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异步CDMA系统中的盲多用户检测算法
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针对实际应用中的DS/CDMA系统多为多径衰落信道下的异步DS/CDMA系统情况，通过对用于AWGN信道下的同步DS/CDMA系统中的常规盲多用户检测算法的改进，使这类算法在多径衰落信道下的异步DS/CDMA系统中仍具有很好的性能。理论分析和计算机仿真结果证实了改进方法的可行性。
关 键 词 多址干扰; 盲多用户检测; 异步码分多址; LS准则
Abstract Aim at the case that the practical DS/CDMA system often is asynchronous DS/CDMA system in multipath fading channel, some conventional blind multi-user detection algorithms, which were applied to synchronous DS/CDMA system in AWGN channel, are modified, and to use them to asynchronous DS/CDMA system in multipath fading channel,these modified algorithms have good performance.Theoretical analysis and computer simulation confirm that these modified methods are available.
Key words multiple access inference; blind multiuser detection; asynchronous CDMA; LS criterion
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