Bit pattern dependence in optical DQPSK modulation

A strong bit pattern dependence in optical transmission links employing multilevel modulation formats when pseudorandom binary sequences are used for modulation is demonstrated. The use of pseudorandom quaternary sequences for multilevel modulation is proposed and an efficient method to generate suc...

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Veröffentlicht in:	Electronics letters 2007-10, Vol.43 (22), p.1223-1225
Hauptverfasser:	VAN DEN BORNE, D, GOTTWALD, E, KHOE, G. D, DE WAARDT, H
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Exact sciences and technology Optical telecommunications Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Transmission and modulation (techniques and equipments)
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Zusammenfassung:	A strong bit pattern dependence in optical transmission links employing multilevel modulation formats when pseudorandom binary sequences are used for modulation is demonstrated. The use of pseudorandom quaternary sequences for multilevel modulation is proposed and an efficient method to generate such sequences is presented.
ISSN:	0013-5194 1350-911X
DOI:	10.1049/el:20072339