Closed-Form BER Expression for Fourier and Wavelet Transform-Based Pulse-Shaped Data in Downlink NOMA

Sobia Baig*, Usman Ali, Hafiz M. Asif, Asim Ali Khan, Shahid Mumtaz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

The non-orthogonal multiple access (NOMA) technique is a strong candidate for 5G cellular networks that enable greater multiuser capacity and user fairness through multiplexing in the power domain. The user data are pulse-shaped using the orthogonal frequency-division multiplexing (OFDM) technique based on the fast Fourier transform (FFT) for conventional NOMA. We propose a discrete wavelet transform-based pulse shaping technique for NOMA. We present a closed-form expression of the bit error rate (BER) for FFT-NOMA as well as wavelet-based NOMA (WNOMA) systems. The theoretical and simulation BER results show that WNOMA outperforms FFT-NOMA in additive white Gaussian noise.

Original languageEnglish
Article number8660440
Pages (from-to)592-595
Number of pages4
JournalIEEE Communications Letters
Volume23
Issue number4
DOIs
Publication statusPublished - Apr 2019
Externally publishedYes

Keywords

  • 5G
  • bit error rate
  • non-orthogonal multiple access (NOMA)
  • orthogonal frequency division multiplexing (OFDM)
  • wavelet transform

ASJC Scopus subject areas

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

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