Bandwidth‐ efficient space–time coded cooperation for resource‐constrained networks
Jee‐Hoon Kim, Athanasios V. Vasilakos, Hyoung‐Kyu Song · Wireless Communications and Mobile Computing · 2010
Abstract In cooperative transmission, cooperating nodes must hear the source messages first and forward it to the destination node with decodable composition of symbols. This restriction is one of big questions in cooperative networks since it decreases overall bandwidth‐efficiency. In this paper, we propose a scheme which alleviates it through novel use of dual carrier modulation (DCM) and an adequately designed distributed space–time block code (DSTBC). The proposed scheme achieves comparable error performance to the conventional one while providing 20% higher transmission rate. The performance is always guaranteed by the signal‐to‐noise ratio (SNR) based adaptive cooperation algorithm. Copyright © 2010 John Wiley & Sons, Ltd.