Wavelet-Transform-Based Sparse Code Multiple Access for Power Line Communicationopen access
- Authors
- Sarwar, Muhammad Sajid; Baig, Sobia; Asif, Hafiz M.; Raahemifar, Kaamran; Al-Busaidi, Samir
- Issue Date
- Aug-2022
- Publisher
- MDPI
- Keywords
- Fast Fourier Transform; interuser interference; nonorthogonal multiple access; orthogonal frequency division multiplexing; Power Line Communication; pulse-shaping schemes; Sparse Code Multiple Access; discrete wavelet transform
- Citation
- ELECTRONICS, v.11, no.16
- Journal Title
- ELECTRONICS
- Volume
- 11
- Number
- 16
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/28395
- DOI
- 10.3390/electronics11162618
- ISSN
- 2079-9292
2079-9292
- Abstract
- 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.
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