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Timing and Frequency Synchronization Research for OFDM Systems

In this paper, there are two major contents about OFDM synchronization issue in wireless communication. The first of all, a joint MLE and MMSE synchronization scheme is proposed for OFDM timing and frequency offset. Secondly, a novel pilot-aided inter-carrier interference (ICI) self-cancellation scheme is proposed for use in orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme maps both modulated data symbols and pre-defined pilot symbols onto non-neighboring sub-carriers with weighting coefficients of +1 and -1. With the aid of pilot symbols, a more accurate estimation of frequency offsets can be obtained, and the ICI self-cancellation demodulation can be operated properly.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0629105-171747
Date29 June 2005
CreatorsHu, Wei-Wen
ContributorsChih-Peng Li, Mao-Ching Chao, Yu-Chan Tang, Chin-Liang Wang
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629105-171747
Rightsnot_available, Copyright information available at source archive

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