Time-frequency characteristics and PAPR reduction of OTDM waveform for 5G and beyond


Hamamreh J. M., Arslan H.

10th International Conference on Electrical and Electronics Engineering, ELECO 2017, Bursa, Turkey, 29 November - 02 December 2017, vol.2018-January, pp.681-685 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 2018-January
  • City: Bursa
  • Country: Turkey
  • Page Numbers: pp.681-685
  • Istanbul Medipol University Affiliated: Yes

Abstract

This paper provides an in-depth investigation and analysis on the characteristics of channel-based transform waveforms and their differences from Fourier transform-based waveforms. Particularly, the basis functions of the recently proposed orthogonal transform division multiplexing (OTDM) waveform, which belongs to the category of channel-based transform waveforms, are comprehensively compared with the fixed exponential basis functions of orthogonal frequency division multiplexing (OFDM) waveform, which pertains to the class of Fourier transform-based waveforms. The obtained results show significant differences in the time and frequency characteristics of both classes of the waveforms. Also, the peak-to-average power ratio (PAPR) of OTDM is investigated and compared to OFDM. Then, a new effective technique, referred to as OTDM with edge subcarrier dedication (OTDM-ESD), is proposed for PAPR reduction by exploiting the special characteristics of the effective channel response in OTDM waveform. Simulation results show that the proposed OTDM-ESD technique not only reduces the PAPR, but also enhances the BER performance significantly.