MAP Detectors for Differential Pulse-Position Modulation over Indoor Optical Wireless Communications

Ubolthip SETHAKASET
T. Aaron GULLIVER

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E89-A    No.11    pp.3148-3151
Publication Date: 2006/11/01
Online ISSN: 1745-1337
DOI: 10.1093/ietfec/e89-a.11.3148
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section on Wide Band Systems)
Category: 
Keyword: 
optical wireless communications,  differential pulse-position modulation,  MLSD,  MAP detector,  

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Summary: 
In this letter, it is shown that a MAP detector can be employed with differential pulse-position modulation (L-DPPM) in an indoor optical wireless system. The MAP detector error performance is evaluated and compared with that of a hard-decision detector and MLSD over an intersymbol interference channel. It is shown that a MAP detector provides superb performance even in a dispersive channel with high DT.

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