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

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

Information Theory 2008-11-05 v1 math.IT

Authors: Xiaochuan Zhao , Ming Yang , Tao Peng , Wenbo Wang

Abstract

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.

Keywords

Cramer-Rao lower bound frequency correlation matrix doubly selective fading OFDM maximum likelihood estimator mean square error

Cite

@article{arxiv.0811.0431,
  title  = {On the Cramer-Rao Lower Bound for Frequency Correlation Matrices of Doubly Selective Fading Channels for OFDM Systems},
  author = {Xiaochuan Zhao and Ming Yang and Tao Peng and Wenbo Wang},
  journal= {arXiv preprint arXiv:0811.0431},
  year   = {2008}
}

Comments

5 pages, 7 figures, Submitted to IEEE ICC'09

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