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

LU Feng-bo; HUANG Zhi-tao; JIANG Wen-li

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

更新时间：2024-10-14

- Blind estimation of spreading sequence of CDMA signals based on Fast-ICA and performance analysis
- Vol. 32, Issue 8, Pages: 136-142(2011)
- 作者机构：
  
  国防科技大学电子科学与工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN929.533
- Published：2011
- 稿件说明：
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LU Feng-bo, HUANG Zhi-tao, JIANG Wen-li. Blind estimation of spreading sequence of CDMA signals based on Fast-ICA and performance analysis[J]. 2011, 32(8): 136-142.
DOI：

LU Feng-bo, HUANG Zhi-tao, JIANG Wen-li. Blind estimation of spreading sequence of CDMA signals based on Fast-ICA and performance analysis[J]. 2011, 32(8): 136-142. DOI：

摘要

DS-CDMA分为长码和短码扩频2种扩频方式

已有的扩频序列盲估计算法只适用于短码扩频信号

不能完成长码扩频信号的扩频序列估计。对长码扩频CDMA信号的数学模型进行分析

提出了一种的新的基于Fast-ICA的多用户扩频序列盲估计方法并推导了算法的理论性能。该方法不仅能适用于长码扩频CDMA信号

而且对同步短码扩频CDMA信号也同样适用。理论分析和仿真结果验证了该方法的有效性。

Abstract

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.

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