Capacity Analysis of Dual Amplify-and-Forward Relayed Free-Space Optical Communication Systems Over Turbulence Channels With Pointing Errors

Peppas, Kostas P.; Stassinakis, Argyris N.; Nistazakis, Hector E.; Tombras, George S.

doi:10.1364/jocn.5.001032

Cited by 99 publications

(92 citation statements)

References 40 publications

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“…(5), a unity mean received irradiance is considered, as this form of modeling is easily mathematically tractable. Hence, this PDF has been used in many works to describe turbulence-induced fading [11,12]. In saturated atmospheric condition, the scintillation index σ I i =…”

Section: Optical Channel Modelmentioning

confidence: 99%

“…Hence, opticalelectrical-optical (OEO) conversion takes place at each relaying terminal. The atmospheric channel model used in this study is an aggregate optical channel model which comprises of atmospheric attenuation, turbulence and pointing errors fading models [6][7][8][9][10][11][12][13]. The negative exponential (NE) channel model can be used to characterize the turbulenceinduced fading in saturated atmospheric regime.…”

Section: Introductionmentioning

confidence: 99%

“…In [6][7][8][9][10][11], various performance metrics such as outage probability, average bit error rate (ABER) and average capacity of multi-hop FSO have been studied. However, not much work has been done on beam-optimized multi-hop FSO with DF relaying in the limit of strong turbulence, i.e., with the NE channel model.…”

Section: Introductionmentioning

confidence: 99%

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Performance enhancement of free space optical communication system using beam-optimized serial relaying in saturated atmosphere with pointing errors

2016

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In this paper, the performance improvement of a free space optical communication system with multi-hop and beam optimization has been studied. Novel closed-form expressions for the end-to-end average bit error rate, outage probability and average capacity of multi-hop free space communication system with decode-and-forward relaying are derived. Beam optimization is done using NelderMead simplex algorithm. A composite channel model using atmospheric attenuation, turbulence and pointing errors is used to model the atmospheric impairments. The saturated atmospheric conditions are modeled by negative exponential channel model, and pointing error effects are considered by normalized jitter standard deviation parameter. The performance of the free space optical communication system in terms of end-to-end average bit error rate, outage probability and average channel capacity in saturated atmospheric turbulence conditions and pointing errors is significantly enhanced by using beam-optimized serial relaying with decode-andforward transmission. The simulation results obtained by Monte Carlo simulation are in agreement with the results obtained from the closed-form expressions.

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Section: Optical Channel Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance enhancement of free space optical communication system using beam-optimized serial relaying in saturated atmosphere with pointing errors

2016

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“…[7] presents the performance analysis of a dual-hop mixed RF/FSO transmission system with pointing errors taken into account. In [8], the end-to-end capacity of dual-hop FSO communication systems employing amplify-and-forward (AF) relaying is studied. Selection combining (SC) and maximum ratio combining (MRC) diversity techniques for a dual-branch transmission system composed of a direct RF link and a dual-hop fixed gain relay RF/FSO system are investigated in [9].…”

Section: Introductionmentioning

confidence: 99%

Multihop Relaying Over IM/DD FSO Systems With Pointing Errors

Zedini

Alouini

2015

J. Lightwave Technol.

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“…Another issue of concern with OWC systems is pointing errors. The sway of high-rise buildings due to dynamic wind loads, thermal expansions and weak earthquakes causes misalignment between source and destination transceivers, known as pointing errors and has been addressed in [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Analysis of subcarrier intensity modulation‐based optical wireless DF relaying over turbulence channels with path loss and pointing error impairments

2014

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The authors consider a subcarrier intensity-modulated relayed optical wireless communication system under the combined influence of path loss, atmospheric turbulence and pointing error impairments. The turbulence-induced fading is modelled by independent but not necessarily identically distributed (i.n.i.d.) Gamma-Gamma fading statistics where the relaying protocol followed by the system is decode and forward (DF). First, the statistics of instantaneous signal-to-noise ratio at the destination is derived, followed by the novel and exact closed-form expression for outage probability of the system. Then using the moment generating function-based approach, the authors evaluate error performance of the system in terms of average symbol error rate (SER) for M-ary phase shift keying modulation schemes. Further, as a special case for M = 2, that is, binary phase shift keying modulation scheme, the exact closed-form expression of average SER is derived in terms of mathematically tractable Meijer's G-function and extended generalised bivariate Meijer's G-function. Finally, at the end of the paper, various numerical examples are included to demonstrate the effect of different system parameters on the performance of the system and are verified by Monte-Carlo simulations.

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Capacity Analysis of Dual Amplify-and-Forward Relayed Free-Space Optical Communication Systems Over Turbulence Channels With Pointing Errors

Cited by 99 publications

References 40 publications

Performance enhancement of free space optical communication system using beam-optimized serial relaying in saturated atmosphere with pointing errors

Performance enhancement of free space optical communication system using beam-optimized serial relaying in saturated atmosphere with pointing errors

Multihop Relaying Over IM/DD FSO Systems With Pointing Errors

Analysis of subcarrier intensity modulation‐based optical wireless DF relaying over turbulence channels with path loss and pointing error impairments

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