Communication theory for the turbulent atmosphere

Hoversten, E. V.; Harger, Robert O.; Halme, Seppo J.

doi:10.1109/proc.1970.7986

Cited by 53 publications

(15 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, in an "off" interval, the count variable is Poisson with parameter . 2 The signal mean parameter is given by (5) where is the detector's quantum efficiency, assumed to be 0.5 here, is Planck's constant 10 , and is the optical center frequency, here taken to be 10 , corresponding to a 1.55 m wavelength in the infrared region. is the power provided at one detector by the entire transmitter array, and is the duration of a slot.…”

Section: Optical Detectionmentioning

confidence: 99%

See 1 more Smart Citation

Optical repetition MIMO transmission with multipulse PPM

Wilson

Brandt-Pearce

Cao

et al. 2005

IEEE J. Select. Areas Commun.

208

View full text Add to dashboard Cite

Abstract-We study the use of multiple laser transmitters combined with multiple photodetectors for atmospheric, line-of-sight optical communication, and focus upon the use of multiple-pulseposition-modulation as a power-efficient transmission format, with signal repetition across the laser array. Ideal (photon counting) photodetectors are assumed, with and without background radiation. The resulting multiple-input/multiple-output channel has the potential for combating fading effects on turbulent optical channels, for which both log-normal and Rayleigh-fading models are treated. Our focus is upon symbol error probability for uncoded transmission, and on capacity for coded transmission. Full spatial diversity is obtained naturally in this application.Index Terms-Multiple-input/multiple-output (MIMO) systems, optical communications, pulse-position-modulation (PPM).

show abstract

Section: Optical Detectionmentioning

confidence: 99%

“…Research in optical free-space communication dates to the 1960s, [5], [7], [8], where it was shown that standard pulse-position-modulation (PPM) is an average-energy efficient strategy as the number of slots increases, and this also mitigates against background radiation. Work on coded PPM includes that of [9]- [12].…”

mentioning

confidence: 99%

Optical repetition MIMO transmission with multipulse PPM

Wilson

Brandt-Pearce

Cao

et al. 2005

IEEE J. Select. Areas Commun.

208

View full text Add to dashboard Cite

show abstract

“…Note that if the spatial intensity distribution is known, and the location and size of each detector element also are known, then conditioning on the spatial intensity distribution is equivalent to conditioning on the array of intensity components, each of which is still a function of time. Assuming that each array element observes the sum of a signal field plus multimode Gaussian noise field with average noise count per mode much less than one, the array outputs can be modeled as conditionally independent Poisson processes, conditioned on the average signal intensity over each detector element [2,4]. Hence, we denote the joint conditional sample function density of the array as…”

Section: B Array-detector Modelmentioning

confidence: 99%

Adaptive detector arrays for optical communications receivers

Vilnrotter

Srinivasan

2002

IEEE Trans. Commun.

View full text Add to dashboard Cite

show abstract

“…Thus z is both amplitude and angle modulated, and the noise is a multiplicative-lognormal process [19], [44], including both phase and amplitude noise.…”

Section: 37)mentioning

confidence: 99%

“…is an important model in some optical communication problems [44]. In many cases, changes in the transmission medium --e.g., turbulence in the (2), is isomorphic to S…”

Section: 37)mentioning

confidence: 99%

Estimation for Bilinear Stochastic Systems

Willsky

Marcus

1975

Lecture Notes in Economics and Mathematical Systems

View full text Add to dashboard Cite

In this paper we consider several applications of bilinear stochastic models in which state estimation is an important problem. Bilinear stochastic models occur naturally in many communication problems, including noisy oscillators and phase-lock loops, in which the system evolves on the circle S l .Similar models arise in the estimation of the position of an orbiting body (in which the state evolves on the 2-sphere S2) and in the estimation of the orientation of a rotating rigid body (which evolves on SO(3)).The advection-diffusion model of air pollution involves partial differential equations which, when discretized, include bilinear stochastic terms due to the random fluctuations in wind velocity and source rate.Three techniques for the solution of bilinear estimation problems are presented. First, finite dimensional optimal nonlinear estimators are presented for certain bilinear systems evolving on solvable and nilpotent Lie groups. Then the use of harmonic analysis for estimation problems evolving on spheres and other compact manifolds is investigated. Finally, an approximate estimation technique utilizing cumulants is discussed. tThis paper is to be presented at the U.S. -Italy Seminar on Variable

show abstract

Communication theory for the turbulent atmosphere

Cited by 53 publications

References 40 publications

Optical repetition MIMO transmission with multipulse PPM

Optical repetition MIMO transmission with multipulse PPM

Adaptive detector arrays for optical communications receivers

Estimation for Bilinear Stochastic Systems

Contact Info

Product

Resources

About