Virtual MIMO Protocol Based on Clustering for Wireless Sensor Network
ISCC '05 Proceedings of the 10th IEEE Symposium on Computers and Communications
A New Optimization Approach for Energy Consumption within Wireless Sensor Networks
AICT '07 Proceedings of the The Third Advanced International Conference on Telecommunications
Evaluating Energy Consumption in Wireless Sensor Networks Applications
DSD '07 Proceedings of the 10th Euromicro Conference on Digital System Design Architectures, Methods and Tools
An application-specific protocol architecture for wireless microsensor networks
IEEE Transactions on Wireless Communications
Virtual MIMO-based cooperative communication for energy-constrained wireless sensor networks
IEEE Transactions on Wireless Communications
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
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This paper presents a cooperative single-input multiple-output (SIMO) transmission scheme for wireless sensor networks (WSNs), where the number of antennas and the constellation size of modulation are jointly optimized for different transmission distances such that the energy consumption is minimized. As compared to previous cooperative MIMO schemes for WSNs, the proposed one achieves higher energy efficiency and has a smaller critical distance above which cooperative MIMO/SIMO outperforms single-input single-output (SISO). The proposed optimization method is further extended to a clustered multi-hop WSN scenario. Through joint optimization of the number of transmitter antennas, the number of receiver antennas, the constellation size, and the hop length, we derive an energy-efficient clustered cooperative SIMO multi-hop scheme. Numerical results show that the proposed scheme not only reduces the overall energy consumption but also balances the energy consumption among clusters.