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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 4, Iss. 10 — Oct. 1, 2012
  • pp: 812–820

Performance Analysis of Gradual Multi-pulse Pulse-Position Modulation in Deep-Space Optical Communications

Hossam Selmy, Hossam M. H. Shalaby, and Zen Kawasaki  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 4, Issue 10, pp. 812-820 (2012)
http://dx.doi.org/10.1364/JOCN.4.000812


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Abstract

A gradual multi-pulse pulse-position modulation (gradual MPPM) scheme is proposed as a new modulation scheme to improve both the performance and bandwidth-utilization efficiency of the conventional optical multi-pulse pulse-position modulation (MPPM) scheme in deep-space optical communications. Whereas in the conventional MPPM scheme, a fixed number of optical pulses is transmitted in every signal block, a variable number of pulses are transmitted in the proposed scheme. Information is represented by different combinations of the positions of these pulses. The transmission characteristics, bandwidth utilization, and power requirements for the proposed scheme are studied in this paper. Several performance measures are derived and compared with those of the conventional MPPM scheme in deep-space optical communications. Our results reveal that, at the same average power, the proposed gradual MPPM scheme achieves much lower levels of symbol-error rates than those of the ordinary MPPM scheme, whereas, at the same peak power levels, the ordinary MPPM outperforms the gradual scheme. Also, in terms of bandwidth-utilization efficiency, the proposed modulation scheme achieves higher efficiency than the ordinary MPPM by allowing many more symbols to be transmitted per frame.

© 2012 OSA

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4080) Fiber optics and optical communications : Modulation
(060.4510) Fiber optics and optical communications : Optical communications
(060.2605) Fiber optics and optical communications : Free-space optical communication

ToC Category:
Research Papers

History
Original Manuscript: February 22, 2012
Revised Manuscript: August 31, 2012
Manuscript Accepted: September 3, 2012
Published: September 28, 2012

Citation
Hossam Selmy, Hossam M. H. Shalaby, and Zen Kawasaki, "Performance Analysis of Gradual Multi-pulse Pulse-Position Modulation in Deep-Space Optical Communications," J. Opt. Commun. Netw. 4, 812-820 (2012)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-4-10-812

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