Optical space communications

Chan, Vincent W. S.

doi:10.1109/2944.902144

Cited by 121 publications

(40 citation statements)

References 13 publications

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“…Direct detection devices can operate at tens of photons per bit, while coherent detectors can offer performance that is limited by source quantum noise (BLIP limit) [24]. However, this does not, in itself, imply a dramatic improvement over the THz receivers we modeled.…”

Section: Comparison-to-optical Linksmentioning

confidence: 97%

Modeling of Terabit Geostationary Terahertz Satellite Links From Globally Dry Locations

Suen

Fang

Denny

et al. 2015

IEEE Trans. THz Sci. Technol.

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Abstract-While terahertz (THz) communication systems, operating from 100 GHz to 1 THz, have the potential to exploit wide swaths of unused spectrum for ultra-high bitrate communication, there are significant challenges. Particularly, the strong absorption of water vapor can result in very high atmospheric attenuation. We modeled a ground to geostationary satellite link and found that using large aperture THz stations, patterned after the 12.5 m Atacama Large Microwave Array dish and the 3.5 m Herschel Space Observatory optics, worst 10th percentile data rates in excess of one terabit per second in the THz bands are possible. The key is to site ground stations in dry regions. We locate these by coupling our link model, which selects optimum modulation and carrier bandwidth, with global, high-resolution satellite water vapor measurements. We present detailed maps showing modeled link performance over the surface of the Earth. Smaller apertures on aircraft and balloons are also able to exceed 1 terabit/second due to their location above nearly all water vapor. Compared to free-space optical links, evidence suggests THz systems are superior where fog, cloud cover and clear-air turbulence are of concern.

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Section: Comparison-to-optical Linksmentioning

confidence: 97%

Modeling of Terabit Geostationary Terahertz Satellite Links From Globally Dry Locations

Suen

Fang

Denny

et al. 2015

IEEE Trans. THz Sci. Technol.

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“…[1][2][3] To establish an optical link between any two satellites requires the line of sight (LOS) aligned for the duration of communication. 4) The assignment to point a narrow beam-width laser from one satellite to another over a distance of tens of thousands of kilometers becomes even more complex especially in the presence of relative motion and satellite vibration.…”

Section: Introductionmentioning

confidence: 99%

Influence of satellite vibration on optical communication performance for intersatellite laser links

et al. 2012

OPT REV

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“…With increasing demands for real-time communication throughout the world, intersatellite optical networking communications have attracted considerable attention for potential high-speed data rate and global coverage access [1][2][3][4][5][6]. The channel capacity, according to the Shannon theorem, is the maximum achievable code rate allowing reliable communication between transmitter and receiver [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Analysis of capacity and outage probability for intersatellite optical communications in the presence of random pointing jitter

et al. 2012

J Russ Laser Res

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This work is motivated by the need to achieve the Shannon channel capacity for intersatellite optical communication with intensity modulation and direct detection. In this paper, we investigate the tradeoff between the channel capacity and the outage probability in the presence of random pointing jitter for intersatellite optical links. First, we derive an analytical expression of the outage probability in the absence of bias error, and then the bias error is taken into account. By minimizing the outage probability, we obtain analytically the optimum design of the beam half-width divergence angle w opt 0 for a given channel code rate. Furthermore, we discuss the tradeoff between the outage probability and the channel capacity and illustrate the results by adopting w opt 0 in the presence of random pointing jitter. The results obtained are useful for the parametric-estimation optimization of intersatellite optical communication systems.

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Optical space communications

Cited by 121 publications

References 13 publications

Modeling of Terabit Geostationary Terahertz Satellite Links From Globally Dry Locations

Modeling of Terabit Geostationary Terahertz Satellite Links From Globally Dry Locations

Influence of satellite vibration on optical communication performance for intersatellite laser links

Analysis of capacity and outage probability for intersatellite optical communications in the presence of random pointing jitter

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