A Cramer-Rao Bound for Semi-Blind Channel Estimation in Redundant Block Transmission Systems
Information Theory
2012-09-20 v1 math.IT
Abstract
A Cramer-Rao bound (CRB) for semi-blind channel estimators in redundant block transmission systems is derived. The derived CRB is valid for any system adopting a full-rank linear redundant precoder, including the popular cyclic-prefixed orthogonal frequency-division multiplexing system. Simple forms of CRBs for multiple complex parameters, either unconstrained or constrained by a holomorphic function, are also derived, which facilitate the CRB derivation of the problem of interest. The derived CRB is a lower bound on the variance of any unbiased semi-blind channel estimator, and can serve as a tractable performance metric for system design.
Keywords
Cite
@article{arxiv.1209.4207,
title = {A Cramer-Rao Bound for Semi-Blind Channel Estimation in Redundant Block Transmission Systems},
author = {Yen-Huan Li and Borching Su and Ping-Cheng Yeh},
journal= {arXiv preprint arXiv:1209.4207},
year = {2012}
}
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10 pages