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Noise Power and SNR Estimation for OFDM Based Wireless Communication Systems

Overview In this paper, noise power and Signal-to-Noise Ratio (SNR) estimations for OFDM based wireless communication systems are studied. Noise power estimation, which takes into account the color and variation of noise statistics over OFDM sub-carriers into account, is considered. Instead of averaging the instantaneous noise samples estimates over all of the OFDM sub-carriers, dividing the total number of sub-carriers into several sub-groups and averaging the sub-carriers separately within each sub-group is proposed. The proposed solution provides many local estimates, allowing tracking of the variation of the noise statistics across OFDM sub-carriers, which are particularly of use in sub-band adaptive modulation OFDM systems.

Further White Paper Details
Publisher	University of South Florida	File Format	PDF
Date Published	May 2003	Downloads	3
Format	White Papers
Topics	Bandwidth Issues, Mobile - Wireless Communications

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