NDLI: Resource allocation for OFDM-based improved DF relaying

Content Provider	IET Digital Library
Author	Qin, Dong Wang, Yuhao Zhou, Tianqing
Abstract	This study considers an improved decode and forward (DF) protocol in an orthogonal frequency division multiplexing-based cooperative system, where the improved DF protocol implies that the source node is allowed to emit the same symbol in the second phase as that in the first phase, irrespective to whether the relay is idle or not. Because rate provision is one of the main design goals in wireless network, the authors construct an optimisation problem to improve the overall sum rate of the system and propose a joint power allocation and subcarrier pairing algorithm. Total power constraint and individual power constraints at the source node and the relay node will be treated differently. Both theoretical analysis and simulation results demonstrate that the authors' proposed joint algorithm for the improved DF protocol drastically harvests remarkable gains from the extra repeat transmission in the second phase and is superior to other existing methods.
Starting Page	2768
Ending Page	2774
Page Count	7
ISSN	17518628
Volume Number	11
e-ISSN	17518636
Issue Number	Issue 18, Dec (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/11/18
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2017.0447
Journal	IET Communications
Publisher Date	2017-10-16
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Cooperative System Decode And Forward Communication Decode And Forward Protocol DF Protocol First Phase Improved DF Relaying Joint Power Allocation Modulation And Coding Method OFDM OFDM Modulation Optimisation Optimisation Problem Optimisation Technique Orthogonal Frequency Division Multiplexing System Protocol Radio Link And Equipment Rate Provision Relay Network Relay Node Resource Allocation Second Phase Source Node Subcarrier Pairing Algorithm Telecommunication Total Power Constraint Wireless Network
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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