Evaluation of link level performance considering EVM of transmit signal for downlink NOMA

Kenta Mayama, Kohei Akimoto, Suguru Kameda, Noriharu Suematsu

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

2 Citations (Scopus)


In this paper, we investigate the link level performance considering the influence of the error vector magnitude (EVM) of a transmit signal in a downlink non-orthogonal multiple access (NOMA) with two users. The motivation of this work is that to clarify the impact of the distortion of the transmit signal, which is expressed as the EVM, on the reception performance of each user equipment (UE). Results show that the performance of the near-base-station UE, which implements a successive interference cancellation (SIC), is deteriorated as the EVM increases, and that the amount of the deterioration rapidly increases as the modulation level is higher. In contrast, the performance of the far-base-station UE, which does not implement the SIC, is less affected even with the large EVM. Furthermore, we also show that the downlink NOMA requires lower EVM values than the downlink orthogonal multiple access (OMA), when comparing them at the same modulation level. Accordingly, a high quality radio frequency (RF) transmitter will be required for the introduction of NOMA to the next generation mobile communication systems.

Original languageEnglish
Title of host publication2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages3
ISBN (Electronic)9784902339451
Publication statusPublished - 2019 Jan 16
Event30th Asia-Pacific Microwave Conference, APMC 2018 - Kyoto, Japan
Duration: 2018 Nov 62018 Nov 9

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC


Conference30th Asia-Pacific Microwave Conference, APMC 2018


  • Allocated power ratio
  • EVM
  • NOMA
  • SIC

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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