A Novel Non-DC Biased Intensity Modulated Indoor MIMO-VLC System Using Walsh Precoder
In this paper, we propose an indoor visible light communication (VLC) system which makes use of Walsh precoding and multiple light-emitting diodes (LEDs) at the transmitter for multiplexing the data. The proposed VLC system is based on intensity modulation and uses the notion of spatial modulation f...
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Series: | Wireless Communications and Mobile Computing |
Online Access: | http://dx.doi.org/10.1155/2020/1437049 |
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doaj-0371391abb8247a4ad1b46c24543d54b2020-11-25T03:45:22ZengHindawi-WileyWireless Communications and Mobile Computing1530-86691530-86772020-01-01202010.1155/2020/14370491437049A Novel Non-DC Biased Intensity Modulated Indoor MIMO-VLC System Using Walsh PrecoderP. Muneer0V. P. Thafasal Ijyas1Mohamed Abbas2Hassen Loukil3Ali Algahtani4Amir Kessentini5Abdul Wase Mohammed6Electrical Engineering Department, College of Engineering, King Khalid University, Abha 61413, Aseer, Saudi ArabiaElectrical Engineering Department, College of Engineering, King Khalid University, Abha 61413, Aseer, Saudi ArabiaElectrical Engineering Department, College of Engineering, King Khalid University, Abha 61413, Aseer, Saudi ArabiaElectrical Engineering Department, College of Engineering, King Khalid University, Abha 61413, Aseer, Saudi ArabiaDepartment of Mechanical Engineering, College of Engineering, King Khalid University, Abha, 61413 Asir, Saudi ArabiaDepartment of Mechanical Engineering, College of Engineering, King Khalid University, Abha, 61413 Asir, Saudi ArabiaElectrical Engineering Department, College of Engineering, King Khalid University, Abha 61413, Aseer, Saudi ArabiaIn this paper, we propose an indoor visible light communication (VLC) system which makes use of Walsh precoding and multiple light-emitting diodes (LEDs) at the transmitter for multiplexing the data. The proposed VLC system is based on intensity modulation and uses the notion of spatial modulation for communicating the positive and negative values of the synthesized transmit signal using signal processing technique at the transmitter. We also illustrate the flexibility, ability, and easiness of the system to configure well in a multiuser environment. We have also developed a near-maximum likelihood (ML) detection technique for efficiently decoding the data bits at the receiver. The proposed near-ML reduces the search space involved in ML technique by using the initial ZF solution. The results of the simulation studies illustrate that the proposed technique offers a higher data rate and good bit error rate (BER) performance in indoor VLC environments.http://dx.doi.org/10.1155/2020/1437049 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
P. Muneer V. P. Thafasal Ijyas Mohamed Abbas Hassen Loukil Ali Algahtani Amir Kessentini Abdul Wase Mohammed |
spellingShingle |
P. Muneer V. P. Thafasal Ijyas Mohamed Abbas Hassen Loukil Ali Algahtani Amir Kessentini Abdul Wase Mohammed A Novel Non-DC Biased Intensity Modulated Indoor MIMO-VLC System Using Walsh Precoder Wireless Communications and Mobile Computing |
author_facet |
P. Muneer V. P. Thafasal Ijyas Mohamed Abbas Hassen Loukil Ali Algahtani Amir Kessentini Abdul Wase Mohammed |
author_sort |
P. Muneer |
title |
A Novel Non-DC Biased Intensity Modulated Indoor MIMO-VLC System Using Walsh Precoder |
title_short |
A Novel Non-DC Biased Intensity Modulated Indoor MIMO-VLC System Using Walsh Precoder |
title_full |
A Novel Non-DC Biased Intensity Modulated Indoor MIMO-VLC System Using Walsh Precoder |
title_fullStr |
A Novel Non-DC Biased Intensity Modulated Indoor MIMO-VLC System Using Walsh Precoder |
title_full_unstemmed |
A Novel Non-DC Biased Intensity Modulated Indoor MIMO-VLC System Using Walsh Precoder |
title_sort |
novel non-dc biased intensity modulated indoor mimo-vlc system using walsh precoder |
publisher |
Hindawi-Wiley |
series |
Wireless Communications and Mobile Computing |
issn |
1530-8669 1530-8677 |
publishDate |
2020-01-01 |
description |
In this paper, we propose an indoor visible light communication (VLC) system which makes use of Walsh precoding and multiple light-emitting diodes (LEDs) at the transmitter for multiplexing the data. The proposed VLC system is based on intensity modulation and uses the notion of spatial modulation for communicating the positive and negative values of the synthesized transmit signal using signal processing technique at the transmitter. We also illustrate the flexibility, ability, and easiness of the system to configure well in a multiuser environment. We have also developed a near-maximum likelihood (ML) detection technique for efficiently decoding the data bits at the receiver. The proposed near-ML reduces the search space involved in ML technique by using the initial ZF solution. The results of the simulation studies illustrate that the proposed technique offers a higher data rate and good bit error rate (BER) performance in indoor VLC environments. |
url |
http://dx.doi.org/10.1155/2020/1437049 |
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