Energy Efficiency of Rate-Splitting Multiple Access, and Performance Benefits over SDMA and NOMA

Yijie Mao, Bruno Clercks, Victor O.K. Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Rate-Splitting Multiple Access (RSMA) is a general and powerful multiple access framework for downlink multi- Antenna systems, and contains Space-Division Multiple Access (SDMA) and Non-Orthogonal Multiple Access (NOMA) as spe- cial cases. RSMA relies on linearly precoded rate-splitting with Successive Interference Cancellation (SIC) to decode part of the interference and treat the remaining part of the interference as noise. Recently, RSMA has been shown to outperform both SDMA and NOMA rate-wise in a wide range of network loads (underloaded and overloaded regimes) and user deployments (with a diversity of channel directions, channel strengths and qualities of channel state information at the transmitter). Moreover, RSMA was shown to provide spectral efficiency and QoS enhancements over NOMA at a lower computational complexity for the transmit scheduler and the receivers. In this paper, we build upon those results and investigate the energy efficiency of RSMA compared to SDMA and NOMA. Considering a multiple-input single-output broadcast channel, we show that RSMA is more energy-efficient than SDMA and NOMA in a wide range of user deployments (with a diversity of channel directions and channel strengths). We conclude that RSMA is more spectrally and energy-efficient than SDMA and NOMA.

Original languageEnglish
Title of host publication2018 15th International Symposium on Wireless Communication Systems, ISWCS 2018
PublisherVDE Verlag GmbH
Volume2018-August
ISBN (Electronic)9781538650059
DOIs
Publication statusPublished - 2018 Oct 12
Externally publishedYes
Event15th International Symposium on Wireless Communication Systems, ISWCS 2018 - Lisbon, Portugal
Duration: 2018 Aug 282018 Aug 31

Other

Other15th International Symposium on Wireless Communication Systems, ISWCS 2018
CountryPortugal
CityLisbon
Period18/8/2818/8/31

Fingerprint

Space division multiple access
Energy efficiency
interference
energy
efficiency
performance
broadcast
recipient
regime
Channel state information
Transmitters
Computational complexity
Quality of service
Antennas

Keywords

  • Energy efficiency
  • Noma
  • Rate-splitting multiple access
  • Sdma

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Communication

Cite this

Mao, Y., Clercks, B., & Li, V. O. K. (2018). Energy Efficiency of Rate-Splitting Multiple Access, and Performance Benefits over SDMA and NOMA. In 2018 15th International Symposium on Wireless Communication Systems, ISWCS 2018 (Vol. 2018-August). [8491100] VDE Verlag GmbH. https://doi.org/10.1109/ISWCS.2018.8491100

Energy Efficiency of Rate-Splitting Multiple Access, and Performance Benefits over SDMA and NOMA. / Mao, Yijie; Clercks, Bruno; Li, Victor O.K.

2018 15th International Symposium on Wireless Communication Systems, ISWCS 2018. Vol. 2018-August VDE Verlag GmbH, 2018. 8491100.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Mao, Y, Clercks, B & Li, VOK 2018, Energy Efficiency of Rate-Splitting Multiple Access, and Performance Benefits over SDMA and NOMA. in 2018 15th International Symposium on Wireless Communication Systems, ISWCS 2018. vol. 2018-August, 8491100, VDE Verlag GmbH, 15th International Symposium on Wireless Communication Systems, ISWCS 2018, Lisbon, Portugal, 18/8/28. https://doi.org/10.1109/ISWCS.2018.8491100
Mao Y, Clercks B, Li VOK. Energy Efficiency of Rate-Splitting Multiple Access, and Performance Benefits over SDMA and NOMA. In 2018 15th International Symposium on Wireless Communication Systems, ISWCS 2018. Vol. 2018-August. VDE Verlag GmbH. 2018. 8491100 https://doi.org/10.1109/ISWCS.2018.8491100
Mao, Yijie ; Clercks, Bruno ; Li, Victor O.K. / Energy Efficiency of Rate-Splitting Multiple Access, and Performance Benefits over SDMA and NOMA. 2018 15th International Symposium on Wireless Communication Systems, ISWCS 2018. Vol. 2018-August VDE Verlag GmbH, 2018.
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