长扩频MC-CDMA系统的盲信道估计

2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI:10.1109/ISPACS.2006.364867

Wen-le Bai, Shu-jun Guo, Chang-nian Zhang, Chang-liu Niu, Ze-min Liu

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引用次数: 1

摘要

研究了长(非周期)扩频MC-CDMA系统的盲信道估计问题。信道脉冲响应在传输码元估计中起着重要的作用。然而，由于编码的扩频长，时变效应给信道估计带来了困难。针对这种情况，本文提出了一种称为TCA(转置列平均)的盲信道估计算法及其简化算法。该算法实现简单，不仅适用于非周期扩频系统，也适用于短周期扩频系统。计算机仿真结果说明了它在不同工况下的性能

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Blind Channel Estimation for MC-CDMA Systems with Long Spreading Codes

This paper focuses on the blind channel estimation for MC-CDMA systems with long (aperiodic) spreading codes. The channel impulse response plays an important role in estimation of the transmitted symbol. However, due to the long spreading codes, the time-varying effect makes the channel estimation difficult. For this case, a blind channel estimation algorithm called TCA (transpose column-averaging) and its simplified algorithm are proposed in this paper. The proposed algorithms are easily implemented, and can be used not only in the system with aperiodic spreading codes but also in the system with short (periodic) spreading codes. The results of computer simulation illustrate its performance in different condition

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2006 International Symposium on Intelligent Signal Processing and Communications

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