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In this paper, we investigate cyclic prefixed single carrier block transmission for asynchronous wireless relay networks. To avoid channel estimation at the receiver, a simple frequency-domain differential encoding and decoding scheme is proposed for asynchronous relaying. Specifically, a block-by-block frequency domain differential encoder is employed at the source node, while joint frequency domain...
In recent years, issues of Wireless Sensor Networks (WSNs) have been widely studied. The energy is limited in WSNs. However, it always takes much energy to achieve highly accurate time synchronization. In this paper, a Spanning Tree-based Energy-efficient Time Synchronization (STETS) strategy for WSNs is proposed. In STETS, only a small number of sensor nodes in the WSN have the privilege to send...
In wireless body sensor networks (WBSN) and wireless body area networks (WBAN), sensor nodes have different bandwidth requirements, therefore, heterogeneous traffic is created. In this paper, we propose a statistical medium access control (MAC) protocol with periodic synchronization for use in heterogeneous traffic networks based on human body communication (HBC). The MAC protocol is designated to...
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