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Capacity and error exponent for the direct detection photon channel. I

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1 Author(s)
Wyner, A.D. ; AT&T Bell Lab., Murray Hill, NJ, USA

The capacity and the lower bound on the error exponent of a direct detection optical channel are derived. The channel input in a T-second interval is a waveform satisfying certain peak and average power constraints for the optical signal. The channel output is a Poisson process with a given intensity parameter; the intensity parameter takes account of the dark-current signal component. An explicit construction for an exponentially optimum family of codes is also presented

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Information Theory, IEEE Transactions on  (Volume:34 ,  Issue: 6 )