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Coherent detection: n-ary PPM versus PCM

Cryan, R.A., Unwin, Rodney T., Massarella, Alistair J. and Sibley, Martin J.N. (1991) Coherent detection: n-ary PPM versus PCM. Proceedings of SPIE, 1372. pp. 64-71. ISSN 0277-786X

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Abstract

In this paper we present computer results at 1. 5zm comparing coherent n-ary PPM with coherent PCM. We show that for a given fibre bandwidth there is an optimum word size and this occurs when the equivocations attributed to the error sources in n-ary PPM are equal. We conclude that for moderate to high fibre bandwidths homodyne n-ary PPM should achieve an improvement in sensitivity of typically 5 dB over homodyne PSK PCM

Item Type: Article
Additional Information: Proceedings of Coherent Lightwave Communications: Fifth in a Series, Thursday 20 September 1990, San Jose, CA, USA
Subjects: T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Schools: School of Computing and Engineering
School of Computing and Engineering > Systems Engineering Research Group
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Depositing User: Briony Heyhoe
Date Deposited: 05 Dec 2008 13:49
Last Modified: 24 Mar 2010 13:48
URI: http://eprints.hud.ac.uk/id/eprint/2886

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