Title :
A concatenated coding alternative for the optical PPM channel
Author :
Atkin, G.E. ; Corrales, H.P.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Inst. of Technol., Chicago, IL, USA
Abstract :
The Authors analyze the use of an orthogonal convolutional code to obtain an encoded pulse-position-modulation (PPM) format directly as the encoder output. It is shown that the performance of this coding scheme exceeds the results obtained with block codes over a wider range, achieving good performances on the range 2-3 nats/photon, and a much slower degradation of over 3 nats/photon. Using a concatenated Reed-Solomon code with a proper rate as an outer code, the performance of the overall system is further improved, achieving good performances in the range 3-4 nats/photon.<>
Keywords :
codes; encoding; optical modulation; pulse position modulation; telecommunication channels; Reed-Solomon code; concatenated coding; encoded pulse-position-modulation; optical PPM channel; orthogonal convolutional code; performance; Concatenated codes; Convolutional codes; Modulation coding; Network address translation; Optical modulation; Optical noise; Optical pulses; Optical receivers; Performance analysis; Pulse modulation;
Conference_Titel :
Computers and Communications, 1989. Conference Proceedings., Eighth Annual International Phoenix Conference on
Conference_Location :
Scottsdale, AZ, USA
Print_ISBN :
0-8186-1918-x
DOI :
10.1109/PCCC.1989.37378
