Relay-assisted OFDM for ultraviolet communications: performance analysis and optimization

Name: Relay-assisted OFDM for ultraviolet communications: performance analysis and optimization
Author: Ardakani, Maryam Haghighi, Uysal, Murat

İsim	Relay-assisted OFDM for ultraviolet communications: performance analysis and optimization
Yazar	Ardakani, Maryam Haghighi, Uysal, Murat
Basım Tarihi:	2017
Basım Yeri	- IEEE
Konu	Optical wireless communication, Ultraviolet communication, OFDM, Cooperative transmission
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	1536-1276
Kayıt Numarası	9118a9e4-ddbb-4be4-9ff1-9c0e378e62c1
Lokasyon	Electrical & Electronics Engineering
Tarih	2017
Örnek Metin	Ultraviolet (UV) communication enables non-line-of-sight (NLOS) outdoor wireless connectivity and is particularly desirable to relax or eliminate pointing and tracking requirements of infrared links. In comparison to infrared counterparts, UV links are subject to relatively higher path loss as well as intersymbol interference resulting from frequency selective nature of the channel. In this paper, we propose the powerful combination of relay-assisted transmission and multi-carrier architecture based on orthogonal frequency division multiplexing (OFDM). Specifically, we consider a cooperative diversity system with orthogonal cooperation protocol and use DC-biased optical OFDM as the underlying physical layer. We consider both amplify-and-forward (AF) and detect-and-forward (DF) relaying. We investigate the error rate performance of the proposed relay-assisted OFDM UV system under consideration and demonstrate performance gains over point-to-point OFDM UV systems. We further determine optimal power allocation schemes to improve the performance. We also propose a variable-rate UV OFDM system and improve system throughput via bit loading.
DOI	10.1109/TWC.2016.2626438
Cilt	16

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Relay-assisted OFDM for ultraviolet communications: performance analysis and optimization

Yazar Ardakani, Maryam Haghighi, Uysal, Murat

Basım Tarihi 2017

Basım Yeri - IEEE

Konu Optical wireless communication, Ultraviolet communication, OFDM, Cooperative transmission

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 1536-1276

Kayıt Numarası 9118a9e4-ddbb-4be4-9ff1-9c0e378e62c1

Lokasyon Electrical & Electronics Engineering

Tarih 2017

Örnek Metin Ultraviolet (UV) communication enables non-line-of-sight (NLOS) outdoor wireless connectivity and is particularly desirable to relax or eliminate pointing and tracking requirements of infrared links. In comparison to infrared counterparts, UV links are subject to relatively higher path loss as well as intersymbol interference resulting from frequency selective nature of the channel. In this paper, we propose the powerful combination of relay-assisted transmission and multi-carrier architecture based on orthogonal frequency division multiplexing (OFDM). Specifically, we consider a cooperative diversity system with orthogonal cooperation protocol and use DC-biased optical OFDM as the underlying physical layer. We consider both amplify-and-forward (AF) and detect-and-forward (DF) relaying. We investigate the error rate performance of the proposed relay-assisted OFDM UV system under consideration and demonstrate performance gains over point-to-point OFDM UV systems. We further determine optimal power allocation schemes to improve the performance. We also propose a variable-rate UV OFDM system and improve system throughput via bit loading.

DOI 10.1109/TWC.2016.2626438

Cilt 16