Wavelet-Transform-Based Sparse Code Multiple Access for Power Line Communication

Muhammad Sajid Sarwar, Sobia Baig, Hafiz M. Asif*, Kaamran Raahemifar, Samir Al-Busaidi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This paper presents Discrete Wavelet Transformed Sparse Code Multiple Access (DWT-SCMA) in Power Line Communication (PLC) systems. In the present internet of things era, PLC provides an established infrastructure for low-cost and reliable indoor connectivity. PLC systems can benefit from the Sparse Code Multiple Access (SCMA) technique, which allows multiple users to access a frequency slot simultaneously to maximize spectrum efficiency. However, interuser interference arises in SCMA when numerous users map their data to the same frequency resource; this, in turn, is likely to be enhanced by the noisy PLC channel. This article adopts the intriguing aspects of DWT to address the interference difficulties. A mathematical model of the proposed technique is also presented and compared with Fast Fourier Transformed SCMA (FFT-SCMA). In the PLC environment, DWT-SCMA is found to outperform FFT-SCMA.

Original languageEnglish
Article number2618
JournalElectronics (Switzerland)
Issue number16
Publication statusPublished - Aug 2022


  • Fast Fourier Transform
  • Power Line Communication
  • Sparse Code Multiple Access
  • discrete wavelet transform
  • interuser interference
  • nonorthogonal multiple access
  • orthogonal frequency division multiplexing
  • pulse-shaping schemes

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Signal Processing
  • Hardware and Architecture
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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