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Joint Optimization of Power and Channel Allocation with Non-orthogonal Multiple Access for 5G Cellular Systems
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, Faculty of Science & Engineering. University of Maryland, MD 20742 USA.
ASTAR, Singapore.
ASTAR, Singapore.
2015 (English)In: 2015 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM), IEEE , 2015Conference paper, Published paper (Refereed)
Abstract [en]

Non-orthogonal multiple access (NOMA) with successive interference cancellation (SIC), is considered as a candidate multi-user access scheme for 5G cellular systems. In this paper, we provide theoretical insights and solution algorithm for optimizing multi-user power and channel allocation in NOMA systems. We mathematically formulate the NOMA resource allocation problem and prove its NP-hardness. For solving the problem, we propose an algorithm combining Lagrangian duality and dynamic programming to deliver a competitive suboptimal solution. Numerical results demonstrate that the proposed algorithmic solution can significantly improve the system performance over orthogonal frequency division multiple access (OFDMA) as well as over other existing NOMA resource allocation scheme.

Place, publisher, year, edition, pages
IEEE , 2015.
Keyword [en]
Non-orthogonal multiple access (NOMA); successive interference cancellation (SIC); 5G; power allocation
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:liu:diva-132887DOI: 10.1109/GLOCOM.2015.7417761ISI: 000382389305015ISBN: 978-1-4799-5952-5 (print)OAI: oai:DiVA.org:liu-132887DiVA: diva2:1052289
Conference
IEEE Global Communications Conference (GLOBECOM)
Available from: 2016-12-06 Created: 2016-11-30 Last updated: 2016-12-06

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Citation style
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