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An Improved Differential Space-Time Block Coding Scheme Based on Viterbi Algorithm
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DOI：10.1109/LCOMM.2013.091113.131384.png)
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摘要
En 中文
This letter proposes a novel improved differential space-time block code (DSTBC) scheme. By introducing a specific redundancy mechanism, the proposed DSTBC encoder behaves as a second-order discrete Markov process that we model by a multilevel trellis diagram. At the receiver side, the well-known Viterbi algorithm is applied without channel state information (CSI). The new scheme completely compensates for the 3-dB penalty, over wide SNR range, noticed in conventional DSTBC scheme and shows a closer performance to coherent STBC.
Keyword:
Differential space-time block code
Viterbi algorithm
trellis diagram
期刊
IF:
4.4
论文数:
1.3W
被引数:
2.2W
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