Fast-ICA Based Optimize Blind Estimation of Spreading Sequence of CDMA Signals

doi:10.3969/j.issn.0372-2112.2012.08.006

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Fast-ICA Based Optimize Blind Estimation of Spreading Sequence of CDMA Signals

更新时间：2025-07-08

- Fast-ICA Based Optimize Blind Estimation of Spreading Sequence of CDMA Signals
- Acta Electronica Sinica Vol. 40, Issue 8, Pages: 1532-1538(2012)
- 作者机构：
  
  国防科学技术大学电子科学与工程学院,湖南,长沙,410073
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.61072120)
- DOI：10.3969/j.issn.0372-2112.2012.08.006
  CLC： TN911
- Published：2012
- 稿件说明：
移动端阅览
Fast-ICA Based Optimize Blind Estimation of Spreading Sequence of CDMA Signals[J]. Acta Electronica Sinica, 2012, 40(8): 1532-1538.
DOI：

Fast-ICA Based Optimize Blind Estimation of Spreading Sequence of CDMA Signals[J]. Acta Electronica Sinica, 2012, 40(8): 1532-1538. DOI： 10.3969/j.issn.0372-2112.2012.08.006.

摘要

针对当前基于分段估计非周期长码DS-SS信号扩频序列的方法

本文在分析长码扩频CDMA信号的特点上

提出基于Fast-ICA的盲估计CDMA信号扩频序列的优化分段取值方法

并给出区别于当前分段长度尽量小、以降低信息跳变概率的分段准则.该方法不仅能够适用于同步单、多用户短码DS-SS信号

也适用于单、多用户非周期长码DS-SS信号.同时

文章提出一种接近于实际应用的分段选择

理论分析和仿真结果验证了本文方法的有效性.

Abstract

Aiming at the segmentation-based method to estimate the spreading sequences of non-periodic long code(LPC) direct sequence spread spectrum(DS-SS) signal

this paper presents a Fast-ICA based method to estimate the spreading sequence of CDMA signals with optimize segmentation blindly

which on the base of the mathematical analysis of long-code CDMA signal.And then

the segmentation criterion different from current method

which as small as possible to cost the jumping probability

is given.The method is not only applicable for synchronous short-code single- or multi-user DSSS signals

but also adoptive to non-periodic long-code single- or multi-user DSSS signals.At the same time

an effective segmentation method is given in this paper

mathematic analysis and simulation results demonstrate the validity of these methods.

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