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Generation and transmission of 85.4 Gb/s realtime 16QAM coherent optical OFDM signals over 400 km SSMF with preamble-less reception

Bouziane, R.; Schmogrow, R. 1; Hillerkuss, D. 1; Milder, P. A.; Koos, C. 1; Freude, W. 1; Leuthold, J. 1; Bayvel, P.; Killey, R. I.
1 Institut für Photonik und Quantenelektronik (IPQ), Karlsruher Institut für Technologie (KIT)


This paper presents a real-time, coherent optical OFDM transmitter based on a field programmable gate array implementation. The transmitter uses 16QAM mapping and runs at 28 GSa/s achieving a data rate of 85.4 Gb/s on a single polarization. A cyclic prefix of 25% of the symbol duration is added enabling dispersion-tolerant transmission over up to 400 km of SSMF. This is the first transmission experiment performed with a real-time OFDM transmitter running at data rates higher than 40 Gb/s. A key aspect of the paper is the introduction of a novel method for OFDM symbol synchronization without relying on training symbols. Unlike conventional preamble-based synchronization methods which perform cross-correlations at regular time intervals and let the system run freely in between, the proposed method performs synchronization in a continuous manner ensuring correct symbol alignment at all times.

Verlagsausgabe §
DOI: 10.5445/IR/1000062483
Veröffentlicht am 16.04.2018
DOI: 10.1364/OE.20.021612
Zitationen: 18
Web of Science
Zitationen: 9
Zitationen: 11
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Photonik und Quantenelektronik (IPQ)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
Karlsruhe School of Optics & Photonics (KSOP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2012
Sprache Englisch
Identifikator ISSN: 1094-4087
KITopen-ID: 1000062483
Erschienen in Optics express
Verlag Optica Publishing Group (OSA)
Band 20
Heft 19
Seiten 21612-21617
Nachgewiesen in Web of Science
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