Relayed FSO communication with aperture averaging receivers and misalignment errors

In this paper, the performance of decode-and-forward relay-assisted free-space-optical (FSO) communication systems under atmospheric turbulence induced fading and misalignment errors is investigated. To mitigate the adverse effects of the atmospheric turbulence, the aperture averaging receivers are considered both at the relay and destination sides. The atmospheric turbulence induced fading is modeled via the exponentiated-Weibull distribution, which has recently been proposed to characterize an FSO link in the presence of finite-sized receiver aperture. The expression for the moment generating function (MGF) of the instantaneous signal-to-noise ratio is derived. Further, new closed form expression for the outage probability is obtained. Moreover, the new expression for the average symbol error rate of the subcarrier intensity modulated M-ary phase shift keying is obtained using the MGF-based approach. Finally, numerical examples are discussed and all the derived analytical results are corroborated by Monte-Carlo simulations. Relayed FSO Communication with Aperture Averaging Receivers and Misalignment Errors. Available from: https://www.researchgate.net/publication/307931308_Relayed_FSO_Communication_with_Aperture_Averaging_Receivers_and_Misalignment_Errors [accessed Nov 10, 2016].

[1]  Manav R. Bhatnagar,et al.  Performance Analysis of Decode-and-Forward Relaying in Gamma-Gamma Fading Channels , 2012, IEEE Photonics Technology Letters.

[2]  Ricardo Barrios,et al.  Exponentiated Weibull distribution family under aperture averaging for Gaussian beam waves. , 2012, Optics express.

[3]  Peng Yue,et al.  Average BER of free-space optical systems in turbulent atmosphere with exponentiated Weibull distribution. , 2012, Optics letters.

[4]  Murat Uysal,et al.  Relay-Assisted Free-Space Optical Communication , 2007, 2007 Conference Record of the Forty-First Asilomar Conference on Signals, Systems and Computers.

[5]  Lu Zhang,et al.  Average BER of subcarrier intensity modulated free space optical systems over the exponentiated Weibull fading channels. , 2014, Optics express.

[6]  L. Andrews,et al.  Aperture averaging effects on the probability density of irradiance fluctuations in moderate-to-strong turbulence. , 2007, Applied optics.

[7]  Fan Yang,et al.  Free-Space Optical Communication with Nonzero Boresight Pointing Errors , 2014, IEEE Transactions on Communications.

[8]  Larry C. Andrews,et al.  Aperture-averaging factor for optical scintillations of plane and spherical waves in the atmosphere , 1992 .

[9]  Julian Cheng,et al.  Space-time coded MPSK coherent MIMO FSO systems in gamma-gamma turbulence , 2013, 2013 IEEE Wireless Communications and Networking Conference (WCNC).

[10]  Theodoros A. Tsiftsis,et al.  Performance of FSO links under exponentiated Weibull turbulence fading with misalignment errors , 2015, 2015 IEEE International Conference on Communications (ICC).

[11]  S. Bourennane,et al.  Fading Reduction by Aperture Averaging and Spatial Diversity in Optical Wireless Systems , 2009, IEEE/OSA Journal of Optical Communications and Networking.

[12]  Joachim Speidel,et al.  Exact symbol error probability of m-psk for multihop transmission with regenerative relays , 2007, IEEE Communications Letters.

[13]  D. Rajan.  Probability, Random Variables, and Stochastic Processes , 2017 .

[14]  Prabhat Kumar Sharma,et al.  Performance analysis of full duplex decode-and-forward cooperative relaying over Nakagami-m fading channels , 2014, Trans. Emerg. Telecommun. Technol..

[15]  Fengsheng Zhao,et al.  Average capacity for optical wireless communication systems over exponentiated Weibull distribution non-Kolmogorov turbulent channels. , 2014, Applied optics.

[16]  S. Hranilovic,et al.  Outage Capacity Optimization for Free-Space Optical Links With Pointing Errors , 2007, Journal of Lightwave Technology.

[17]  Athanasios Papoulis,et al.  Probability, Random Variables and Stochastic Processes , 1965 .

[18]  Dong-xu Yang,et al.  A Bias-Free Quantum Random Number Generation Using Photon Arrival Time Selectively , 2015, IEEE Photonics Journal.

[19]  Federico Dios,et al.  Exponentiated Weibull model for the irradiance probability density function of a laser beam propagating through atmospheric turbulence , 2013 .

[20]  I. S. Gradshteyn,et al.  Table of Integrals, Series, and Products , 1976 .

[21]  Mingwu Yao,et al.  Free-space communications over exponentiated Weibull turbulence channels with nonzero boresight pointing errors. , 2015, Optics express.

[22]  Murat Uysal,et al.  All-Optical Amplify-and-Forward Relaying System for Atmospheric Channels , 2012, IEEE Communications Letters.

[23]  Salah Bourennane,et al.  Channel coding and time-diversity for optical wireless links. , 2009, Optics express.

[24]  Ricardo Barrios,et al.  Probability of fade and BER performance of FSO links over the exponentiated Weibull fading channel under aperture averaging , 2012, Optics/Photonics in Security and Defence.

[25]  Prabhat Kumar Sharma,et al.  Relay Assisted Bi-directional Communication in Generalized Turbulence Fading , 2015, Journal of Lightwave Technology.

[26]  Ping Wang,et al.  Performance Analysis for Relay-Aided Multihop BPPM FSO Communication System Over Exponentiated Weibull Fading Channels With Pointing Error Impairments , 2015, IEEE Photonics Journal.

[27]  Federico Dios,et al.  Exponentiated Weibull Fading Channel Model in Free-Space Optical Communications under Atmospheric Turbulence , 2013 .

[28]  Federico Dios,et al.  Reply to comment on “The exponentiated Weibull distribution family under aperture averaging for Gaussian beam waves” , 2012 .

[29]  Matthew R. McKay,et al.  Error probability and SINR analysis of optimum combining in rician fading , 2009, IEEE Transactions on Communications.

[30]  Prabhat Kumar Sharma,et al.  Bi-Directional Decode-XOR-Forward Relaying Over \(\mathcal {M}\) -Distributed Free Space Optical Links , 2014, IEEE Photonics Technology Letters.