On the Detection of Coded MIMO OFDM Signals in Time-Varying Channels
碩士 === 國立交通大學 === 電信工程系所 === 93 === This thesis is mainly concerned about the developments of the receiver structure and the signal processing algorithms for LDPC-coded OFDM systems in a time-varying channel. We suggest a joint channel estimation and decoding receiver structure using an iterative de...
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| Format: | Others |
| Language: | en_US |
| Published: |
2005
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| Online Access: | http://ndltd.ncl.edu.tw/handle/60047500744780549294 |
| Summary: | 碩士 === 國立交通大學 === 電信工程系所 === 93 === This thesis is mainly concerned about the developments of the receiver structure and the signal processing algorithms for LDPC-coded OFDM systems in a time-varying channel.
We suggest a joint channel estimation and decoding receiver structure using an iterative decoding approach that exchanges the information between the low density parity check (LDPC) code decoder output and the orthogonal frequency division multiplexing (OFDM) channel estimator input. Efficient new model-based algorithms for estimating time-varying multi-carrier channel frequency responses are given. We consider both single-input single-output (SISO) and multiple-input multiple-output (MIMO) cases.
Computer simulation is performed to estimate the performance of the proposed algorithms. Numerical results reveal that our algorithms do yield excellent bit error rate
(BER) and frame error rate (FER) performance.
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