Unified performance analysis of multi-hop FSO systems over double generalized gamma turbulence channels with pointing errors

Name: Unified performance analysis of multi-hop FSO systems over double generalized gamma turbulence channels with pointing errors
Author: Ashrafzadeh, B., Zaimbashi, A., Soleimani-Nasab, E., Uysal, Murat

İsim	Unified performance analysis of multi-hop FSO systems over double generalized gamma turbulence channels with pointing errors
Yazar	Ashrafzadeh, B., Zaimbashi, A., Soleimani-Nasab, E., Uysal, Murat
Basım Tarihi:	2020-11
Basım Yeri	- IEEE
Konu	Fading channels, Signal to noise ratio, Power system reliability, Probability, Bit error rate, Relays, Wireless communication
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	1536-1276
Kayıt Numarası	5248ea53-fda3-45c1-8a96-255f3dc57223
Lokasyon	Electrical & Electronics Engineering
Tarih	2020-11
Notlar	Iran National Science Foundation (INSF)
Örnek Metin	Free space optical (FSO) communication systems provide high bandwidth in unregulated spectrum and act as a powerful line-of-sight wireless connectivity solution. The performance of FSO systems can be seriously impaired by fading as a result of atmospheric turbulence and/or pointing errors due to misalignment. In the context of FSO systems, relaying was proposed as an effective fading mitigation technique due to the fact that the variance is distance-dependent in turbulence channels. In this article, we present a unified performance analysis of multi-hop FSO systems over Double Generalized Gamma (DGG) turbulence channels with pointing error impairments. We assume amplify-and-forward relaying and consider both heterodyne detection and intensity modulation with direct detection. We derive tight closed-form expressions for the outage probability and bit error probability of both fixed-gain and channel state information (CSI)-assisted relaying in terms of the bivariate Fox-H functions and Fox-H functions, respectively. We further analyze asymptotic behavior of the outage probability in terms of simple elementary functions and obtain the achievable diversity orders. Diversity gain is found to be a function of atmospheric turbulence parameters, pointing error, detection type and the number of hops. Monte Carlo simulation results are further provided to verify the accuracy of the derived expressions.
DOI	10.1109/TWC.2020.3015780
Cilt	19

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Unified performance analysis of multi-hop FSO systems over double generalized gamma turbulence channels with pointing errors

Yazar Ashrafzadeh, B., Zaimbashi, A., Soleimani-Nasab, E., Uysal, Murat

Basım Tarihi 2020-11

Basım Yeri - IEEE

Konu Fading channels, Signal to noise ratio, Power system reliability, Probability, Bit error rate, Relays, Wireless communication

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 1536-1276

Kayıt Numarası 5248ea53-fda3-45c1-8a96-255f3dc57223

Lokasyon Electrical & Electronics Engineering

Tarih 2020-11

Notlar Iran National Science Foundation (INSF)

Örnek Metin Free space optical (FSO) communication systems provide high bandwidth in unregulated spectrum and act as a powerful line-of-sight wireless connectivity solution. The performance of FSO systems can be seriously impaired by fading as a result of atmospheric turbulence and/or pointing errors due to misalignment. In the context of FSO systems, relaying was proposed as an effective fading mitigation technique due to the fact that the variance is distance-dependent in turbulence channels. In this article, we present a unified performance analysis of multi-hop FSO systems over Double Generalized Gamma (DGG) turbulence channels with pointing error impairments. We assume amplify-and-forward relaying and consider both heterodyne detection and intensity modulation with direct detection. We derive tight closed-form expressions for the outage probability and bit error probability of both fixed-gain and channel state information (CSI)-assisted relaying in terms of the bivariate Fox-H functions and Fox-H functions, respectively. We further analyze asymptotic behavior of the outage probability in terms of simple elementary functions and obtain the achievable diversity orders. Diversity gain is found to be a function of atmospheric turbulence parameters, pointing error, detection type and the number of hops. Monte Carlo simulation results are further provided to verify the accuracy of the derived expressions.

DOI 10.1109/TWC.2020.3015780

Cilt 19