异步CDMA系统中MMSE检测的渐近分析:一个等价结果

Proceedings. 2001 IEEE International Symposium on Information Theory (IEEE Cat. No.01CH37252) Pub Date : 2001-06-24 DOI:10.1109/ISIT.2001.936169

A. Mantravadi, V. Veeravalli

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引用次数: 1

摘要

研究了采用随机扩频序列的CDMA系统中线性MMSE检测的分析。该分析的主要特点是允许用户完全异步，并且假设芯片波形是理想的带限正弦波形。我们证明了检测器输出端的渐近信干涉比(SIR)与等效芯片同步系统中的渐近信干涉比相同。因此，同步分析可以为异步带限系统的性能提供有用的指导。

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Asymptotic analysis of MMSE detection in asynchronous CDMA systems: an equivalence result

We consider the analysis of linear MMSE detection in a CDMA system that employs random spreading sequences. The key features of the analysis are that the users are allowed to be completely asynchronous and the chip waveform is assumed to be the ideal band-limited sine waveform. We show that the asymptotic signal to interference ratio (SIR) at the detector output is the same as that in an equivalent chip synchronous system. Hence, synchronous analyses can provide useful guidelines for the performance in asynchronous band-limited systems.

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Proceedings. 2001 IEEE International Symposium on Information Theory (IEEE Cat. No.01CH37252)

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