作者：
Zhang, TianShandong Univ
Sch Informat Sci & Engn Jinan 250100 Peoples R China Tsinghua Univ
Natl Lab Informat Sci & Technol TNList State Key Lab Microwave & Digital Commun Dept Elect Engn Beijing 100084 Peoples R China
Distributed space-time coding (DSTC) with an efficient relayingprotocol, referred to as amplify-and-forward and decode-and-forward (DF-AF) selectionrelaying, has not received much attention yet. In the DF-AF selecti...
详细信息
Distributed space-time coding (DSTC) with an efficient relayingprotocol, referred to as amplify-and-forward and decode-and-forward (DF-AF) selectionrelaying, has not received much attention yet. In the DF-AF selectionrelaying-aided DSTC transmissions, each relay could adaptively process the received signal according to its decoding state to improve the performance. In this study, the authors analyse the pairwise error probability (PEP) performance, the diversity order and the union bound on the error probability of the DSTC with DF-AF selectionrelaying in cooperative wireless sensor networks. More specifically, by introducing a random variable vector to denote the decoding state of the relays, the upper bounds of PEP are derived first for the DSTC with DF-AF selectionrelaying based on the Chernoff bound. Then, the diversity order and the union bound on the error probability are obtained based on the upper bounds of PEP. Finally, simulation results verify the theoretical analysis and demonstrate that the DSTC with DF-AF selectionrelaying has better error performance than the DSTC with DF protocol and the DSTC based on AF protocol.
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