| KM序列用作RAKE型CDMA系统扩频码的分析 |
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| 引用本文： | 饶妮妮,尧德中,S.J.Shepherd. KM序列用作RAKE型CDMA系统扩频码的分析[J]. 电子学报, 2000, 28(7): 23-27 |
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| 作者姓名： | 饶妮妮 尧德中 S.J.Shepherd |
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| 作者单位： | 1. 电子科技大学自动化系,成都 610054;2. Dept.Of EEE, Univ.of Bradford, UK |
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| 摘 要： | 本文提出将KM 序列用作RAKE型CDMA系统的扩频码.基于一个RAKE接收机模型,分析了CDMA系统性能并提出了适于作RAKE型CDMA系统扩频码的PN序列的特性.接着,分析了KM 序列作RAKE型CDMA系统扩频码的优劣.最后,运用计算机仿真,比较了m序列和KM 序列的互相关特性以及在相干接收机和RAKE接收机下,这两种序列和Gold序列对应的系统平均误码率,从而证实了KM 序列作为扩频码的可行性.
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| 关 键 词： | KM 序列 CDMA系统 RAKE接收机 互相关 平均误码率 |
| 收稿时间： | 1999-05-31 |
Analysis of KM Sequences as Spreading Codes for CDMA Systems with RAKE Receiver |
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| RAO Ni-ni,YAO De-zhong,S.J.Shepherd. Analysis of KM Sequences as Spreading Codes for CDMA Systems with RAKE Receiver[J]. Acta Electronica Sinica, 2000, 28(7): 23-27 |
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| Authors: | RAO Ni-ni YAO De-zhong S.J.Shepherd |
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| Affiliation: | 1. Dept.of Auto.UEST of China,Chengdu 610054,China;2. Dept.Of EEE, Univ.of Bradford, UK |
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| Abstract: | In this paper,KM sequence is presented as a potentially spreading code for CDMA (Code division multiple access) system with RAKE receiver.First,based on a RAKE receiver modeling,the performance of CDMA system with RAKE receiver is analyzed,and the properties of PN sequences that are suited to the CDMA system with RAKE receiver are showed.Next,the advantages and disadvantages of KM sequences as spreading codes for CDMA system with RAKE receiver are analyzed systematically.Finally,the cross-correlation functions between m sequence and KM sequence,and the average bit error probability (BEP) corresponding to both the sequences and Gold sequence under correlating receiver and RAKE receiver,are compared.The feasibility of KM sequence as spreading codes for CDMA system with RAKE receiver is verified. |
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| Keywords: | KM sequence CDMA system RAKE receiver cross-correlation average bit error probability |
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