Multi-user detection for the downlink of NOMA systems with multi-antenna schemes and power-efficient amplifiers

Filipe Casal Ribeiro, João Guerreiro, Rui Dinis, Francisco Cercas, Dushantha Nalin K. Jayakody

Research output: Contribution to journalArticle

Abstract

Non-orthogonal multiple access (NOMA) schemes have been recognized as a promising multiple access method for the fifth generation (5G) communication systems. In NOMA, multiple users can share the same physical channel, which allows for a substantial increase in capacity gains when comparing to conventional orthogonal multiple access (OMA) techniques. This paper considers the downlink transmission of NOMA schemes combined with single-carrier (SC) signals. We present a multi-antenna transmission technique that is compatible with highly efficient power amplifiers without requiring any pre-processing. Furthermore, a multi-user detection scheme based on iterative frequency-domain equalization (FDE) is presented. We show that besides the high power-efficiency of the transmission scheme, the system's performance can be close to the matched filter bound (MFB).

Original languageEnglish
Pages (from-to)199-205
Number of pages7
JournalPhysical Communication
Volume33
DOIs
Publication statusPublished - 1 Apr 2019

Fingerprint

Multiuser detection
Antennas
Matched filters
Power amplifiers
Communication systems
Processing

Keywords

  • Efficient power amplification
  • Iterative frequency-domain detection
  • Multi-antenna systems
  • NOMA
  • SC-FDE

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Multi-user detection for the downlink of NOMA systems with multi-antenna schemes and power-efficient amplifiers. / Ribeiro, Filipe Casal; Guerreiro, João; Dinis, Rui; Cercas, Francisco; Jayakody, Dushantha Nalin K.

In: Physical Communication, Vol. 33, 01.04.2019, p. 199-205.

Research output: Contribution to journalArticle

Ribeiro, Filipe Casal ; Guerreiro, João ; Dinis, Rui ; Cercas, Francisco ; Jayakody, Dushantha Nalin K. / Multi-user detection for the downlink of NOMA systems with multi-antenna schemes and power-efficient amplifiers. In: Physical Communication. 2019 ; Vol. 33. pp. 199-205.
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