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Channel estimation for mobile OFDM system with different detectors under time-varying Rayleigh fading channel

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3 Author(s)
Pay Kok Yoon ; Nat. Univ. of Singapore, Singapore ; Ho Kar-Ming, P. ; Ng Chun Sum

This paper discusses the channel estimation issue in orthogonal frequency division multiplexing (OFDM) system using pilot-symbol assisted modulation (PSAM). A number of PSAM-OFDM detectors were considered, which included the decorrelator detector and the linear minimum mean square error (LMMSE) detector. The performance of these detectors were measured against a number of benchmarks, which include the ideal coherent receiver and the frequency-domain differential BPSK (FD-DBPSK) OFDM detector which is much simpler to implement at the expense of system performance. The conclusion is that PSAM is a very robust technique for estimating and compensating multipath fading commonly found in mobile communication channels.

Published in:

Communication Systems, 2002. ICCS 2002. The 8th International Conference on  (Volume:1 )

Date of Conference:

25-28 Nov. 2002