Relay-assisted OFDM-based visible light communications

Name: Relay-assisted OFDM-based visible light communications
Author: Kızılırmak, R. Ç., Narmanlıoğlu, Ömer, Uysal, Murat

İsim	Relay-assisted OFDM-based visible light communications
Yazar	Kızılırmak, R. Ç., Narmanlıoğlu, Ömer, Uysal, Murat
Basım Tarihi:	2015-10
Basım Yeri	- IEEE
Konu	Visible light communication, Cooperative communication, OFDM
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0090-6778
Kayıt Numarası	858d7c5f-eff6-4839-8031-cdb551271027
Lokasyon	Electrical & Electronics Engineering
Tarih	2015-10
Notlar	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Örnek Metin	In this study, we investigate a relay-assisted visible light communication (VLC) system where an intermediate light source cooperates with the main light source. Specifically, we consider two light sources in an office space: one is the information source employed on the ceiling and the other one is a task light. Our system uses dc biased optical orthogonal frequency division multiplexing (DCO-OFDM) where the task light performs relaying to assist the communication and operates in half-duplex mode for both amplify-and-forward and decode-and-forward relaying. We investigate the bit error rate (BER) performance of the relay-assisted VLC system and optimize the performance through optimal ac/dc power allocation under illumination constraints. The dc power allocation is determined by sharing the number of LED chips between the terminals to satisfy a desired luminance ratio. The ac power allocation decides the fraction of the information signal power to be consumed at the terminals in order to minimize the BER. Numerical results reveal that cooperation brings significant performance gains over direct transmission. We further provide comparisons of two relaying techniques under consideration and discuss the effect of clipping noise on the error rate performance.
DOI	10.1109/TCOMM.2015.2464815
Cilt	63

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Relay-assisted OFDM-based visible light communications

Yazar Kızılırmak, R. Ç., Narmanlıoğlu, Ömer, Uysal, Murat

Basım Tarihi 2015-10

Basım Yeri - IEEE

Konu Visible light communication, Cooperative communication, OFDM

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0090-6778

Kayıt Numarası 858d7c5f-eff6-4839-8031-cdb551271027

Lokasyon Electrical & Electronics Engineering

Tarih 2015-10

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

Örnek Metin In this study, we investigate a relay-assisted visible light communication (VLC) system where an intermediate light source cooperates with the main light source. Specifically, we consider two light sources in an office space: one is the information source employed on the ceiling and the other one is a task light. Our system uses dc biased optical orthogonal frequency division multiplexing (DCO-OFDM) where the task light performs relaying to assist the communication and operates in half-duplex mode for both amplify-and-forward and decode-and-forward relaying. We investigate the bit error rate (BER) performance of the relay-assisted VLC system and optimize the performance through optimal ac/dc power allocation under illumination constraints. The dc power allocation is determined by sharing the number of LED chips between the terminals to satisfy a desired luminance ratio. The ac power allocation decides the fraction of the information signal power to be consumed at the terminals in order to minimize the BER. Numerical results reveal that cooperation brings significant performance gains over direct transmission. We further provide comparisons of two relaying techniques under consideration and discuss the effect of clipping noise on the error rate performance.

DOI 10.1109/TCOMM.2015.2464815

Cilt 63