Training-Based Symbol-Interleaved Trellis Coded Noncoherent Space-Time Modulation
碩士 === 國立中央大學 === 通訊工程研究所 === 97 === The main goal of the next generation wireless communication systems provides high data rates and high mobile service for the Internet and multimedia applications. Space-time coding was one of the most effective techniques to combat fading and to provide high reli...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2009
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| Online Access: | http://ndltd.ncl.edu.tw/handle/sk3n82 |
| Summary: | 碩士 === 國立中央大學 === 通訊工程研究所 === 97 === The main goal of the next generation wireless communication systems provides
high data rates and high mobile service for the Internet and multimedia applications.
Space-time coding was one of the most effective techniques to combat fading and to provide high reliable transmission. A noncoherent space-time code named unitary space-time modulation(USTM) in which the transmit and the receive antennas do not know the channel state information; trellis coded USTM for the noncoherent block fading channel can obtain signigicant coding gains; the reviewed scheme proposed a training-based trellis coded noncoherent space-time modulation scheme by properly interleaving space-time signals for the block fading channels. This scheme can enlarge temporal diversity at the price of increased complexity and delay thus can have good performance at high SNR.
In this thesis, we propose a scheme of training-based trellis coded noncoherent space-time modulation which has larger diversity gains by training-basing and symbol-interleaving for the block fading channels. We utilize computers to search the best generator matrix which let the proposed scheme have the best BER. Simulation results confirm that our scheme has larger diversity thus has better BER at high SNR than the reviewed scheme.
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