OFDM系统中多径信道参数对信道估计性能的影响

AFRICON 2009 Pub Date : 2009-11-03 DOI:10.1109/AFRCON.2009.5308191

E. Golovins, N. Ventura

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引用次数: 2

摘要

无线OFDM系统的性能在很大程度上取决于信道估计的精度。然而，很难考虑到所有可能的情况，因为最小均方误差(MMSE)估计器输出的误差方差取决于二阶信道统计量。在本文中，我们推导了MSE的上下边界，描述了最佳和最坏的信道估计性能，并讨论了达到这些边界时的信道条件。

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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Impact of multipath channel parameters on channel estimation performance in OFDM systems

Performance of wireless OFDM systems significantly depends on channel estimation accuracy. However, it is difficult to take into account all possible scenarios as the variance of error at the output of the minimum mean square error (MMSE) estimator depends on the second-order channel statistics. In this paper, we derive the lower and the upper MSE bounds, characterising the best and the worst-case channel estimation performance, and discuss channel conditions when these bounds are attained.

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来源期刊

AFRICON 2009

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