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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 11 — Apr. 10, 2000
  • pp: 1776–1782

Capacity of the Low-Photon-Rate Direct-Detection Optical Pulse-Position-Modulation Channel in the Presence of Noise Photons

Mark R. Bell and Shu-Ming Tseng  »View Author Affiliations


Applied Optics, Vol. 39, Issue 11, pp. 1776-1782 (2000)
http://dx.doi.org/10.1364/AO.39.001776


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Abstract

We derive expressions for the capacity of the pulse-position-modulated (PPM) direct-detection photon-counting channel in the presence of noise photons in addition to the signal-dependent shot noise that is normally considered in studying photon counting at low photon rates. We note that even a small mean number of noise photons per PPM count bin significantly decreases the capacity of the channel. These results are useful for comparisons of performance that are obtained by use of real coding and synchronization algorithms with photon-counting PPM schemes that are currently being considered for deep-space optical communications.

© 2000 Optical Society of America

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(060.4510) Fiber optics and optical communications : Optical communications

Citation
Mark R. Bell and Shu-Ming Tseng, "Capacity of the Low-Photon-Rate Direct-Detection Optical Pulse-Position-Modulation Channel in the Presence of Noise Photons," Appl. Opt. 39, 1776-1782 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-11-1776


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