TY - JOUR
T1 - Challenges in polybinary modulation for bandwidth limited optical links
AU - Vegas Olmos, Juan José
AU - Tafur Monroy, Idelfonso
AU - Madsen, Peter
AU - Suhr, Lau Frejstrup
AU - Cimoli, Bruno
AU - Johansen, Tom Keinicke
AU - Zhurbenko, Vitaliy
N1 - Copyright: © 2016 Vegas Olmos JJ, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
M1 - 1000127
PY - 2016
Y1 - 2016
N2 - Optical links using traditional modulation formats are reaching a plateau in terms of capacity, mainly due to bandwidth limitations in the devices employed at the transmitter and receivers. Advanced modulation formats, which boost the spectral efficiency, provide a smooth migration path towards effectively increase the available capacity. Advanced modulation formats however require digitalization of the signals and digital signal processing blocks to both generate and recover the data. There is therefore a trade-off in terms of efficiency gain vs complexity. Polybinary modulation, a generalized form of partial response modulation, employs simple codification and filtering at the transmitter to drastically increase the spectral efficiency. At the receiver side, polybinary modulation requires low complexity direct detection and very little digital signal processing. This paper provides an overview of the current research status of the key building blocks in polybinary systems. The results clearly show how polybinary modulation effectively reduces the bandwidth requirements on optical links while providing high spectral efficiency.
AB - Optical links using traditional modulation formats are reaching a plateau in terms of capacity, mainly due to bandwidth limitations in the devices employed at the transmitter and receivers. Advanced modulation formats, which boost the spectral efficiency, provide a smooth migration path towards effectively increase the available capacity. Advanced modulation formats however require digitalization of the signals and digital signal processing blocks to both generate and recover the data. There is therefore a trade-off in terms of efficiency gain vs complexity. Polybinary modulation, a generalized form of partial response modulation, employs simple codification and filtering at the transmitter to drastically increase the spectral efficiency. At the receiver side, polybinary modulation requires low complexity direct detection and very little digital signal processing. This paper provides an overview of the current research status of the key building blocks in polybinary systems. The results clearly show how polybinary modulation effectively reduces the bandwidth requirements on optical links while providing high spectral efficiency.
KW - Optical communications
KW - Advanced modulation formats
KW - Microwave filter
KW - Polybinary modulation
U2 - 10.4172/2469-410X.1000127
DO - 10.4172/2469-410X.1000127
M3 - Article
SN - 2469-410X
VL - 3
JO - Journal of Lasers, Optics & Photonics
JF - Journal of Lasers, Optics & Photonics
IS - 1
M1 - 127
ER -