Joint Frequency Offset and SNR Estimation for FFT-Based System

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

IEICE TRANSACTIONS on Communications   Vol.E87-B    No.7    pp.2013-2016
Publication Date: 2004/07/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Transmission Systems and Transmission Equipment
SNR estimation,  frequency offset estimation,  AWGN,  FFT-based system,  

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In this letter, we propose joint frequency offset and SNR estimation technique. The frequency offset may degrade the system performance greatly by deleterious effect. The proposed frequency offset estimation technique estimates frequency offset by employing the interpolation technique in the frequency domain. Also we propose SNR estimation technique using the estimated frequency offset for FFT-based system. The SNR estimated by the receiver 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 frequency offset and SNR estimator.