Rate splitting for asynchronous uplink NOMA systems with cyclic prefixed single carrier

Hongwu Liu, Theodoros A. Tsiftsis, Kyeong Jin Kim, Kyung Sup Kwak, H. Vincent Poor

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

1 Scopus citations

Abstract

To alleviate the strict synchronization requirements and avoid the high peak-to-average power issue, asynchronous cyclic prefixed single carrier (CP-SC) transmission is applied for an uplink NOMA communication system. In this paper, we investigate rate splitting (RS) to improve the outage performance of the considered system. Two RS schemes, namely, the fixed RS and cognitive RS schemes, are proposed under back-off power control. With the aid of frequency-domain equalization, successive interference cancellation (SIC) is applied at the base station for recovering the desired signal. Under frequency-selective fading channels, closed-form expressions for the outage probabilities are derived for both near and far users achieved by asynchronous CP-SC transmission with and without RS, respectively. Motivated by the cognitive radio concept, the cognitive RS scheme implements the power allocation to sequentially guarantee the outage performance of the virtual primary, secondary, and tertiary users according to the SIC processing order. The enhanced outage performance achieved by the fixed RS and cognitive RS schemes are corroborated by Monte Carlo simulation results.

Original languageEnglish (US)
Title of host publication2019 IEEE International Conference on Communications Workshops, ICC Workshops 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728123738
DOIs
StatePublished - May 2019
Event2019 IEEE International Conference on Communications Workshops, ICC Workshops 2019 - Shanghai, China
Duration: May 20 2019May 24 2019

Publication series

Name2019 IEEE International Conference on Communications Workshops, ICC Workshops 2019 - Proceedings

Conference

Conference2019 IEEE International Conference on Communications Workshops, ICC Workshops 2019
CountryChina
CityShanghai
Period5/20/195/24/19

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Hardware and Architecture
  • Aerospace Engineering

Keywords

  • NOMA
  • Outage probability
  • Rate splitting (RS)
  • Synchronization

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  • Cite this

    Liu, H., Tsiftsis, T. A., Kim, K. J., Kwak, K. S., & Poor, H. V. (2019). Rate splitting for asynchronous uplink NOMA systems with cyclic prefixed single carrier. In 2019 IEEE International Conference on Communications Workshops, ICC Workshops 2019 - Proceedings [8756819] (2019 IEEE International Conference on Communications Workshops, ICC Workshops 2019 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICCW.2019.8756819