Power Optimization of a Three-Node Two-Way Relay-Assisted Power-Line Communication System

Liong, Ann Gie; Gopal, Lenin; Rong, Yue; Juwono, Filbert; Chiong, Choo W. R.

doi:10.1109/TPWRD.2022.3181297

Access Status

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Authors

Liong, Ann Gie

Gopal, Lenin

Rong, Yue

Juwono, Filbert

Chiong, Choo W. R.

Date

2022

Type

Journal Article

Metadata

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Citation

Liong, A.G.A. and Gopal, L. and Rong, Y. and H. Juwono, F. and Chiong, C.W.R. 2022. Power Optimization of a Three-Node Two-Way Relay-Assisted Power-Line Communication System. IEEE Transactions on Power Delivery.

Source Title

IEEE Transactions on Power Delivery

DOI

10.1109/TPWRD.2022.3181297

ISSN

0885-8977

Faculty

Faculty of Science and Engineering

School

School of Elec Eng, Comp and Math Sci (EECMS)

URI

http://hdl.handle.net/20.500.11937/88922

Collection

Curtin Research Publications

Abstract

Two-way communication links are required in power-line communication (PLC) as a smart grid enabler. As PLC systems suffer from harsh power-line channels, it is beneficial to provide spatial diversity to improve the system performance. Using a two-way multicarrier relay configuration, this paper investigates the power optimization of a relay-assisted PLC system with the consideration of the quality of service (QoS) constraints. Since the QoS constrained power allocation problem is highly non-convex, an alternating optimization (AO) algorithm is proposed to decompose the optimization problem into subproblems. Simulation results show the proposed system is able to reduce the total power required by the system for about 40% compared to the conventional bidirectional direct transmission (BDT) system under the same QoS requirement. Further, the proposed system consumes less power compared to the relayassisted two-way information exchange (R2WX) system.