Sum-Rate Maximization of NOMA Systems under Imperfect Successive Interference Cancellation

Islam AbuMahady, Ebrahim Bedeer Mohamed, Salama Ikki, Halim Yanikomeroglu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This letter addresses the sum-rate maximization for a downlink non-orthogonal multiple access (NOMA) system in the presence of imperfect successive interference cancellation (SIC). We assume that the NOMA users adopt improper Gaussian signaling (IGS), and hence derive new expressions of their rates under residual interference from imperfect SIC. We optimize the circularity coefficient of the IGS-based NOMA system to maximize its sum-rate subject to quality-of-service requirements. Compared to the NOMA with proper Gaussian signaling, simulation results show that the IGS-based NOMA system demonstrates considerable sum-rate performance gain under imperfect SIC.

LanguageEnglish
Article number8621012
Pages474-477
Number of pages4
JournalIEEE Communications Letters
Volume23
Issue number3
Early online date22 Jan 2019
DOIs
Publication statusPublished - 1 Mar 2019

Fingerprint

Successive Interference Cancellation
Multiple Access
Imperfect
Quality of service
Quality of Service
Interference
Maximise
Optimise
Requirements
Coefficient
Demonstrate
Simulation

Keywords

  • Improper Gaussian Signalling
  • Non-linear optimization
  • NOMA
  • sum-rate
  • imperfect successive interference cancellation
  • non-linear optimization
  • Improper Gaussian signaling

Cite this

AbuMahady, I., Mohamed, E. B., Ikki, S., & Yanikomeroglu, H. (2019). Sum-Rate Maximization of NOMA Systems under Imperfect Successive Interference Cancellation. 23(3), 474-477. [8621012]. https://doi.org/10.1109/LCOMM.2019.2893195
AbuMahady, Islam ; Mohamed, Ebrahim Bedeer ; Ikki, Salama ; Yanikomeroglu, Halim. / Sum-Rate Maximization of NOMA Systems under Imperfect Successive Interference Cancellation. 2019 ; Vol. 23, No. 3. pp. 474-477.
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AbuMahady, I, Mohamed, EB, Ikki, S & Yanikomeroglu, H 2019, 'Sum-Rate Maximization of NOMA Systems under Imperfect Successive Interference Cancellation', vol. 23, no. 3, 8621012, pp. 474-477. https://doi.org/10.1109/LCOMM.2019.2893195

Sum-Rate Maximization of NOMA Systems under Imperfect Successive Interference Cancellation. / AbuMahady, Islam; Mohamed, Ebrahim Bedeer; Ikki, Salama; Yanikomeroglu, Halim.

Vol. 23, No. 3, 8621012, 01.03.2019, p. 474-477.

Research output: Contribution to journalArticle

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