Optical communications system based on direct detection of photons rather than heterodyning of carrier with local oscillator. Direct-detection system uses single laser source, pulse-position modulation, and Reed-Solomon coding to protect against burst errors. Conventional photomultiplier tube is receiver. Technology applicable to terrestrial communications.
Direct-Photon-Detection Communications
NASA Tech Briefs ; 8 , 4
1985-04-01
Miscellaneous
No indication
English
Detection and symbol synchronization for multiple-bit per photon optical communications
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