Resource allocation in OFDMA-based wireless-powered cooperative sensor networks

Lohani, Sudha; Mallick, Shankhanaad; Hossain, Ekram; Bhargava, V.K.

doi:10.1109/wiecon-ece.2015.7444000

Cited by 2 publications

(2 citation statements)

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“…The AP is connected to a constant power supply, and the broadcast energy over RF signals is assumed to be fixed on a stable level for all sensors. In this paper, we assume that the AP can be serve as a sink node [ 4 ] for information transmission, which operates on 2.4 GHz. Then all the sensors can transmit information to the AP directly.…”

Section: System Model and Problem Formulationmentioning

confidence: 99%

“…In a traditional wireless sensor network, the wireless sensors should constantly transmit the collected information to the access point. Meanwhile, they either have limited battery energy, or are powered by grid energy sources [ 3 , 4 ]. For the wireless sensors with limited battery power, their working time is restricted by their limited energy.…”

Section: Introductionmentioning

confidence: 99%

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Cooperative Dynamic Game-Based Optimal Power Control in Wireless Sensor Network Powered by RF Energy

Wang

Zhou

2018

Sensors

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This paper focuses on optimal power control in wireless sensor networks powered by RF energy, under the simultaneous wireless information and power transfer (SWIFT) protocol, where the information and power can be transmitted at the same time. We aim to maximize the utility for each sensor through the optimal power control, considering the influences of both the SINR and the harvested energy. The utility maximization problem is formulated as a cooperative dynamic game of a given time duration. All the sensors cooperate together to control their transmission power to maximize the utility and agree to act cooperatively so that a team optimum can be achieved. As a result, a feedback Nash equilibrium solution for each sensor is given based on the dynamic programming theory. Simulation results verify the effectiveness of the proposed approach, by comparing the grand coalition solutions with the non-cooperative solutions.

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Section: System Model and Problem Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%