Performance analysis and optimization of unipolar OFDM based relay-assisted visible light communications☆☆

Name: Performance analysis and optimization of unipolar OFDM based relay-assisted visible light communications☆☆
Author: Narmanlıoğlu, Ömer, Djengomemgoto, G., Uysal, Murat

İsim	Performance analysis and optimization of unipolar OFDM based relay-assisted visible light communications☆☆
Yazar	Narmanlıoğlu, Ömer, Djengomemgoto, G., Uysal, Murat
Basım Tarihi:	2017
Basım Yeri	- Elsevier
Konu	OFDM, Relay-assisted transmission, Cooperative communications, Visible light communication
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0030-4026
Kayıt Numarası	d8a95354-26c3-4e9d-8015-56ba0f4c2296
Lokasyon	Electrical & Electronics Engineering
Tarih	2017
Notlar	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Örnek Metin	In this paper, we consider a relay-assisted visible light communication (VLC) system where an intermediate light source cooperates with the main light source. Following the IEEE 802.15.7r1 VLC reference channel model, we assume the presence of two different light sources in an office space. The first one is the ceiling light that serves as the source terminal while the second one is the desk lamp that serves as the relay terminal. Our system builds upon unipolar optical orthogonal frequency division multiplexing (U-OFDM) where the desk light performs amplify-and-forward relaying to assist the ceiling light and operates in a half-duplex mode. In addition, we consider the use of enhanced U-OFDM (eU-OFDM) which doubles the spectral efficiency of U-OFDM at the expense of additional computational complexity. We analyze the bit error rate performance of the relay-assisted VLC system building on these two OFDM types and quantify performance improvements over point-to-point (i.e., no relaying) VLC systems. In an effort to further improve system performance, we investigate optimal power allocation between source and relay terminals.
DOI	10.1016/j.ijleo.2017.08.005
Cilt	151

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Performance analysis and optimization of unipolar OFDM based relay-assisted visible light communications☆☆

Yazar Narmanlıoğlu, Ömer, Djengomemgoto, G., Uysal, Murat

Basım Tarihi 2017

Basım Yeri - Elsevier

Konu OFDM, Relay-assisted transmission, Cooperative communications, Visible light communication

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0030-4026

Kayıt Numarası d8a95354-26c3-4e9d-8015-56ba0f4c2296

Lokasyon Electrical & Electronics Engineering

Tarih 2017

Notlar Due to copyright restrictions, the access to the full text of this article is only available via subscription.

Örnek Metin In this paper, we consider a relay-assisted visible light communication (VLC) system where an intermediate light source cooperates with the main light source. Following the IEEE 802.15.7r1 VLC reference channel model, we assume the presence of two different light sources in an office space. The first one is the ceiling light that serves as the source terminal while the second one is the desk lamp that serves as the relay terminal. Our system builds upon unipolar optical orthogonal frequency division multiplexing (U-OFDM) where the desk light performs amplify-and-forward relaying to assist the ceiling light and operates in a half-duplex mode. In addition, we consider the use of enhanced U-OFDM (eU-OFDM) which doubles the spectral efficiency of U-OFDM at the expense of additional computational complexity. We analyze the bit error rate performance of the relay-assisted VLC system building on these two OFDM types and quantify performance improvements over point-to-point (i.e., no relaying) VLC systems. In an effort to further improve system performance, we investigate optimal power allocation between source and relay terminals.

DOI 10.1016/j.ijleo.2017.08.005

Cilt 151