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Proceedings Paper

Virtual array receiver options for 64-ary pulse position modulation (PPM)
Author(s): Antonio J. Mendez; Vincent J. Hernandez; Robert M. Gagliardi; Corey V. Bennett
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Paper Abstract

NASA is developing technology for 64-ary PPM using relatively large PPM time slots (10 ns) and relatively simple electronic-based receiver logic. In this paper we describe photonics-based receiver options for the case of much higher data rates and inherently shorter decision times. The receivers take the form of virtual (array or quadrant) arrays with associated comparison tests. Previously we explored this concept for 4-ary and 16-ary PPM at data rates of up to 10 Gb/s. The lessons learned are applied to the case of 64-ary PPM at 1.25 Gb/s. Various receiver designs are compared, and the optimum design, based on virtual arrays, is evaluated using numerical simulations.

Paper Details

Date Published: 24 February 2009
PDF: 8 pages
Proc. SPIE 7199, Free-Space Laser Communication Technologies XXI, 71990S (24 February 2009); doi: 10.1117/12.809623
Show Author Affiliations
Antonio J. Mendez, Mendez R&D Associates (United States)
Vincent J. Hernandez, Lawrence Livermore National Lab. (United States)
Robert M. Gagliardi, Univ. of Southern California (United States)
Corey V. Bennett, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 7199:
Free-Space Laser Communication Technologies XXI
Hamid Hemmati, Editor(s)

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