Numerology Scheduling for PAPR Reduction in Mixed Numerologies

Memisoglu E., Duranay A. E., ARSLAN H.

IEEE Wireless Communications Letters, vol.10, no.6, pp.1197-1201, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 10 Issue: 6
  • Publication Date: 2021
  • Doi Number: 10.1109/lwc.2021.3061628
  • Journal Name: IEEE Wireless Communications Letters
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
  • Page Numbers: pp.1197-1201
  • Keywords: Peak to average power ratio, OFDM, Time-domain analysis, 5G mobile communication, Frequency division multiplexing, Bandwidth, Time-frequency analysis, OFDM, mixed numerologies, PAPR reduction, scheduling
  • Istanbul Medipol University Affiliated: Yes

Abstract

The flexible mixed-numerology structure with orthogonal frequency division multiplexing (OFDM) waveform is a key enabler to meet the requirements of various applications in fifth-generation (5G) and beyond wireless networks. However, the high peak-to-average power ratio (PAPR) is still one of the main drawbacks and conventional numerology selection can only provide PAPR reduction for the time-domain numerology multiplexing. In this letter, a novel numerology scheduling (NS) method is proposed to provide PAPR reduction for both time-domain and frequency-domain numerology multiplexing scenarios. For the proposed method, the signal with minimum PAPR is selected from a set of signals with different NS. The simulation results and complexity analysis demonstrate that the proposed method with a linearithmic complexity improves PAPR reduction compared to conventional numerology selection.