Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Energy-Efficient Communication Protocol for Wireless Microsensor Networks
HICSS '00 Proceedings of the 33rd Hawaii International Conference on System Sciences-Volume 8 - Volume 8
Cooperative wireless communications: a cross-layer approach
IEEE Wireless Communications
Virtual MIMO-based cooperative communication for energy-constrained wireless sensor networks
IEEE Transactions on Wireless Communications
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
IEEE Communications Magazine
Communication paradigms for sensor networks
IEEE Communications Magazine
A simple transmit diversity technique for wireless communications
IEEE Journal on Selected Areas in Communications
Energy-efficiency of MIMO and cooperative MIMO techniques in sensor networks
IEEE Journal on Selected Areas in Communications
Cooperative Distributed MIMO Channels in Wireless Sensor Networks
IEEE Journal on Selected Areas in Communications
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In this paper, a cross layer approach is used to obtain spatial diversity in physical layer. We develop a low complexity cooperative diversity protocol for Low Energy Adaptive Clustering Hierarchy (LEACH) based wireless sensor networks. A simple modification in clustering algorithm of LEACH protocol is proposed to exploit virtual MIMO based user cooperation. Instead of selecting a single cluster-head at network layer, we proposed M cluster-heads in each cluster to obtain a diversity order of M in long distance communication. Due to the broadcast nature of wireless transmission cluster-heads are able to receive the data from sensor nodes at the same time. This fact ensures the synchronization required to implement a virtual MIMO based space time block code (STBC) in cluster-head to sink node transmission. Analysis and simulation results show that our proposed cooperative LEACH protocol can save a huge amount of energy over LEACH protocol with same data rate, bit error rate, delay and bandwidth requirements.