Signal-to-Noise Ratio Estimation for FFT-Based System

Bo-Kyung LEE  Mi-Jeong KIM  Hyoung-Kyu SONG  

IEICE TRANSACTIONS on Communications   Vol.E88-B   No.3   pp.1279-1281
Publication Date: 2005/03/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.3.1279
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
SNR estimation,  fading channel,  FFT-based system,  

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In this letter, we propose the SNR estimator for multipath fading channels. We employ the least squares estimator for estimating the channel and estimate the SNR using the estimated noise variance. The SNR estimation can be used to adapt the demodulation algorithm to enhance its performance, as well as to provide the channel quality information. Simulation results show the performance of SNR estimator.