| 联合变换CDMA接收机解调序列抗多址干扰 |
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| 引用本文： | 唐友喜.联合变换CDMA接收机解调序列抗多址干扰[J].电子科技大学学报(社会科学版),1996(5). |
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| 作者姓名： | 唐友喜 |
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| 作者单位： | 电子科技大学抗干扰通信国防重点实验室 |
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| 摘 要： | 提出了零均值噪声信道中的同步码分多址通信系统的一种新的抗多址干扰方法。这种抗多址干扰方式的接收机是单用户检测式的，每个接收机的解调序列由各特征序列及信道的统计特性联合变换得到。给出了无偏估计的一类解调序列，提供了一种截获同步ＣＤＭＡ通信系统通信信息的方法。同时给出了误差最小无偏估计检测的解调序列。推导出了这种抗多址干扰方式ＣＤＭＡ通信系统在加性白噪声信道中误码率的上下界，给出了部分数值结果。
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| 关 键 词： | 码分多址 多址干扰 远近效应 特征序列 解调序列 误码率 最小方差无偏估计 单用户检测 |
Resisted Multiuser Interference Method of Demodulation Sequences Equalled Combined Transforming Modulation Sequences for Synchronous CDMA Communication Systems |
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| Tang,Youxi.Resisted Multiuser Interference Method of Demodulation Sequences Equalled Combined Transforming Modulation Sequences for Synchronous CDMA Communication Systems[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),1996(5). |
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| Authors: | Tang Youxi |
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| Abstract: | In this paper,a new anti multiuser interference method of synchronous CDMA communication systems in zero mean noise channel is given.The demodulation sequences of each receiver equal the combined transforming signature sequences and the matrix of statistic properties of channel,and the receiver is single user detection receiver in this method.A class of demodulation sequences of unbias estimation is given.The method is to intercept the information of synchronous CDMA communications.The demodulation sequence of minimum error unbias estimation is obtained.The upper and lower bound of bit error rate of the CDMA system is given.Some numerical result is worked out at the end of this paper. |
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| Keywords: | CDMA multiuser interference near far effect signature sequence demodulation sequence bit error rate minimum variance unbias estimate single user detection |
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