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Journal Article Optimal Time Allocation for Two-Way Relay Channel Using Physical-Layer Network Coding
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Authors
Dae-Soon Cho, Yeonggyu Shim, Hyuncheol Park
Issue Date
2014-09
Citation
IET Communications, v.8, no.14, pp.2469-2475
ISSN
1751-8628
Publisher
IET
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1049/iet-com.2014.0253
Project Code
14MI9100, Development of 5G Mobile Communication Technologies for Hyper-connected smart services, Chung Hyun Kyu
Abstract
This study proposes an optimal time allocation scheme for two-way relay channel (TWRC) using the physical-layer network coding (PNC). In other words, this study analytically determines the optimal transmit time durations for the first and the second time slot, which maximise the achievable sum rate under a sum time constraint for a given squared magnitude of the channel coefficients and transmit power values. Numerical results show that the achievable sum rate for the proposed optimal time allocation is greater than or equal to that for equal time allocation.
KSP Keywords
Allocation scheme, Channel Coefficients, Numerical results, Transmit power, achievable sum rate, optimal time, physical-layer network coding(PNC), time allocation, time constraint, time slots, two-way relay channel