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M-ary FSK signalling for incoherent all-optical CDMA networks

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5 Author(s)
Iversen, K. ; Heinrich-Hertz-Inst. fur Nachrichtentech. Berlin GmbH, Germany ; Jugl, E. ; Kuhwald, T. ; Muckenheim, J.
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We present a novel approach for the combination of M-ary FSK data signalling with incoherent all-optical code division multiple access (CDMA) systems. In contrast to well-known pulse position modulation (PPM) schemes no critical frame synchronisation is necessary and less frequencies than in wavelength division multiplexing (WDM) are needed, resulting in an improved performance. The M-ary source coding leads to a lower repetition rate of the used tunable mode locked laser or to a higher data rate than in OOK/CDMA systems. The filter bank of the maximum likelihood detector can be easily realized by arrayed waveguides. The theoretical performance for optical orthogonal codes (OOC) is analysed and a comparison to OOK and PPM is given

Published in:

Global Telecommunications Conference, 1996. GLOBECOM '96. 'Communications: The Key to Global Prosperity  (Volume:3 )

Date of Conference:

18-22 Nov 1996