Information capacity of the Poisson channel

Information capacity of the Poisson channel

The information capacity of the Poisson channel with random or time-varying noise intensity is obtained for time-varying peak and average constraints on the encoder intensity. The channel model is specified, and some definitions from information theory are given. Causal feedback is shown not to incr...

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Veröffentlicht in:IEEE transactions on information theory 1991-03, Vol.37 (2), p.244-256
1. Verfasser: Frey, M.R.
Format: Artikel
Sprache:eng
Schlagworte:
Background noise
Channel capacity
Dark current
History
Jamming
Optical feedback
Optical fiber communication
Optical filters
Optical noise
Optical receivers
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Zusammenfassung:The information capacity of the Poisson channel with random or time-varying noise intensity is obtained for time-varying peak and average constraints on the encoder intensity. The channel model is specified, and some definitions from information theory are given. Causal feedback is shown not to increase the channel capacity for the case of nonrandom noise intensity. For random noise intensity, use of causal feedback does increase capacity; the extent of that increase is quantified. Jamming is considered, and the optimal jamming signal is given. Poisson channels with thinning are introduced.< >
ISSN:0018-9448
1557-9654
DOI:10.1109/18.75239