Title :
Heterodyne n-ary PPM employing Reed-Solomon codes
Author :
Cryan, R.A. ; Unwin, R.T.
Author_Institution :
Huddersfield Polytech., UK
Abstract :
A performance and optimization analysis for a Reed-Solomon-coded n-ary pulse-position-modulation (PPM) scheme operating over a fiber channel employing heterodyne detection and assuming a Gaussian received pulse shape is presented. Calculated results for transmission efficiency as a function of fiber bandwidth and as a function of PPM symbol size are discussed. It is concluded that the Reed-Solomon coded n-ary PPM system offers an improvement in transmission efficiency of typically 4.1 dB over an uncoded system and 11.8 dB over a heterodyne amplitude-shift-keyed pulse-code-modulated (ASK PCM) system. It is shown that a Reed-Solomon-coded n-ary PPM system can offer the same transmission efficiency as an uncoded system but at a substantially reduced bandwidth and clock rate
Keywords :
error correction codes; optical links; optical modulation; pulse position modulation; Reed-Solomon codes; bandwidth; clock rate; fiber channel; fibre-optical communication system; heterodyne n-ary PPM; optimization; performance; transmission efficiency; Amplitude shift keying; Bandwidth; Optical fibers; Optical filters; Optical mixing; Optical modulation; Optical sensors; Performance analysis; Phase change materials; Reed-Solomon codes;
Conference_Titel :
Global Telecommunications Conference, 1990, and Exhibition. 'Communications: Connecting the Future', GLOBECOM '90., IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-87942-632-2
DOI :
10.1109/GLOCOM.1990.116615
