Optical Communications for High-Altitude Platforms

Fidler, Franz; Knapek, Markus; Horwath, Joachim; Leeb, Walter R.

doi:10.1109/jstqe.2010.2047382

Cited by 153 publications

(92 citation statements)

References 37 publications

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“…Note that, although largely motivated by the use of FSO in the scenario of satellite quantum communications to and from terrestrial ground stations [2][3][4][5][6][7][8][9][10][11][12], our results are applicable to a range of FSO links such as high-altitude platform (HAP) to satellite quantum links [21] and aircraft-to-ground quantum links [22], The range of atmospheric channels we study will cover all of these different quantum communication scenarios.…”

Section: Introductionmentioning

confidence: 99%

Gaussian entanglement distribution via satellite

Hosseinidehaj

Malaney

2015

Phys. Rev. A

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In this work we analyze three quantum communication schemes for the generation of Gaussian entanglement between two ground stations. Communication occurs via a satellite over two independent atmospheric fading channels dominated by turbulence-induced beam wander. In our first scheme, the engineering complexity remains largely on the ground transceivers, with the satellite acting simply as a reflector. Although the channel state information of the two atmospheric channels remains unknown in this scheme, the Gaussian entanglement generation between the ground stations can still be determined. On the ground, distillation and Gaussification procedures can be applied, leading to a refined Gaussian entanglement generation rate between the ground stations. We compare the rates produced by this first scheme with two competing schemes in which quantum complexity is added to the satellite, thereby illustrating the tradeoff between space-based engineering complexity and the rate of ground-station entanglement generation.

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Section: Introductionmentioning

confidence: 99%

Gaussian entanglement distribution via satellite

Hosseinidehaj

Malaney

2015

Phys. Rev. A

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“…5, we plot the performance for block fading channels. The system parameters are: A = 4 m, transmit power of 1 mW, and W 0 = 0.048 m. A rate 1/2 convolutional code with encoder polynomials [5,7] is used. We use terms upto a maximum distance of 20 in the analysis.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…However, such links require line-of-sight for effective operations, and pointing errors can significantly degrade their performance [1] - [4]. There have been significant studies on characterization of pointing errors for satellite and high-altitude platforms (HAPs), and acquisition and tracking techniques [5], [6]. Although effective tracking can reduce the pointing error effects, there will still be errors due to random vibrations and rotations in space platforms and non-perfect tracking.…”

Section: Introductionmentioning

confidence: 99%

Optimized laser beam parameters for communications in space environments in the presence of pointing errors

Tatineni

Perez-Ramirez

Borah

et al. 2012

2012 IEEE International Conference on Communications (ICC)

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We investigate the behavior of spatially partially coherent beams (PCBs) in the presence of pointing errors in the space communication environment. Closed form expressions for the optimal coherence length for minimizing outage probability and maximizing average signal-to-noise ratio (SNR) are derived. In the case of outage probablity, we observe that the optimal coherence parameter does not depend on the pointing error statistics. For average SNR results, PCBs can improve performance when large fixed beam offsets are present. We also provide BER performance analysis results for a convolutionally coded system and demonstrate significant performance improvement using PCBs with optimized parameters.

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“…Optical amplification is an appealing candidate [200][201][202][203], especially in earthto-satellite uplinks where low power consumption limitations do not apply. Another possible candidate in earth-to-satellite communications is the use of flying vehicles and high-altitude-platforms as beam relays [204][205][206]. When no amplification or intermediate relays are available, as in deep space communications [207], the losses may not be mitigated and more sophisticated receivers that operate at very low powers (photoncounting) are required [208].…”

Section: Satellite Links and High-altitude Platformsmentioning

confidence: 99%

A review of communication-oriented optical wireless systems

Borah

Boucouvalas

Davis

et al. 2012

J Wireless Com Network

188

104

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This article presents an overview of optical wireless (OW) communication systems that operate both in the short-(personal and indoor systems) and the long-range (outdoor and hybrid) regimes. Each of these areas is discussed in terms of (a) key requirements, (b) their application framework, (c) major impairments and applicable mitigation techniques, and (d) current and/or future trends. Personal communication systems are discussed within the context of point-to-point ultra-high speed data transfer. The most relevant application framework and related standards are presented, including the next generation Giga-IR standard that extends personal communication speeds to over 1 Gb/s. As far as indoor systems are concerned, emphasis is given on modeling the dispersive nature of indoor OW channels, on the limitations that dispersion imposes on user mobility and dispersion mitigation techniques. Visible light communication systems, which provide both illumination and communication over visible or hybrid visible/ infrared LEDs, are presented as the most important representative of future indoor OW systems. The discussion on outdoor systems focuses on the impact of atmospheric effects on the optical channel and associated mitigation techniques that extend the realizable link lengths and transfer rates. Currently, outdoor OW is commercially available at 10 Gb/s Ethernet speeds for Metro networks and Local-Area-Network interconnections and speeds are expected to increase as faster and more reliable optical components become available. This article concludes with hybrid optical wireless/radio-frequency (OW/RF) systems that employ an additional RF link to improve the overall system reliability. Emphasis is given on cooperation techniques between the reliable RF subsystem and the broadband OW system.

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Optical Communications for High-Altitude Platforms

Cited by 153 publications

References 37 publications

Gaussian entanglement distribution via satellite

Gaussian entanglement distribution via satellite

Optimized laser beam parameters for communications in space environments in the presence of pointing errors

A review of communication-oriented optical wireless systems

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