直接序列扩频多址系统在室内环境下的性能

Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 1989-06-01 DOI:10.1109/PACRIM.1989.48318

E.C. Lim, P. Galko

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引用次数: 0

摘要

对一种直接序列扩频多址(DS/SS-MA)系统在室内环境下的性能进行了评价。该系统采用选择分集和差分相移键控作为调制方式。在数据速率为32、64和144kb /s的情况下，系统的性能表现来源于实际信道测量的参数。研究发现，利用DS/SS信号固有的频率分集特性可以提高系统的性能。结果表明，当空间分集接收与DS/SS调制串联工作时，系统性能的改善最大。

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Direct sequence spread-spectrum multiple access system performance in an indoor milieu characterized by a Rician channel

The performance of a direct-sequence spread-spectrum multiple-access (DS/SS-MA) system operating in an indoor milieu characterized by a Rician fading multipath channel is evaluated. The system uses selection diversity and differential phase shift keying as the modulation. The performance of the system is presented for Rician channels with parameters derived from reported actual channel measurements at data rates of 32, 64, and 144 kb/s. It is found that the performance of these systems can be enhanced by exploiting the frequency diversity characteristic inherent in DS/SS signals. It is shown that the improvement in system performance is greatest when space diversity reception operates in tandem with DS/SS modulation.<>

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Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing

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