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      A Tutorial on Nonorthogonal Multiple Access for 5G and Beyond

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          Abstract

          Today’s wireless networks allocate radio resources to users based on the orthogonal multiple access (OMA) principle. However, as the number of users increases, OMA based approaches may not meet the stringent emerging requirements including very high spectral efficiency, very low latency, and massive device connectivity. Nonorthogonal multiple access (NOMA) principle emerges as a solution to improve the spectral efficiency while allowing some degree of multiple access interference at receivers. In this tutorial style paper, we target providing a unified model for NOMA, including uplink and downlink transmissions, along with the extensions to multiple input multiple output and cooperative communication scenarios. Through numerical examples, we compare the performances of OMA and NOMA networks. Implementation aspects and open issues are also detailed.

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          Capacity of Multi-antenna Gaussian Channels

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            Cooperative Diversity in Wireless Networks: Efficient Protocols and Outage Behavior

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              What Will 5G Be?

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                Author and article information

                Journal
                Wireless Communications and Mobile Computing
                Wireless Communications and Mobile Computing
                Hindawi Limited
                1530-8669
                1530-8677
                June 28 2018
                June 28 2018
                : 2018
                : 1-24
                Affiliations
                [1 ]Electronics Engineering Department, Gebze Technical University, Gebze, 41400 Kocaeli, Turkey
                [2 ]Electrical and Electronics Engineering Department, Ömer Halisdemir University, 51240 Niğde, Turkey
                [3 ]Department of Communications and Electronics Engineering, Istanbul Technical University, 34469 Istanbul, Turkey
                Article
                10.1155/2018/9713450
                7f0bd2bf-fc82-4cca-855c-c589a460d8e8
                © 2018

                http://creativecommons.org/licenses/by/4.0/

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