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.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0629105-171747 |
| Date | 29 June 2005 |
| Creators | Hu, Wei-Wen |
| Contributors | Chih-Peng Li, Mao-Ching Chao, Yu-Chan Tang, Chin-Liang Wang |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629105-171747 |
| Rights | not_available, Copyright information available at source archive |
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