基于移频的DS-CDMA系统多址干扰消除器

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI:10.1109/VTC.2001.957195

L. Gonçalves, Adão Silva, A. Gameiro

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引用次数: 5

摘要

直接序列扩频信号的周期平稳特性是众所周知的。这些循环平稳特性意味着由符号速率的倍数分隔的频率分量之间的冗余。我们提出了一种多址干扰消除器，探索了这一特性并将其应用于UMTS-TDD。这种频域消去器作用于扩频信号，使其输出处的干扰和噪声最小化(最小均方误差准则)。在两种检测器配置中对性能进行了评估:一种包括移频消除器(FSC)，另一种包括并行干扰消除器(PIC)。结果与传统的RAKE检测器和传统的PIC检测器的性能进行了基准测试。

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Frequency shift based multiple access interference canceller for DS-CDMA systems

The cyclostationary properties of direct sequence spread spectrum signals are well known. These cyclostationary properties imply a redundancy between frequency components separated by multiples of the symbol rate. We present a multiple access interference canceller that explores this property and applies it to UMTS-TDD. This frequency domain canceller acts on the spread signal in such a way that minimizes the interference and noise at its output (minimum mean squared error criterium). The performance is evaluated in two detector configurations: one including the frequency shift canceller (FSC) and the other plus a parallel interference canceller (PIC). The results are benchmarked against the performance of the conventional RAKE detector and the conventional PIC detector.

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IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)

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