Blind estimation of spreading sequence of CDMA signals based on Fast-ICA and performance analysis

The DS-CDMA signals can be divided into two types,the short-code(SC) and the long-code(LC) DS-CDMA signal.The existing methods are only used to estimate spreading sequences of SC-DS-CDMA signals,which cannot work for the LC-DS-CDMA signals.A new blind estimation algorithm for DS-CDMA signals based o...

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Bibliographic Details
Main Authors: LU Feng-bo, HUANG Zhi-tao, JIANG Wen-li
Format: Article
Language:zho
Published: Editorial Department of Journal on Communications 2011-01-01
Series:Tongxin xuebao
Subjects:
Online Access:http://www.joconline.com.cn/zh/article/74419313/
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Summary:The DS-CDMA signals can be divided into two types,the short-code(SC) and the long-code(LC) DS-CDMA signal.The existing methods are only used to estimate spreading sequences of SC-DS-CDMA signals,which cannot work for the LC-DS-CDMA signals.A new blind estimation algorithm for DS-CDMA signals based on fast independent com-ponent analysis was proposed by analyzing the mathematical model of the LC-DS-CDMA signal and the estimation per-formance of the proposed algorithm in theory was deduced.Moreover,the proposed method not only applies to the LC-DS-CDMA but also SC-DS-CDMA signals.The theoretical analysis and simulation results verify the effectiveness of the proposed algorithm.
ISSN:1000-436X