An SFBC-OFDM Receiver to Combat Multiple Frequency Offsets in Cooperative Networks
碩士 === 國立交通大學 === 電子研究所 === 98 === In this thesis, a new space-frequency combination technique is proposed for Alamouti coded Orthogonal Frequency Division Multiplexing (OFDM) in the context of cooperative communications. Since cooperative antennas are distributed, there may exist multiple carrier f...
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| Format: | Others |
| Language: | en_US |
| Published: |
2010
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| Online Access: | http://ndltd.ncl.edu.tw/handle/54904282460845960473 |
| Summary: | 碩士 === 國立交通大學 === 電子研究所 === 98 === In this thesis, a new space-frequency combination technique is proposed for Alamouti coded Orthogonal Frequency Division Multiplexing (OFDM) in the context of cooperative communications. Since cooperative antennas are distributed, there may exist multiple carrier frequency offsets (CFOs) and traditional space-frequency decoding may not apply. The proposed method optimally combines the two sets of separately synchronized signal in order to eliminate inter-symbol interference (ISI) and inter-carrier interference (ICI) effectively. Iterative interference cancellation instead of exact cancellation is usually used to combat multiple access interference (MAI) for lower computational complexity. Through simulation results, it is observed that the proposed method with iterative ICI cancellation achieve good bits error rate (BER) performance and a better tolerance of multiple CFOs.
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