Multi-beam space-time coded systems for optical atmospheric channels

Jaime A. Anguita; Mark A. Neifeld; Bane V. Vasic

doi:10.1117/12.681488

Multi-beam space-time coded systems for optical atmospheric channels

Jaime A. Anguita, Mark A. Neifeld, Bane V. Vasic

Research output: Contribution to conference › Paper

10 Scopus citations

Abstract

We consider a terrestrial free-space optical communication link affected by atmospheric turbulence. By means of numerical simulations we estimate the reduction in scintillation achieved by the combined effect of aperture averaging and four transmitters when mutually-incoherent sources and a realistic detector size are used. We evaluate two space-time coding schemes: the first scheme uses a repetition code operating on four transmitters, and the second scheme uses a size-four rate-one space-time block code, originally proposed for wireless radio-frequency links. Both schemes deliver large signal-to-noise ratio gains compare to a single-beam system. The first scheme gives the best performance in all cases because of the natural incoherence found among optical sources.

Original language	American English
DOIs	https://doi.org/10.1117/12.681488
State	Published - 13 Nov 2006
Externally published	Yes
Event	Proceedings of SPIE - The International Society for Optical Engineering - Duration: 1 Jan 2019 → …

Conference

Conference	Proceedings of SPIE - The International Society for Optical Engineering
Period	1/01/19 → …

Keywords

Atmospheric turbulence
Free-space optical communication
Laser communication
Multiple-input multiple-output
Multiple-input single-output
Space-time codes

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10.1117/12.681488

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title = "Multi-beam space-time coded systems for optical atmospheric channels",

abstract = "We consider a terrestrial free-space optical communication link affected by atmospheric turbulence. By means of numerical simulations we estimate the reduction in scintillation achieved by the combined effect of aperture averaging and four transmitters when mutually-incoherent sources and a realistic detector size are used. We evaluate two space-time coding schemes: the first scheme uses a repetition code operating on four transmitters, and the second scheme uses a size-four rate-one space-time block code, originally proposed for wireless radio-frequency links. Both schemes deliver large signal-to-noise ratio gains compare to a single-beam system. The first scheme gives the best performance in all cases because of the natural incoherence found among optical sources.",

keywords = "Atmospheric turbulence, Free-space optical communication, Laser communication, Multiple-input multiple-output, Multiple-input single-output, Space-time codes, Atmospheric turbulence, Free-space optical communication, Laser communication, Multiple-input multiple-output, Multiple-input single-output, Space-time codes",

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language = "American English",

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AU - Anguita, Jaime A.

AU - Neifeld, Mark A.

AU - Vasic, Bane V.

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N2 - We consider a terrestrial free-space optical communication link affected by atmospheric turbulence. By means of numerical simulations we estimate the reduction in scintillation achieved by the combined effect of aperture averaging and four transmitters when mutually-incoherent sources and a realistic detector size are used. We evaluate two space-time coding schemes: the first scheme uses a repetition code operating on four transmitters, and the second scheme uses a size-four rate-one space-time block code, originally proposed for wireless radio-frequency links. Both schemes deliver large signal-to-noise ratio gains compare to a single-beam system. The first scheme gives the best performance in all cases because of the natural incoherence found among optical sources.

AB - We consider a terrestrial free-space optical communication link affected by atmospheric turbulence. By means of numerical simulations we estimate the reduction in scintillation achieved by the combined effect of aperture averaging and four transmitters when mutually-incoherent sources and a realistic detector size are used. We evaluate two space-time coding schemes: the first scheme uses a repetition code operating on four transmitters, and the second scheme uses a size-four rate-one space-time block code, originally proposed for wireless radio-frequency links. Both schemes deliver large signal-to-noise ratio gains compare to a single-beam system. The first scheme gives the best performance in all cases because of the natural incoherence found among optical sources.

KW - Atmospheric turbulence

KW - Free-space optical communication

KW - Laser communication

KW - Multiple-input multiple-output

KW - Multiple-input single-output

KW - Space-time codes

KW - Atmospheric turbulence

KW - Free-space optical communication

KW - Laser communication

KW - Multiple-input multiple-output

KW - Multiple-input single-output

KW - Space-time codes

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