Multi-Hop Relaying over the Atmospheric Poisson Channel: Outage Analysis and Optimization

Safari, Majid; Rad, M.M.; Uysal, Murat

doi:10.1109/tcomm.2012.010512.100630

Cited by 68 publications

(37 citation statements)

References 26 publications

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“…The Log-normal is widely used for weak turbulence, K-distributed for strong turbulence conditions, GG for all turbulence regimes [60], exponentiated Weibull (EW) for the weak-to-moderate turbulence regime, and negative exponential for the saturated regimes. To mitigate the degrading effect of the turbulence-induced fading, a number of schemes have been proposed including the diversity and aperture averaging [60,61], error-correcting codes [62] and multi-hope relay based transmission [63]. Of the three types of diversity, wavelength diversity requires composite transmitter and with wide spacing between the carrier signals which results in complex optical system design [64]; time diversity involving coding and interleaving results in long delay latencies, thus the need for large size memories [65]; the spatial diversity requiring multiple transmitters and receivers [66]; and different multi-branch diversity receivers with arbitrarily correlated Rician channels [67].…”

Section: Free Space Optics (Fso)mentioning

confidence: 99%

Emerging Optical Wireless Communications-Advances and Challenges

Ghassemlooy

Arnon

Uysal

et al. 2015

IEEE J. Select. Areas Commun.

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389

175

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Section: Free Space Optics (Fso)mentioning

confidence: 99%

Emerging Optical Wireless Communications-Advances and Challenges

Ghassemlooy

Arnon

Uysal

et al. 2015

IEEE J. Select. Areas Commun.

Self Cite

389

175

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“…In reality, multi-hop transmission has been introduced as a promising technique to improve FSO links coverage and reliability [3] , [7] , [5] , [6] and [4] , but also to treat parallel and serial cooperative communication using OOK modulation in strong turbulence channel [19] or BPSK technique focusing either in log-normal or gamma gamma channel [20] . By subsequently deploying of smaller multiple hops (i.e., is the distance between two relays), more reliable FSO transmission over longer distances can be achieved.…”

Section: A Related Workmentioning

confidence: 99%

Performance analysis of PPM modulation in multihop FSO system over gamma gamma channel

Saidi

Tourki

Hamdi

2016

2016 International Symposium on Signal, Image, Video and Communications (ISIVC)

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Atmospheric turbulence induced fading is one of the main impairments affecting the operation of free-space optical (FSO) communication systems. In this work, the average symbol error rate (SER) of M-ary pulse position modulation (PPM) is analyzed under Gamma-Gamma fading channel. Using the characteristics of Meijer G function, Closed-form expression for average SER is derived. In this paper, we analyze the performance of detect and forward relay or/and amplify and forward three-hop FSO systems over strong atmospheric turbulence channels. In our analysis, turbulence channels are modeled by Gamma-Gamma distribution and the AF transmission is based on optical amplify-and forward (OAF) technique. The DF relay refers to detect and forward protocol. We look for symbol-error probability (SEP) of dual-hop PPM modulated FSO systems taking into account the effects of various noises as well as path loss and geometric spreading of optical beam. The numerical results show that strong turbulence has a severe effect on the performance of FSO systems. we employ PPM modulation to improve the system's performance.

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“…In other words, in 'Geiger' mode, a SPAD generates a very large current by receiving a single photon and thus can essentially be modelled as a single photon counter. The photodetection process of an ideal photon counter can be modelled using Poisson statistics which describe the shot noise effect ( [10] and references therein).…”

Section: B Spad Receivermentioning

confidence: 99%

Nonlinear Distortion in SPAD-Based Optical OFDM Systems

Safari²,

Henderson

et al. 2015

2015 IEEE Globecom Workshops (GC Wkshps)

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In this paper, an optical orthogonal frequency division multiplexing (OFDM) system based on a single-photon avalanche diode (SPAD) receiver with a nonlinear distortion is presented. In this study, the methods to calculate the output of passive and active quenching SPAD arrays are given. Nonlinear performances of these two SPAD arrays and their effects on bit-error ratio performances of SPAD-based DC-biased optical OFDM and asymmetrically clipped optical OFDM are simulated in the absence of background light. In the simulation, the maximum optical irradiance and the low error area are given as the metrics of the nonlinear distortion. The effects of the nonlinear distortion are discussed for different modulation schemes, symbol rates and spectral efficiencies.Index Terms-optical wireless communication (OWC), singlephoton avalanche diode (SPAD), nonlinear distortion, optical OFDM.

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Multi-Hop Relaying over the Atmospheric Poisson Channel: Outage Analysis and Optimization

Cited by 68 publications

References 26 publications

Emerging Optical Wireless Communications-Advances and Challenges

Emerging Optical Wireless Communications-Advances and Challenges

Performance analysis of PPM modulation in multihop FSO system over gamma gamma channel

Nonlinear Distortion in SPAD-Based Optical OFDM Systems

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