The optimum received signal-power distribution for CDMA packet communication systems employing successive interference cancellation

Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications - Programme and Book of Abstracts (IEEE Cat. No.04TH8738) Pub Date : 2004-08-30 DOI:10.1109/ISSSTA.2004.1371659

Y. Tadokoro, H. Okada, T. Yamazato, M. Katayama

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引用次数: 1

Abstract

In CDMA packet communication systems employing the successive interference cancellation (SIC) scheme, the suppression of MAI depends on the received signal-power distribution, in addition to the cross-correlation characteristics of the spreading sequences and the number of transmitted packets. Some work has been done about discovering the received signal-power distribution which makes MAI be suppressed effectively. This distribution minimizes the averaged bit error rate (BER). However, in packet communication systems, it is important to the performance whether packets can be transmitted successfully or not. Even if the averaged BER is high, many packets can be correctly transmitted. It implies that the optimum distribution on averaged BER does not give the best performance of packet transmission. The received signal-power distribution which gives the best performance of packet transmission is derived. Such a distribution makes clear the limit of performance improvement using SIC.

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采用连续干扰消除的CDMA分组通信系统的最佳接收信号功率分配

在采用连续干扰消除(SIC)方案的CDMA分组通信系统中，除传播序列的相互关联特性和传输的分组数外，干扰抑制还取决于接收信号的功率分布。为了有效地抑制微波干扰，在发现接收信号的功率分布方面做了一些工作。这种分布使平均误码率(BER)最小化。然而，在分组通信系统中，数据包能否成功传输对系统的性能有着重要的影响。即使平均误码率很高，也可以正确传输许多数据包。这说明平均误码率上的最优分配并不能提供最佳的分组传输性能。导出了能使分组传输达到最佳性能的接收信号功率分布。这样的分布明确了使用SIC进行性能改进的限制。

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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Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications - Programme and Book of Abstracts (IEEE Cat. No.04TH8738)

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