2019
DOI: 10.1002/dac.3993
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A POMDP‐based long‐term transmission rate maximization for cognitive radio networks with wireless‐powered ambient backscatter

Abstract: SummaryWireless energy harvesting enables wireless‐powered communications to accommodate data services in a self‐sustainable manner over a long operational time. Along with energy harvesting, an ambient backscatter technique helps a secondary transmitter reflect existing radio frequency (RF) signal sources to communicate with a secondary receiver when the primary channel (PC) is utilized. However, secondary system performance is significantly affected by factors such as the availability of the primary channel,… Show more

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Cited by 6 publications
(2 citation statements)
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“…Along with the rapid proliferation of wireless communication applications, most battery-limited devices become useless if their battery power is depleted. As one of the remedies, energy harvesting (EH) exploits ambient energy resources to replenish batteries, such as solar energy [20], radio frequency (RF) signals [21], and both non-RF and RF energy harvesting [22], etc. Among various kinds of renewable energy resources, solar power has been considered one of the most effective energy sources for wireless devices.…”
Section: Introductionmentioning
confidence: 99%
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“…Along with the rapid proliferation of wireless communication applications, most battery-limited devices become useless if their battery power is depleted. As one of the remedies, energy harvesting (EH) exploits ambient energy resources to replenish batteries, such as solar energy [20], radio frequency (RF) signals [21], and both non-RF and RF energy harvesting [22], etc. Among various kinds of renewable energy resources, solar power has been considered one of the most effective energy sources for wireless devices.…”
Section: Introductionmentioning
confidence: 99%
“…Since the information regarding network dynamics (e.g., harvested energy distribution, primary user's behavior) is sometimes unavailable in the cognitive radio system, researchers usually formulate optimization problems as the framework of a Markov decision process (MDP) [20,22,26,27]. Reinforcement learning is one of the potential approaches to obtaining the optimal solution for an MDP problem by interacting with the environment without having prior information about the network dynamics or without any supervision [28][29][30].…”
Section: Introductionmentioning
confidence: 99%