Capacity of a direct detection optical communication channelThe capacity of a free space optical channel using a direct detection receiver is derived under both peak and average signal power constraints and without a signal bandwidth constraint. The addition of instantaneous noiseless feedback from the receiver to the transmitter does not increase the channel capacity. In the absence of received background noise, an optimally coded PPM system is shown to achieve capacity in the limit as signal bandwidth approaches infinity. In the case of large peak to average signal power ratios, an interleaved coding scheme with PPM modulation is shown to have a computational cutoff rate far greater than ordinary coding schemes.
Document ID
19820037125
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Tan, H. H. (California, University Irvine, CA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1980
Subject Category
Communications And Radar
Meeting Information
Meeting: In: NTC ''80; National Telecommunications Conference