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arXiv 0811.0431cs.ITmath.IT
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OFDM系统双选择性衰落信道频率相关矩阵的Cramer-Rao下界

On the Cramer-Rao Lower Bound for Frequency Correlation Matrices of Doubly Selective Fading Channels for OFDM Systems

Xiaochuan Zhao, Ming Yang, Tao Peng, Wenbo Wang

摘要:

本文给出了双选择性衰落信道下OFDM系统中CRLB的解析表达式和采样频率相关矩阵的最大似然估计。分析和数值计算结果表明,采样数对平均均方误差的影响占主导地位,而信噪比和多普勒扩展对平均均方误差的影响很小。

英文摘要:

The analytic expression of CRLB and the maximum likelihood estimator for the sample frequency correlation matrices in doubly selective fading channels for OFDM systems are reported in this paper. According to the analytical and numerical results, the amount of samples affects the average mean square error dominantly while the SNR and the Doppler spread do negligibly.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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