Share Email Print

Proceedings Paper

A comparison of soft-decision decoding algorithms for differential pulse-position modulation (DPPM) in optical wireless communications
Author(s): Ubolthip Sethakaset; T. Aaron Gulliver
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

In this paper, differential pulse-position modulation (DPPM) over an indoor optical wireless link is represented as a Markov source transmitted over a finite-state machine channel. Then, the MAP, Max-Log-MAP and SOVA algorithms are employed for soft-decision decoding of DPPM. The error performance with intersymbol interference is evaluated and compared to hard-decision decoding and MLSD. It is shown that the performance of Max-Log-MAP and SOVA is closed to that of MLSD and MAP with lower complexity.

Paper Details

Date Published: 3 October 2006
PDF: 10 pages
Proc. SPIE 6353, Optical Transmission, Switching, and Subsystems IV, 63532C (3 October 2006); doi: 10.1117/12.686704
Show Author Affiliations
Ubolthip Sethakaset, Univ. of Victoria (Canada)
T. Aaron Gulliver, Univ. of Victoria (Canada)

Published in SPIE Proceedings Vol. 6353:
Optical Transmission, Switching, and Subsystems IV
Chang Soo Park; Shizhong Xie; Curtis R. Menyuk; Ken-ichi Kitayama, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?