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Opportunistic CR-NO...
Opportunistic CR-NOMA Transmissions for Zero-Energy Devices : A DRL-driven Optimization Strategy
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Ullah, Syed Asad (författare)
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Zeb, Shah (författare)
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- Mahmood, Aamir, 1980- (författare)
- Mittuniversitetet,Institutionen för data- och elektroteknik (2023-)
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Hassan, Syed Ali (författare)
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- Gidlund, Mikael, 1972- (författare)
- Mittuniversitetet,Institutionen för data- och elektroteknik (2023-)
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: IEEE Wireless Communications Letters. - 2162-2337 .- 2162-2345. ; 12:5, s. 893-897
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- To efficiently accommodate RF energy-harvesting (EH) capable device in a wireless network with prescheduled devices, this letter designs the deep reinforcement learning (DRL)-driven energy-efficient transmission strategy. The transmission strategy handles the EH-device uplink transmissions opportunistically using cognitive radio-inspired non-orthogonal multiple access (CR-NOMA) scheme while maximizing energy efficiency (EE). In this respect, firstly, we formulate the EE optimization problem of the EH-device while considering its RF circuit power consumption. Secondly, we divide the original, non-convex problem into a two-layer optimization problem, and solve it sequentially as i) we theoretically derive the optimal transmit power and time-sharing coefficient parameters from the first layer, and ii) using the derived parameters in the second layer, we solve the one-dimensional continuous space optimization problem through a DRL technique, recognized as a combined experience replay deep deterministic policy gradient (CER-DDPG). Finally, the numerical results show that, under different operational scenarios, the proposed approach outperforms benchmark DDPG and Stochastic algorithms in terms of EE.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Nyckelord
- deep deterministic policy gradient (DDPG)
- energy efficiency (EE)
- Energy harvesting
- NOMA
- non-orthogonal multiple access (NOMA)
- Optimization
- Power demand
- Quality of service
- Radio frequency
- RF energy harvesting (EH)
- Wireless networks
- Zero-energy radio
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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