Performance evaluation of a new BPSK-OFDM timing estimation algorithm

  • Authors:

  • Jyh-Horng Wen;Gwo-Ruey Lee;Wen-Hui Kuan;Cheng-Ying Yang

  • Affiliations:

  • The Institute of Electrical Engineering, National Chung Cheng University, Min-Hsiung, Chia-Yi, Taiwan, R.O.C. and Department of Electrical Engineering, Tunghai University, Taichung, Taiwan, R.O.C.;The Institute of Electrical Engineering, National Chung Cheng University, Min-Hsiung, Chia-Yi, Taiwan, R.O.C.;The Institute of Electrical Engineering, National Chung Cheng University, Min-Hsiung, Chia-Yi, Taiwan, R.O.C.;Department of Computer Science and Information Engineering, National Formosa University, Hu-Wei, Yun-Lin, Taiwan, R.O.C.

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2007

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Abstract

Previously, the timing estimation in OFDM system employs cyclic prefix has been presented with the assumption of independent identified distributed OFDM symbol. The information used to find the symbol synchronization depends on the length of cyclic prefix. Actually, the data in the BPSK-OFDM modulated symbol, transferred by inverse fast Fourier transform, is with a complex symmetry character. With this character, more information from the whole OFDM symbol could be provided for the symbol timing. In this paper, the proposed algorithm uses the autocorrelation of the received signal to obtain the symbol timing. The simulation of Beek's algorithm and the proposed scheme are presented. The performances of these algorithms are evaluated based on the missing symbol probability and the estimator mean square error. The simulation results show that the proposed algorithm is suitable to achieve a better symbol synchronization.