Computing and Library Services - delivering an inspiring information environment

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

Metadata only available from this repository.


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
Related URLs:
Depositing User: Briony Heyhoe
Date Deposited: 05 Dec 2008 13:49
Last Modified: 28 Aug 2021 10:43


Downloads per month over past year

Repository Staff Only: item control page

View Item View Item

University of Huddersfield, Queensgate, Huddersfield, HD1 3DH Copyright and Disclaimer All rights reserved ©