Optimum SWIPT relaying in bidirectional non-regenerative relay networks

The authors study the optimal design of simultaneous wireless information and power transfer relaying in bidirectional non-regenerative relay networks. They consider both power splitting relaying and time switching relaying. Since there are two opposite traffic flows between two sources, they charac...

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Bibliographic Details
Published in:IET communications 2019-04, Vol.13 (6), p.679-686
Main Authors: Ju, MinChul, Yang, Hong-Chuan
Format: Article
Language:English
Subjects:
bidirectional nonregenerative relay networks
energy harvesting
independent Rayleigh fading
minimum input radio frequency power level
minimum transmission rate maximisation
nonregenerative relaying
opposite traffic flows
optimum power splitting coefficient
optimum SWIPT relaying
power splitting relaying
power transfer relaying
probability
radiofrequency power transmission
Rayleigh channels
relay networks (telecommunication)
relaying strategies
Research Article
resulting maximum transmission rate expressions
RF energy harvesting circuit
simultaneous wireless information‐and‐power transfer relaying
telecommunication power management
telecommunication switching
telecommunication traffic
time switching coefficient
time switching relaying
transmission rate performance
turn‐on probability
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Summary:The authors study the optimal design of simultaneous wireless information and power transfer relaying in bidirectional non-regenerative relay networks. They consider both power splitting relaying and time switching relaying. Since there are two opposite traffic flows between two sources, they characterise the transmission rate performance by the minimum rate of two opposite traffic flows. Specifically, they first obtain closed-form expressions for the optimum power splitting and time switching coefficients to maximise the minimum transmission rate of bidirectional non-regenerative relaying. They also derive the resulting maximum transmission rate expressions. Furthermore, they consider a minimum input radio frequency (RF) power level to turn on diodes, and derive the turn-on probability of the RF energy harvesting circuit when two channels experience independent Rayleigh fading. Numerical results confirm that the authors' analyses exactly match with simulation results and that the two relaying strategies with optimum coefficients give almost the same transmission rate performance.
ISSN:1751-8628
1751-8636
1751-8636
DOI:10.1049/iet-com.2018.5580