NDLI: Low-complexity user pairing and power allocation algorithm for 5G cellular network non-orthogonal multiple access

Content Provider	IET Digital Library
Author	He, J. Tang, Z.
Abstract	Non-orthogonal multiple access (NOMA) is a candidate technology for the 5th generation cellular networks to reduce the big gap between network capacity and fast growing traffic. It applies superposition coding in transmitters and successive interference cancellation at the receivers to cancel intra-cell interference. The same frequency resource can be allocated simultaneously to multiple intra-cell users, holding large potentials on improving network performance. A major technical challenge of NOMA is on user pairing and power allocation (UPPA). Most of existing UPPA algorithms are based on exhaustive search with extensive computation. A new algorithm, which has the lowest computation complexity achievable for NOMA UPPA is proposed. The main idea is to pair the first users having the highest proportional fairness priority coefficient with potential second users having the highest channel conditions. A fixed power allocation strategy is adopted. The proposed algorithm is significantly faster than existing algorithms without sacrificing NOMA throughput gain.
Starting Page	626
Ending Page	627
Page Count	2
ISSN	00135194
Volume Number	53
e-ISSN	1350911X
Issue Number	Issue 9, Apr (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/53/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2016.4190
Journal	Electronics Letters
Publisher Date	2017-03-27
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	5G Mobile Communication 5th Generation Cellular Network Cellular Radio Combinatorial Mathematics Communication Complexity Computational Complexity Electromagnetic Compatibility Exhaustive Search Frequency Resource Interference Interference Suppression Intracell Interference Cancellation Low-complexity User Pairing Mobile Radio System Multi-access System Multiple Access Communication Multiuser Channel NOMA Nonorthogonal Multiple Access Optimisation Technique Power Allocation Algorithm Proportional Fairness Priority Coefficient Radio Frequency Interference Radio Receiver Radio Transmitters Receiver Search Problem Successive Interference Cancellation Superposition Coding Telecommunication Traffic Transmitter UPPA Algorithm User Pairing And Power Allocation Wireless Channel
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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