DS/BPSK-CDMA通信系统的信道估计算法

Proceedings of PIMRC '96 - 7th International Symposium on Personal, Indoor, and Mobile Communications Pub Date : 1996-10-15 DOI:10.1109/PIMRC.1996.568462

M. Bui, H. Azad, H. Aghvami

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引用次数: 5

摘要

在衰落多径条件下，对采用二进制相移键控(BPSK)调制和RAKE接收机的直接序列码分多址(DS/CDMA)通信系统的不同信道估计算法进行了评估。考虑了两种策略:在下行链路中传输导频信号和在上行链路中对数据进行分组组织。系统的性能下降主要是由于对复杂幅度的估计不准确，而不是由于时延;当使用带平均滤波器的导频信号或将前导信息与符号估计相结合时，它仍然很低。

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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Channel estimation algorithms for DS/BPSK-CDMA communications systems

Different channel estimation algorithms for direct-sequence code-division multiple-access (DS/CDMA) communications systems using binary phase-shift-keying (BPSK) modulation and a RAKE receiver are evaluated under fading multipath conditions. Two strategies are considered: the transmission of a pilot signal in the downlink and the block organization of the data in the uplink. The performance degradation of the system is due mainly to inaccurate estimation of the complex amplitudes rather than the delays; it remains low when using pilot signals with averaging filters or combining preamble information with symbol estimation.

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Proceedings of PIMRC '96 - 7th International Symposium on Personal, Indoor, and Mobile Communications

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