Optimal time allocation for two-way relay channel using physical-layer network coding

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...

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Bibliographic Details
Published in:IET communications Vol. 8; no. 14; pp. 2469 - 2475
Main Authors: Cho, Dae-Soon, Shim, Yeonggyu, Park, Hyuncheol
Format: Journal Article
Language:English
Published: Stevenage The Institution of Engineering and Technology 01.09.2014
John Wiley & Sons, Inc
Subjects:
Allocations
channel allocation
channel coding
channel coefficients
Channels
Coding
first time slot
Mathematical analysis
Mathematical models
network coding
Networks
optimal time allocation scheme
optimal transmit time durations
Optimization
physical‐layer network coding
PNC
Relay
relay networks (telecommunication)
second time slot
sum rate
sum time constraint
transmit power values
two‐way relay channel
TWRC
network coding
physical-layer network coding
two-way relay channel
channel coding
PNC
sum rate
transmit power values
optimal time allocation scheme
first time slot
channel coefficients
TWRC
second time slot
optimal transmit time durations
channel allocation
sum time constraint
relay networks (telecommunication)
ISSN:1751-8628, 1751-8636
Online Access:Get full text
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Summary: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.
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ISSN:1751-8628
1751-8636
DOI:10.1049/iet-com.2014.0253