Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/12404
ชื่อเรื่อง: Multi-user Secrecy SWIPT for 5G OFDMA Networks with Particle Swarm Optimizations
ผู้แต่ง: Woradit K.
Srirai S.
Kitjarunerungroj S.
Kodmatcha T.
Sangmahamad P.
Keywords: Energy transfer
Frequency division multiple access
Orthogonal frequency division multiplexing
Particle swarm optimization (PSO)
Information and power transfers
Multi-user orthogonal frequency division multiplexing
Operating energies
Power splitting
Power splitting ratio
Received signals
Sub-carrier allocation
Total transmit power
5G mobile communication systems
วันที่เผยแพร่: 2019
บทคัดย่อ: This paper maximizes the minimum downlink secrecy throughput of the multi-user orthogonal frequency division multiplexing access (OFDMA) network with simultaneous wireless information and power transfer (SWIPT), where the optimizers include subcarrier allocation and power splitting ratio. The network is composed of a base station, and several receiver nodes (users). Every user does not have its own power supply, and uses the power splitting scheme to harvest energy and to decode information simultaneously from the received signal. Every user can eavesdrop all other users' subcarriers, and more than one subcarriers can be allocated to a user. We aim to maximize the total instantaneous secrecy rate of the weakest user. All user nodes experience the same path loss and shadowing, but dissimilar fast fading. To jointly allocate subcarriers and find the power splitting ratios for all users, the full search is tedious. Therefore, we propose the algorithm, based on particle swarm optimizations. The obtained average total instantaneous secrecy rate of the weakest user indicate that the total transmit power should be high enough to overcome the minimum operating energy. Increasing the total transmit power beyond a threshold does not increase the average total instantaneous secrecy rate of the weakest user. © 2019 IEEE.
URI: https://ir.swu.ac.th/jspui/handle/123456789/12404
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078007108&doi=10.1109%2fICCE-Asia46551.2019.8941603&partnerID=40&md5=4648646b663a056f804bb5b9f36c245a
Appears in Collections:Scopus 1983-2021

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