Finite-SNR diversity gain analysis of FSO systems over gamma-gamma fading channels with pointing errors

Name: Finite-SNR diversity gain analysis of FSO systems over gamma-gamma fading channels with pointing errors
Author: Elamassie, Mohammed, Sait, S. M., Uysal, Murat

İsim	Finite-SNR diversity gain analysis of FSO systems over gamma-gamma fading channels with pointing errors
Yazar	Elamassie, Mohammed, Sait, S. M., Uysal, Murat
Basım Tarihi:	2021-06
Basım Yeri	- IEEE
Konu	Diversity order, Finite-SNR, Free-space optical communication, Gamma-gamma fading
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	1089-7798
Kayıt Numarası	2e105940-3002-48ca-beaf-f5305d136475
Lokasyon	Electrical & Electronics Engineering
Tarih	2021-06
Notlar	TÜBİTAK ; Deanship of Scientific Research, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia
Örnek Metin	Free space optical (FSO) communication systems are subject to turbulence-induced fading as a result of fluctuations in the refractive index. Gamma-Gamma (GG) distribution is commonly used in the literature to characterize moderate-to-strong turbulence conditions. The performance of FSO systems is further degraded by pointing error-induced fading as a result of building sways. While the asymptotic analysis presented in earlier works is important to understand the maximum diversity gains of FSO systems attainable over fading channels, such gains might not be available in practical range of signal-to-noise ratio (SNR). Furthermore, different systems with the same asymptotic slope may have different slopes in the range of finite SNR values. In this paper, we consider a multiple-input multiple-output (MIMO) FSO system with intensity modulation and direct detection (IM/DD). We derive approximate expression for the finite-SNR diversity order over GG turbulence channels in the presence of pointing errors. We also investigate convergence speed to full diversity. We provide numerical results to demonstrate the accuracy of our derivations and corroborate on our analytical findings.
DOI	10.1109/LCOMM.2021.3061775
Cilt	25

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Finite-SNR diversity gain analysis of FSO systems over gamma-gamma fading channels with pointing errors

Yazar Elamassie, Mohammed, Sait, S. M., Uysal, Murat

Basım Tarihi 2021-06

Basım Yeri - IEEE

Konu Diversity order, Finite-SNR, Free-space optical communication, Gamma-gamma fading

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 1089-7798

Kayıt Numarası 2e105940-3002-48ca-beaf-f5305d136475

Lokasyon Electrical & Electronics Engineering

Tarih 2021-06

Notlar TÜBİTAK ; Deanship of Scientific Research, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia

Örnek Metin Free space optical (FSO) communication systems are subject to turbulence-induced fading as a result of fluctuations in the refractive index. Gamma-Gamma (GG) distribution is commonly used in the literature to characterize moderate-to-strong turbulence conditions. The performance of FSO systems is further degraded by pointing error-induced fading as a result of building sways. While the asymptotic analysis presented in earlier works is important to understand the maximum diversity gains of FSO systems attainable over fading channels, such gains might not be available in practical range of signal-to-noise ratio (SNR). Furthermore, different systems with the same asymptotic slope may have different slopes in the range of finite SNR values. In this paper, we consider a multiple-input multiple-output (MIMO) FSO system with intensity modulation and direct detection (IM/DD). We derive approximate expression for the finite-SNR diversity order over GG turbulence channels in the presence of pointing errors. We also investigate convergence speed to full diversity. We provide numerical results to demonstrate the accuracy of our derivations and corroborate on our analytical findings.

DOI 10.1109/LCOMM.2021.3061775

Cilt 25