一种新的CDMA系统多用户检测方法

P. Djuric, Min Guo
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引用次数: 2

摘要

提出了一种新的多用户检测方案。该检测器基于Fisher线性判别函数,其权重由周期性传输的训练数据获得。所提出的检测器不需要了解系统中其余用户的签名,并且在推导过程中也没有对干扰信号的噪声进行假设。此外,相同的检测器可以在同步和异步系统中工作。计算机仿真结果表明,该检测器在较宽的信噪比范围内具有良好的性能,在不同用户接收的信号功率不等的情况下也具有良好的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A novel approach to multiuser detection for CDMA systems
A new scheme for multiuser detection is proposed. The detector is based on the Fisher's linear discriminant function whose weights are obtained from periodically transmitted training data. The proposed detector does not require knowledge of the signatures of the remaining users in the system and no assumptions are made in its derivation regarding the noise which corrupts the signal. Also, the same detector can work in both, synchronous and asynchronous systems. The computer simulations show that the detector performs very well in a wide range of signal-to-noise ratios and has excellent performance in cases when the received signals from various users have unequal powers.
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