杂性盲多用户检测[J]. 应用科学学报, 2002, 20(1): 47-50 |
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| 作者姓名： | 林志强 尤肖虎 王勇 |
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| 作者单位： | 东南大学国家移动通信重点实验室, 江苏南京 210096 |
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| 基金项目： | 国家自然科学基金资助项目(69725001) |
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| 摘 要： | 分析码分多址(CDMA)信号在衰落信道中的盲多用户检测.在实际通信系统中当信号处于深衰落时,最小均方误差(MMSE)检测器经常失去对信号的相位跟踪.文中提出了一种次优化子空间盲MMSE检测算法,运用目标用户特征波形和辅助向量对信号相位进行去耦处理,使盲MMSE检测器具有次优化低复杂性的结构和算法,并且适合衰落信道.
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| 关 键 词： | 衰落信道 码分多址 最小均方误差检测器 |
| 文章编号： | 0255-8297(2002)01-0047-04 |
| 收稿时间： | 2000-10-11 |
| 修稿时间： | 2001-03-09 |
Low-complexity Blind Multiuser Detection of CDMA Signals in Fading Channels |
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| LIN Zhi qiang,YOU Xiao hu,WANG Yong. Low-complexity Blind Multiuser Detection of CDMA Signals in Fading Channels[J]. Journal of Applied Sciences, 2002, 20(1): 47-50 |
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| Authors: | LIN Zhi qiang YOU Xiao hu WANG Yong |
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| Affiliation: | National Mobile Communications Research Laboratory, Southeast University, Nanjing 210003, China |
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| Abstract: | The problem of blind multiuser detection of CDMA signals in fading channels is considered. It is noted that the minimum mean square error (MMSE) detector often loses phase to lock a desired signal when the desired signal dips into a deep fade. This paper proposes a suboptimal blind MMSE detector that is incorporated into the desired user's signature waveform and the auxiliary vector to achieve low complexity. It decouples the signal phase, and fits into realistic fading channels. |
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| Keywords: | code division multiple access minimum mean square error detector fading channels |
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