Energy-efficient Modulation for Visible Light SCMA System with Signal-dependent Noise

Shuping Hu, Qian Gao, Chen Gong, Zhengyuan Xu, Ruben Boluda-Ruiz, Khalid Qaraqe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this paper, we investigate the problem of constellation design for a multi-user visible light communication (VLC) system based on sparse code multiple access (SCMA). The design goal is to maximize energy efficiency of the system and at the same time guarantee the lighting constraints, such that the benefit of SCMA to support massive connectivity is fully exploited. With signal-dependent noise (SDN) considered, we conclude that the conventional minimum Euclidean distance (MED) based criterion is far from optimal, based on which we introduce the rotated MED (R-MED) as the optimization objective to mitigate the constellation shape distortion caused by the SDN. A non-convex optimization is establish accordingly, which is relaxed to a convex problem by iterative linearization. Simulation results show that our design leads to non-trivial performance gain over the MED-based designs for systems where power of the SDN is non-negligible.

Original languageEnglish
Title of host publication2018 11th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538613351
DOIs
Publication statusPublished - 24 Sep 2018
Event11th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2018 - Budapest, Hungary
Duration: 18 Jul 201820 Jul 2018

Other

Other11th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2018
CountryHungary
CityBudapest
Period18/7/1820/7/18

Fingerprint

Modulation
Linearization
Energy efficiency
Communication systems
Lighting

Keywords

  • Constellation design
  • rotated MED
  • SCMA
  • signal-dependent noise
  • visible light communication

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing

Cite this

Hu, S., Gao, Q., Gong, C., Xu, Z., Boluda-Ruiz, R., & Qaraqe, K. (2018). Energy-efficient Modulation for Visible Light SCMA System with Signal-dependent Noise. In 2018 11th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2018 [8471873] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CSNDSP.2018.8471873

Energy-efficient Modulation for Visible Light SCMA System with Signal-dependent Noise. / Hu, Shuping; Gao, Qian; Gong, Chen; Xu, Zhengyuan; Boluda-Ruiz, Ruben; Qaraqe, Khalid.

2018 11th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2018. Institute of Electrical and Electronics Engineers Inc., 2018. 8471873.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hu, S, Gao, Q, Gong, C, Xu, Z, Boluda-Ruiz, R & Qaraqe, K 2018, Energy-efficient Modulation for Visible Light SCMA System with Signal-dependent Noise. in 2018 11th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2018., 8471873, Institute of Electrical and Electronics Engineers Inc., 11th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2018, Budapest, Hungary, 18/7/18. https://doi.org/10.1109/CSNDSP.2018.8471873
Hu S, Gao Q, Gong C, Xu Z, Boluda-Ruiz R, Qaraqe K. Energy-efficient Modulation for Visible Light SCMA System with Signal-dependent Noise. In 2018 11th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2018. Institute of Electrical and Electronics Engineers Inc. 2018. 8471873 https://doi.org/10.1109/CSNDSP.2018.8471873
Hu, Shuping ; Gao, Qian ; Gong, Chen ; Xu, Zhengyuan ; Boluda-Ruiz, Ruben ; Qaraqe, Khalid. / Energy-efficient Modulation for Visible Light SCMA System with Signal-dependent Noise. 2018 11th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2018. Institute of Electrical and Electronics Engineers Inc., 2018.
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