Indoor broadcasting using visible free space optic over broadband powerline communication

Visible Free Space Optic (VFSO) is a new and attractive technology, which employs visible light generated by white light emitting diode (LED) for optical wireless communications. In addition, it is possible to use ubiquitous powerline cables as a communication medium among other fixed network equipm...

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Main Author:	Alavi Ghahferokhi, Sayed Ehsan
Format:	Thesis
Language:	English
Published:	2012
Subjects:	TK6570 Mobile Communication System
Online Access:	http://eprints.utm.my/id/eprint/31347/1/SayedEhsanAlaviPFKE2012.pdf
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id	my-utm-ep.31347
record_format	uketd_dc
spelling	my-utm-ep.313472018-04-27T01:15:30Z Indoor broadcasting using visible free space optic over broadband powerline communication 2012-07 Alavi Ghahferokhi, Sayed Ehsan TK6570 Mobile Communication System Visible Free Space Optic (VFSO) is a new and attractive technology, which employs visible light generated by white light emitting diode (LED) for optical wireless communications. In addition, it is possible to use ubiquitous powerline cables as a communication medium among other fixed network equipments which is powerline communication (PLC) technology. An integrated system of VFSO and PLC uses existing powerline cables and white LEDs as a communication channel hence it has the advantage of low operating cost and provides easy data transmission. The current integrated system encounters some problems due to PLC multipath, noise, and no practical modeling for white LEDs, which degrades significantly the performance of the whole system. Therefore, this study presents the optimum orthogonal frequency division multiplexing (OFDM) modulating signal power, proper DC biasing point, and LED dynamic range to solve system degradation. Moreover, a practical LED model is also presented, and the performance of the integrated system in terms of OFDM signal power versus bit error rate in the presence of broadband PLC impulsive noise, multipath issue, and additive white Gaussian noise optical channel is studied. Based on indoor applications, the primary purpose for VFSO link is the general lighting designation with the standard brightness level and the secondary purpose is for data transmission. Therefore, to have a high quality VFSO link besides ensuring sufficient horizontal brightness of the place, high data rate of optical communication links with low bit error rate are also achieved. The radiometric parameters of white LEDs using simulation and experiment are reported. Optimum 15dBm OFDM signal power, (3.2V, 350mA) biasing point, and 1Vp-p dynamic range for white LED has the data rate more than 28Mbits/second with the bit error rates lower than 610? . Moreover, at least 400lx of indoor lighting was also fulfilled. So, the new integrated system is considered as a good alternative for other indoor wireless system counterparts. 2012-07 Thesis http://eprints.utm.my/id/eprint/31347/ http://eprints.utm.my/id/eprint/31347/1/SayedEhsanAlaviPFKE2012.pdf application/pdf en public phd doctoral Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK6570 Mobile Communication System
spellingShingle	TK6570 Mobile Communication System Alavi Ghahferokhi, Sayed Ehsan Indoor broadcasting using visible free space optic over broadband powerline communication
description	Visible Free Space Optic (VFSO) is a new and attractive technology, which employs visible light generated by white light emitting diode (LED) for optical wireless communications. In addition, it is possible to use ubiquitous powerline cables as a communication medium among other fixed network equipments which is powerline communication (PLC) technology. An integrated system of VFSO and PLC uses existing powerline cables and white LEDs as a communication channel hence it has the advantage of low operating cost and provides easy data transmission. The current integrated system encounters some problems due to PLC multipath, noise, and no practical modeling for white LEDs, which degrades significantly the performance of the whole system. Therefore, this study presents the optimum orthogonal frequency division multiplexing (OFDM) modulating signal power, proper DC biasing point, and LED dynamic range to solve system degradation. Moreover, a practical LED model is also presented, and the performance of the integrated system in terms of OFDM signal power versus bit error rate in the presence of broadband PLC impulsive noise, multipath issue, and additive white Gaussian noise optical channel is studied. Based on indoor applications, the primary purpose for VFSO link is the general lighting designation with the standard brightness level and the secondary purpose is for data transmission. Therefore, to have a high quality VFSO link besides ensuring sufficient horizontal brightness of the place, high data rate of optical communication links with low bit error rate are also achieved. The radiometric parameters of white LEDs using simulation and experiment are reported. Optimum 15dBm OFDM signal power, (3.2V, 350mA) biasing point, and 1Vp-p dynamic range for white LED has the data rate more than 28Mbits/second with the bit error rates lower than 610? . Moreover, at least 400lx of indoor lighting was also fulfilled. So, the new integrated system is considered as a good alternative for other indoor wireless system counterparts.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Alavi Ghahferokhi, Sayed Ehsan
author_facet	Alavi Ghahferokhi, Sayed Ehsan
author_sort	Alavi Ghahferokhi, Sayed Ehsan
title	Indoor broadcasting using visible free space optic over broadband powerline communication
title_short	Indoor broadcasting using visible free space optic over broadband powerline communication
title_full	Indoor broadcasting using visible free space optic over broadband powerline communication
title_fullStr	Indoor broadcasting using visible free space optic over broadband powerline communication
title_full_unstemmed	Indoor broadcasting using visible free space optic over broadband powerline communication
title_sort	indoor broadcasting using visible free space optic over broadband powerline communication
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2012
url	http://eprints.utm.my/id/eprint/31347/1/SayedEhsanAlaviPFKE2012.pdf
_version_	1747815782044139520

Indoor broadcasting using visible free space optic over broadband powerline communication

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