Coarse Frequency Offset Estimation for Digital Audio Broadcasting

Jeong-Ki MIN  Hyoung-Kyu SONG  

IEICE TRANSACTIONS on Communications   Vol.E86-B   No.7   pp.2193-2197
Publication Date: 2003/07/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Transmission Systems and Transmission Equipment
DAB,  minimum energy detection,  OFDM,  frequency offset,  timing offset,  

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The coarse frequency offset estimation algorithm has to provide an initial frequency error estimate, which is sufficiently accurate in order to operate reliably for the subsequent fine frequency synchronization algorithm. In this letter, we deal with a coarse frequency offset estimation for digital audio broadcasting. We propose an improved frequency synchronization scheme which uses the minimum energy detection scheme. We compare the performance of proposed scheme with that of conventional schemes under AWGN and Rayleigh channel. It has been shown that the proposed algorithm has high robustness against a large range of symbol timing offset with a low complexity.