Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 34,
  • Issue 23,
  • pp. 5516-5525
  • (2016)

Modulation Designs for Visible Light Communications With Signal-Dependent Noise

Not Accessible

Your library or personal account may give you access

Abstract

This paper proposes efficient modulation design methods for single-carrier and multicarrier visible light communication systems with signal-dependent shot noise (SDSN). Improved constellations are obtained through solving optimization problems aiming at minimizing the system symbol error rate, subject to lighting constraints. For single-carrier systems, maximum likelihood based detection, is applied. Constellation and threshold values are optimized jointly. The proposed method outperforms both the uniform signaling and the square-root signaling. It is also observed that the uniform signaling outperforms the square-root signaling through the medium-to-high signal to noise region, while the latter performs better in lower SNR region. For multicarrier systems, we formulate a new channel model with the SDSN taken into account. By maximizing the minimum Euclidean distance between the symbols, improved constellations are designed under different lighting constraints. Furthermore, the multicarrier part of design embraces the DC-informative design framework, and thus achieve high power efficiency. The performance gain of our DC-informative optical OFDM (DCIO-OFDM) over OFDM-QPSK ranges from 5 to 30dB even in moderate dimensional signal space.

© 2016 IEEE

PDF Article
More Like This
Binary signaling design for visible light communication: a deep learning framework

Hoon Lee, Inkyu Lee, Tony Q. S. Quek, and Sang Hyun Lee
Opt. Express 26(14) 18131-18142 (2018)

Superposed constellation design for spatial multiplexing visible light communication systems

Manh Le-Tran and Sunghwan Kim
Opt. Express 28(25) 38293-38303 (2020)

Efficient signal design and optimal power allocation for visible light communication attocell systems

Zheng-Guo Sun, Hongyi Yu, and Yi-Jun Zhu
Appl. Opt. 56(32) 8959-8968 (2017)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved