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Investigation of Radius Directed Equalizer and Least Mean Square Equalizer for MIMO Equalization in a 480Gb/s DP-16QAM coherent receiver
Students: Sagi Shtainman, Sagi Radiano
Supervisor: Dr. David Dahan
להסבר מוקלט
Introduction
In recent years there is an exponential growth rate of internet traffic, optical coherent modulation communication technologies have been deployed as a solution.
The Project goals were developing 480Gb/s coherent optical communication system using DP-16QAM modulation format while modelling the physical distortions of the optic fiber as Chromatic Dispersion (CD), Polarization Mode Dispersion (PMD), and polarization crosstalk at the receiver due to random State Of Polarization (SOP) rotations.
We compensate these impairments with advanced DSP methods.
MIMO Algorithms
Simulation Results
Conclusions
We demonstrated the capabilities of the MIMO algorithms of CMA&RDE and LMS systems to compensate the optical fiber impairments in a 480Gb/s modulated in
DP-16QAM optical coherent system:
- After examination of multiple simulation runs with difference values of PMD we found the BER of LMS system achieve better results.
- As examining the system with a dynamic optical channel we found that the
CMA &RDE equalization process is more stable and reliable.
- We found that each of the systems has it’s strengths therefore we recommend that the compensation method should be chosen by the need of the client.
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