Zobrazeno 1 - 10
of 27
pro vyhledávání: '"C.S. Petrou"'
Publikováno v:
Journal of Lightwave Technology. 29:1721-1728
Polarization division multiplexed (PDM) quadrature phase-shift keying (QPSK) coherent optical systems employ blind adaptive linear electronic equalizers for polarization-mode dispersion (PMD) compensation. In this paper, we compute the performance of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d14fdfc51657512f3986cecbf8731926
https://doi.org/10.1109/jlt.2011.2136320
https://doi.org/10.1109/jlt.2011.2136320
Autor:
Michael Sauer, Dimitris Toumpakaris, A. Vgenis, Jason Hurley, John D. Downie, Yihong Mauro, C.S. Petrou, S. Raghavan, Ioannis Roudas
Publikováno v:
Journal of Lightwave Technology. 28:1121-1134
Spectrally-efficient optical communications systems employ polarization division multiplexing (PDM) as a practical solution, in order to double the capacity of a fiber link. Polarization demultiplexing can be performed electronically, using polarizat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95e1e6b7738a4f4780397078837349d9
https://doi.org/10.1109/jlt.2009.2035526
https://doi.org/10.1109/jlt.2009.2035526
Publikováno v:
IEEE Photonics Technology Letters. 22:1247-1249
Polarization-division-multiplexed (PDM) quadrature phase-shift-keying (QPSK) coherent optical systems employ blind adaptive electronic equalizers for polarization-mode dispersion compensation. In this letter, we compare the performance of fractionall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d457ba111e0d4d6dfb17deac9d9e3d54
https://doi.org/10.1109/lpt.2010.2052029
https://doi.org/10.1109/lpt.2010.2052029
Publikováno v:
IEEE Photonics Technology Letters. 22:45-47
Adaptive electronic equalizers using the constant modulus algorithm (CMA) algorithm often converge to a singular coefficient matrix that produces the same signal at multiple outputs. We address this issue in the context of optical communications syst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38262dfa2c96a2ad3605b4b73f78757e
https://doi.org/10.1109/lpt.2009.2035820
https://doi.org/10.1109/lpt.2009.2035820
Publikováno v:
IEEE Photonics Technology Letters. 21:1876-1878
In this letter, we study the impact of quadrature imbalance (QI) on the performance of optical communications systems using polarization-division-multiplexed (PDM) quadrature phase-shift keying (QPSK), with coherent detection and digital signal proce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97819822f39834f57b6e6720457c0926
https://doi.org/10.1109/lpt.2009.2034750
https://doi.org/10.1109/lpt.2009.2034750
Publikováno v:
36th European Conference and Exhibition on Optical Communication.
We theoretically study the performance of various fractionally-spaced, electronic PMD equalizers in coherent optical PDM QPSK systems using the multicanonical Monte Carlo method. We calculate the required number of equalizer taps for a specific outag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92f0e46cb66bc78c8443f7e1b77cf7df
https://doi.org/10.1109/ecoc.2010.5621333
https://doi.org/10.1109/ecoc.2010.5621333
Publikováno v:
2009 IEEE LEOS Annual Meeting Conference Proceedings.
Blind electronic polarization demultiplexing in coherent optical receivers using the constant modulus algorithm occasionally suffers from singularities. The introduction of constraints in the polarization demultiplexer's transfer function compensates
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::901b10369bc82562aaf195a5a94740c7
https://doi.org/10.1109/leos.2009.5343203
https://doi.org/10.1109/leos.2009.5343203
Autor:
Michael Sauer, A. Vgenis, C.S. Petrou, Asimina Kiourti, Yihong Mauro, Ioannis Roudas, Jason Hurley, John D. Downie, S. Raghavan
Publikováno v:
LEOS 2008 - 21st Annual Meeting of the IEEE Lasers and Electro-Optics Society.
We investigate transmitter and receiver imperfections in coherent QPSK systems, and how their impact can be mitigated using DSP algorithms. Quadrature imbalance was found to be a particularly significant effect that will require compensation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba0f671da913da76a370d986321801a7
https://doi.org/10.1109/leos.2008.4688664
https://doi.org/10.1109/leos.2008.4688664
Autor:
Ioannis Roudas, A. Vgenis, Tilemachos Doukoglou, C.S. Petrou, Ioannis P. Chochliouros, George Agapiou
Publikováno v:
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing.
In coherent optical systems, apart from fiber chromatic dispersion and polarization mode dispersion, transmitter and local oscillator phase noise and intermediate frequency offset also have a significant impact on the systempsilas performance. We stu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e3d27b6eed488928a57dfa2506146d0
https://doi.org/10.1109/csndsp.2008.4610833
https://doi.org/10.1109/csndsp.2008.4610833
Publikováno v:
2008 Conference on Lasers and Electro-Optics.
We theoretically investigate the impact of 90deg optical hybrid and balanced detector imperfections on the performance of a coherent intradyne DQPSK system using feedforward frequency and phase estimation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d7a2b942a0d450bd39d4617a09614b2
https://doi.org/10.1109/cleo.2008.4551450
https://doi.org/10.1109/cleo.2008.4551450