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

Beijing; China); Ming Yang (1); Tao Peng (1); Telecommunications; Wenbo Wang (1) ((1) Beijing University of Posts; Xiaochuan Zhao (1)

arxiv: 0811.0431 · v1 · submitted 2008-11-04 · 💻 cs.IT · math.IT

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

Xiaochuan Zhao (1) , Ming Yang (1) , Tao Peng (1) , Wenbo Wang (1) ((1) Beijing University of Posts , Telecommunications , Beijing , China) This is my paper

classification 💻 cs.IT math.IT

keywords channelscorrelationdoublyfadingfrequencymatricesofdmselective

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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.

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

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