Power delay profile and noise variance estimation for OFDM

Cui, Tao and Tellambura, Chintha (2006) Power delay profile and noise variance estimation for OFDM. IEEE Communications Letters, 10 (1). pp. 25-27. ISSN 1089-7798. http://resolver.caltech.edu/CaltechAUTHORS:CUIieeecl06a

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Abstract

In this letter, we present cyclic-prefix (CP) based noise-variance and power-delay-profile estimators for Orthogonal Frequency Division Multiplexing (OFDM) systems. Signal correlation due to the use of the CP is exploited without requiring additional pilot symbols. A heuristic estimator and a class of approximate maximum likelihood (ML) estimators are proposed. The proposed algorithms can be applied to both unitary and non-unitary constellations. These algorithms can be readily used for applications such as minimum mean-square error (MMSE) channel estimation.

Item Type:	Article
Additional Information:	© Copyright 2006 IEEE. Reprinted with permission. Manuscript received June 8, 2005. The associate editor coordinating the review of this letter and approving it for publication was Prof. George K. Karagiannidis. This work has been supported in part by the Natural Sciences and Engineering Research Council of Canada, Informatics Circle of Research Excellence, and the Alberta Ingenuity Fund.
Subject Keywords:	OFDM; channel estimation; SNR estimation
Issue or Number:	1
Record Number:	CaltechAUTHORS:CUIieeecl06a
Persistent URL:	http://resolver.caltech.edu/CaltechAUTHORS:CUIieeecl06a
Alternative URL:	http://dx.doi.org/10.1109/LCOMM.2006.1576558
Usage Policy:	No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:	3763
Collection:	CaltechAUTHORS
Deposited By:	Tony Diaz
Deposited On:	11 Jul 2006
Last Modified:	22 Jun 2016 22:35

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