Wireless sensor networks for habitat monitoring
WSNA '02 Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications
Wireless sensor networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
Energy-Efficient Communication Protocol for Wireless Microsensor Networks
HICSS '00 Proceedings of the 33rd Hawaii International Conference on System Sciences-Volume 8 - Volume 8
Wireless Communications
Cooperative MAC protocol with distributed relay actuation
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Energy-centric enabling tecumologies for wireless sensor networks
IEEE Wireless Communications
Exact symbol error probability of a Cooperative network in a Rayleigh-fading environment
IEEE Transactions on Wireless Communications
Decode-and-Forward Cooperative Diversity with Power Allocation in Wireless Networks
IEEE Transactions on Wireless Communications
Distributed Adaptive Power Allocation for Wireless Relay Networks
IEEE Transactions on Wireless Communications
Improving amplify-and-forward relay networks: optimal power allocation versus selection
IEEE Transactions on Wireless Communications
Distributed power allocation strategies for parallel relay networks
IEEE Transactions on Wireless Communications
Energy-Efficient Cooperative Relaying over Fading Channels with Simple Relay Selection
IEEE Transactions on Wireless Communications
Energy-efficiency of MIMO and cooperative MIMO techniques in sensor networks
IEEE Journal on Selected Areas in Communications
A simple Cooperative diversity method based on network path selection
IEEE Journal on Selected Areas in Communications
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We consider the energy-minimal joint cooperator set selection and power assignment problem in a cooperation scenario with multiple relays, under transmit power constraints, while satisfying a target frame error rate (FER) at the destination receiver. We first derive the FER of a cooperative system and present a simplified calculation that also involves a simple, yet close approximation to the average bit error rate of a multiple input single output system. Our FER calculation facilitates a closed-form solution for the joint optimization problem, resulting in the Optimal Cooperator Selection and Power Assignment (O-CSPA) algorithm. Next, we devise the Distributed Cooperator Selection and Power Assignment (D-CSPA) algorithm in which the relays individually decide to become a cooperator and determine their power levels. We evaluate the performance of O-CSPA and D-CSPA algorithms under several network topologies, varying target FER levels and different power consumption models, by considering the energy dissipated in the transceiver circuits and amplifiers of all involved nodes. We show that both algorithms provide notable energy savings and conclude that the extent of the savings depends significantly on the power consumption model. D-CSPA's performance is shown to be not only close to that of optimal solution, but also robust to errors in channel estimation.