DocumentCode :
779669
Title :
Cutoff Rate for PPM Noisy Photon Counting Channel with Soft Decision
Author :
Charbit, M. ; Bendjaballah, C.
Author_Institution :
Ecole Nationale Supérieure d´´Electricité, France
Volume :
35
Issue :
1
fYear :
1987
fDate :
1/1/1987 12:00:00 AM
Firstpage :
122
Lastpage :
125
Abstract :
A new method for bounding the cutoff rate R is presented. As an application, the case of ideal laser input signal with thermal noise on the photon counting PPM channel with soft decision decoding is given. The main result is that the cutoff rate efficiency (defined as \\lim_{s\\rightarrow + \\infty } R/s , where s is the average signal photon number) is given by ( 1- \\gamma )/(1 + \\gamma ) (where \\gamma = n_{0}/(1 + n_{0}), n_{0} being the average thermal noise photons). This value is much smaller than the capacity efficiency, \\log (1/\\gamma ) , given by Pierce et al. in [1].
Keywords :
Coding/decoding; Pulse-position modulation; Broadcasting; Computer aided software engineering; Decoding; Laser beam cutting; Laser noise; Optical noise; Optical receivers; Radio transmitters; Throughput; Traffic control;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOM.1987.1096656
Filename :
1096656
Link To Document :
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