Computer Science ›› 2017, Vol. 44 ›› Issue (3): 114-117.doi: 10.11896/j.issn.1002-137X.2017.03.025

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Identification Method for OFDM Signal Based on MUSIC Algorithm

ZHANG Hai-chuan and LEI Ying-ke   

  • Online:2018-11-13 Published:2018-11-13

Abstract: Aiming at the poor performance and the large required OFDM symbol number of conventional identification methods for the short cyclic prefix OFDM signal,we proposed a identification method for OFDM signal based on MUSIC algorithm.The method first analyzes the structure characteristic of OFDM signal,then implements singular value decomposition for the autocorrelation matrix and extracts all the singular value matrix.Finally,the algorithm identifies the OFDM signal according to the number of larger non-zero singular values of the matrix.The experimental results shows that the proposed algorithm just need less OFDM symbols to be able to effectively identify the short cyclic prefix OFDM signal and has better performance than the conventional algorithm.

Key words: OFDM,Cyclic prefix,MUSIC algorithm,Singular value decomposition

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