In this thesis, a modified Kalman filter is proposed for time varying channel estimation in orthogonal frequency division multiplexing (OFDM). The proposed scheme adopts pre-coding scheme and minimum mean squared error (MMSE) equalizer to improve system performance. By using pre-coding schemes, information can be protected by signal diversities, which prevent Kalman filter to disperse due to erroneous data signals. In this investigation, the proposed system architecture is verified by using simulation experiments. Simulation results demonstrate that the proposed schemes substantially improve system performances under verious channel conditions.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0823106-164626 |
| Date | 23 August 2006 |
| Creators | Chou, Hsin-Heng |
| Contributors | Tsung-Hsien Liu, Tsang-Yi Wang, Chih-Peng Li, Der-Feng Tseng, Yung-Fang Chen |
| 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-0823106-164626 |
| Rights | campus_withheld, Copyright information available at source archive |
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