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Coherent optical fibre digital PPM employing Reed-Solomon error correcting codes

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2 Author(s)
Cryan, R.A. ; Dept. of Electr. & Electron. Eng., Huddersfield Polytech., UK ; Unwin, R.T.

In recent literature digital PPM has been shown to be an effective modulation format for optical communication channels. In this paper the authors show how Reed-Solomon codes, used in conjunction with digital PPM, can further improve receiver sensitivity. They present computer predicted results, at a bit-rate of 565 Mbit/s and a wavelength of 1.5 μm, comparing both uncoded and coded homodyne digital PPM with coherent PCM. It is concluded that the Reed-Solomon coded system offers an improvement of 4 dB over the uncoded system and 9 dB over homodyne PSK PCM

Published in:

Coherent Optical Communications, IEE Colloquium on

Date of Conference:

27 Jun 1990