ETRI Journal (Oct 2020)

Improving PAPR performance of filtered OFDM for 5G communications using PTS

  • Yasir Amer Al‐Jawhar,
  • Khairun N. Ramli,
  • Montadar Abas Taher,
  • Nor Shahida M. Shah,
  • Salama A. Mostafa,
  • Bashar Ahmed Khalaf

DOI
https://doi.org/10.4218/etrij.2019-0358
Journal volume & issue
Vol. 43, no. 2
pp. 209 – 220

Abstract

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The filtered orthogonal frequency division multiplexing (F‐OFDM) system has been recommended as a waveform candidate for fifth‐generation (5G) communications. The suppression of out‐of‐band emission (OOBE) and asynchronous transmission are the distinctive features of the filtering‐based waveform frameworks. Meanwhile, the high peak‐to‐average power ratio (PAPR) is still a challenge for the new waveform candidates. Partial transmit sequence (PTS) is an effective technique for mitigating the trend of high PAPR in multicarrier systems. In this study, the PTS technique is employed to reduce the high PAPR value of an F‐OFDM system. Then, this system is compared with the OFDM system. In addition, the other related parameters such as frequency localization, bit error rate (BER), and computational complexity are evaluated and analyzed for both systems with and without PTS. The simulation results indicate that the F‐OFDM based on PTS achieves higher levels of PAPR, BER, and OOBE performances compared with OFDM. Moreover, the BER performance of F‐OFDM is uninfluenced by the use of the PTS technique.

Keywords