access icon openaccess Power allocation in cooperative sensor networks: a stochastic approximation approach

A power allocation technique based on simultaneous perturbation stochastic approximation is devised for wireless sensor networks. Power is such allocated in source and relay that at receiver the desired combined signal strength is attained. The behaviour of the proposed technique is evaluated in a modified simple carrier sense multiple access-collision avoidance-based access control mechanism along with the greedy forwarding approach. Results show the superior performance of the cooperative relay scheme both in throughput and energy gain.

Inspec keywords: perturbation techniques; greedy algorithms; access control; approximation theory; wireless sensor networks; stochastic processes; cooperative communication

Other keywords: combined signal strength; power allocation technique; wireless sensor networks; greedy forwarding approach; stochastic approximation approach; cooperative sensor networks; cooperative relay scheme; simultaneous perturbation stochastic approximation; carrier sense multiple access-collision avoidance-based access control mechanism

Subjects: Wireless sensor networks; Interpolation and function approximation (numerical analysis); Other topics in statistics

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