NDLI: Resource allocation in power domain NOMA-based cooperative multicell networks

Content Provider	IET Digital Library
Author	Nazari, Ali Javan, Mohammad Reza Hosseini, Shima Salar
Abstract	In this paper, we propose a novel resource allocation scheme for non-orthogonal multiple access (NOMA) based cooperative cellular networks where in each cell, two pairs of transmitter–receiver want to communicate via the base station (BS) which serves as a decode-and-forward (DF) relay. In the first hop, the transmitters simultaneously transmit their information and the BS applies joint decoding method. The BS transmits the received information towards the receivers based on NOMA technique. The receivers apply the successive interference cancellation (SIC) where the SIC ordering of receivers is determined based on the direct channel gain. We formulate the resource allocation problem as an optimization problem which is non-convex. To tackle the non-convexity, we adopt the successive convex approximation (SCA) with difference of two concave functions (D.C.) as the approximation technique. We also study the computational complexity of our proposed scheme. Finally, we study the performance of our scheme by simulations and compare it with existing transmission schemes like the orthogonal frequency multiple access (OFDMA) and the case where both of the first hop and the second hop adopt PD-NOMA as well as the case where a special sort of subcarrier pairing is performed between the first and second hops.
Starting Page	1162
Ending Page	1168
Page Count	7
ISSN	17518628
Volume Number	14
e-ISSN	17518636
Issue Number	Issue 7, Apr (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/14/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2019.0624
Journal	IET Communications
Publisher Date	2020-01-31
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Approximation Technique Approximation Theory Base Station Cellular Radio Convex Programming Cooperative Communication Decode And Forward Communication Electromagnetic Compatibility Interference Interference Suppression Interpolation And Function Approximation Joint Decoding Mobile Radio System Multi-access System Multiple Access Communication NOMA Technique Nonconvex Nonconvexity Nonorthogonal Multiple Access-based Wireless Cooperative Multicell Cellular Network Numerical Analysis Optimisation Technique Orthogonal Frequency Division Multiple Access Power Domain NOMA-based Cooperative Multicell Network Radio Receiver Radio Transmitters Received Information Receiver Relay Network Resource Allocation Resource Allocation Problem Resource Allocation Scheme Subcarrier Pairing Successive Convex Approximation Successive Interference Cancellation Telecommunication Transmitter Transmitter–receiver
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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