Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Wördehoff, Christian"'
Publication in the conference proceedings of EUSIPCO, Lisbon, Portugal, 2014
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02c3f61bf62ea3b843e526a41e480784
Autor:
al Bermani, Ali, Wördehoff, Christian, Pfau, Timo, Hoffmann, Sebastian, Rückert, Ulrich, Noe, Reinhold
This letter presents for the first time 1.25 Gb/s synchronous coherent 16-point Quadrature Amplitude Modulation (16-QAM) transmitted and received data in a real-time homodyne setup with external cavity laser (ECL). For powers larger than ?20dBm, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2294::cf7bec669bca846ec3cedf3d72cdcf6b
https://pub.uni-bielefeld.de/record/2018505
https://pub.uni-bielefeld.de/record/2018505
Wir stellen eine Phasenschätzmethode vor, die für alle QAM-Übertragungssysteme geeignet ist, bei denen die Symbole auf Ursprungsgeraden (Strahlen) mit einheitlichem Winkelabstand angeordnet sind (reguläre Stern-Konstellationen). Für diese QAM-Sc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2294::348aa77725f6bae13cc36bbbf3795e9c
https://pub.uni-bielefeld.de/record/2018530
https://pub.uni-bielefeld.de/record/2018530
Publikováno v:
National Fiber Optic Engineers Conference.
A modified decision-directed polarization control and demultiplex algorithm for coherent receivers is evaluated for QAM schemes up to order 256, and compared against the constant-modulus algorithm adapted for QAM and differential phase compensation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f90eafc8731dd2652c2bd7c2aa59fdc
https://doi.org/10.1364/nfoec.2010.jtha9
https://doi.org/10.1364/nfoec.2010.jtha9
Autor:
Hoffmann, Sebastian, Herath, Vijitha, El-Darawy, Mohamed, Pfau, Timo, Wördehoff, Christian, Peveling, Ralf, Rückert, Ulrich, Noe, Reinhold, ARRAY(0xab1ec18)
Publikováno v:
2009 International Conference on Industrial and Information Systems (ICIIS).
A multiplier-free phase estimation algorithm based on the barycentre approach for coherent QPSK detection is presented. A selectivity mechanism was developed that significantly improved its performance. In addition to recently published measurement r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6ac894b96af627f0d54fafddc4272ca
https://doi.org/10.1109/iciinfs.2009.5429888
https://doi.org/10.1109/iciinfs.2009.5429888
Autor:
Hoffmann, Sebastian, El-Darawy, Mohamed, Pfau, Timo, Wördehoff, Christian, Peveling, Ralf, Rückert, Ulrich, Noe, Reinhold, ARRAY(0xa4481b8)
Publikováno v:
2009 IEEE LEOS Annual Meeting Conference Proceedings.
A multiplier-free phase estimation algorithm for coherent QPSK detection is presented. The barycenter approach is modified by a selectivity mechanism that improves performance. In addition to recently published measurement results, theoretical deriva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56f064b9b2a1e4e4d1da37d948d1fc5f
https://doi.org/10.1109/leos.2009.5343406
https://doi.org/10.1109/leos.2009.5343406
Autor:
Herath, Vijitha, Peveling, Ralf, Pfau, Timo, Adamczyk, Olaf, Hoffmann, Sebastian, Wördehoff, Christian, Porrmann, Mario, Noe, Reinhold, ARRAY(0xafad648)
Test results of the first modular receiver signal processor prototype for coherent polarization-multiplexed QPSK transmission are presented. The achieved BER at a data rate of 10 Gb/s is well below FEC threshold.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a53ab7f67571600d05fd3986a3de8b3
https://pub.uni-bielefeld.de/record/2493834
https://pub.uni-bielefeld.de/record/2493834
Autor:
Pfau, Timo, Peveling, Ralf, Herath, Vijitha, Hoffmann, Sebastian, Wördehoff, Christian, Adamczyk, Olaf, Porrmann, Mario, Noe, Reinhold, ARRAY(0xac5ba50)
We outline the hardware architecture of coherent optical receivers supporting ≫40 Gb/s data rates and extract constraints for compatible signal processing algorithms. Additionally a chipset layout for a 40 Gb/s digital coherent polarization-multipl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a983bba9b1b4e3f2246403841ba72e6f
https://pub.uni-bielefeld.de/record/2493855
https://pub.uni-bielefeld.de/record/2493855