Carrier frequency offset-spread spectrum multiple access (CFO-SSMA) method

Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) Pub Date : 1994-07-04 DOI:10.1109/ISSSTA.1994.379571

M. Sumiya, H. Shinonaga

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引用次数: 3

Abstract

A novel spread spectrum multiple access method employing only a single PN code is proposed. This new method, named "CFO-SSMA (carrier frequency offset-spread spectrum multiple access)", utilizes a single PN code commonly assigned to all users with different carrier frequencies. The amount of the frequency offset between carriers is determined by the information rate, which is very small as compared with the bandwidth of the spread spectrum signal. CFO-SSMA employs a receiver using a surface acoustic wave (SAW) matched filter, which has an advantage of rapid signal acquisition over the conventional receiver, but has a disadvantage of difficulty to change the PN code pattern. CFO-SSMA defeats this disadvantage, because there is no need to change the matched filer in accordance with the channel to be recovered. The concept and basic performance of CFO-SSMA is discussed in this paper. The optimum bandwidth of the receive filter as well as the BER performance of CFO-SSMA are also shown.<>

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载波频偏-扩频多址(CFO-SSMA)方法

提出了一种仅使用单个PN码的扩频多址接入方法。这种新方法被命名为“CFO-SSMA(载波频率偏移-扩频多址)”，它利用一个通常分配给不同载波频率的所有用户的单一PN码。载波间的频偏量由信息速率决定，与扩频信号的带宽相比，信息速率是非常小的。CFO-SSMA采用表面声波(SAW)匹配滤波器的接收机，与传统接收机相比具有快速信号采集的优点，但缺点是难以改变PN码模式。CFO-SSMA克服了这个缺点，因为不需要根据要恢复的信道改变匹配的过滤器。本文讨论了CFO-SSMA的概念和基本性能。给出了接收滤波器的最佳带宽以及CFO-SSMA的误码率性能。

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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Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94)

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