A Fairness-Throughput Tradeoff Perspective on NOMA Multiresolution Broadcasting
We propose an analytical framework for characterizing the tradeoff between fairness and throughput that arises in a cellular or satellite downlink when multicast information is encoded in two resolution levels (high versus low priority information). Given a target fairness (measured in terms of the...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Centre Tecnològic de Telecomunicacions de Catalunya (CTTC) |
| Repositorio: | r-CTTC. Repositorio Institucional Producción Científica del Centre Tecnològic de Telecomunicacions de Catalunya (CTTC) |
| OAI Identifier: | oai:cttc.fundanetsuite.com:p1453 |
| Acceso en línea: | https://cttc.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1453 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056351641&doi=10.1109%2fTBC.2018.2876807&partnerID=40&md5=67a2a8c15f9fd20e2a4c53205c012685 |
| Access Level: | acceso abierto |
| Palabra clave: | Broadcasting Codes (symbols) Encoding (symbols) Quality of service Receivers (containers) Throughput fairness Multi resolutions Multilevel coding Multiple access NOMA Non orthogonal multiple accesses (NOMA) Signal resolution Signal receivers |
| Sumario: | We propose an analytical framework for characterizing the tradeoff between fairness and throughput that arises in a cellular or satellite downlink when multicast information is encoded in two resolution levels (high versus low priority information). Given a target fairness (measured in terms of the ratio between the information rates of low versus high resolution stream), the operator seeks to optimize the modulation and coding schemes so as to maximize the average cell throughput. Viewing operating points as fairness-throughput pairs allows to meaningfully quantify and interpret the superiority of non-orthogonal multiple access techniques such as superposition coding against simple orthogonal time division. The optimal fairness-throughput tradeoff curve for superposition coding versus time division is derived in the Gaussian setting. A practical implementation with 16-QAM constellations and multilevel coding is proposed and its tradeoff curve is numerically evaluated. © 1963-12012 IEEE. |
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