Μελέτη αλγορίθμων ψηφιακής επεξεργασίας σήματος για ομόδυνο δέκτη QPSK σε οπτικά συστήματα μεγάλων αποστάσεων υψηλής φασματικής απόδοσης

The scope of this dissertation is to investigate the merits and implications of using multilevel modulation formats in optical communications systems. Following the trend in academia and industry, special focus is placed on quadrature phase-shift keying (QPSK), and specifically on polarization division multiplexed (PDM) QPSK. A special kind of receiver is investigated thoroughly, the digital coherent receiver, the equivalent of the coherent quadrature demodulator in classical communications nomenclature. A large number of digital signal processing (DSP) algorithms are implemented, some of them novel, and their performance is examined, analyzed, and compared in a number of practical system scenarios. The impact of transmitter / receiver imperfections and a number of optical fiber impairments on system performance is studied. Experimental results taken from proof-of-concept experiments are also analyzed.

Author dc:creator

• Πέτρου, Κωνσταντίνος

Contributors dc:contributor

• Ρούδας, Ιωάννης
• Petrou, Constantinos
• Βλάχος, Κυριάκος
• Στυλιανάκης, Βασίλειος
• Παλιουράς, Βασίλειος
• Καμαλάκης, Θωμάς
• Μακιός, Βασίλειος
• Τουμπακάρης, Δημήτριος-Αλέξανδρος

• Optical fiber communications
• Polarization
• Quadrature phase shift keying
• Polarization division multiplexing
• Optical coherent phase- and polarization-diversity receivers
• Signal processing algorithms
• 621.382 7
• Οπτικές τηλεπικοινωνίες
• Πόλωση
• Τετραδικές διαμορφώσεις φάσης
• Πολυπλεξία κατά πόλωση
• Σύμφωνοι οπτικοί δέκτες διαφοροποίησης φάσης και πόλωσης
• Αλγόριθμοι επεξεργασίας σήματος

Statement dc:rights

• 0

Language dc:language

en

Handle dc:identifier

https://hdl.handle.net/10889/3832

OAI identifier oai:identifier

oai:nemertes.library.upatras.gr:10889/3832