Jan, Omar: Implementation and simulation study of coherent optical orthogonal frequency-division multiplexing systems. 2015
Content
Abstract
Zusammenfassung
Acknowledgements
List of Figures
Abbreviations
Symbols
1 Introduction
2 Fundamentals of CO-OFDM
2.1 Principles of OFDM
2.1.1 Principle of Orthogonality
2.1.2 Discrete and Fast Fourier Transform for OFDM
2.1.3 Cyclic Prefix (CP)
2.1.4 Spectral Efficiency (SE)
2.2 DSP Algorithms for CO-OFDM System
3 Simulation Study of CO-OFDM Systems
3.1 Study of Fiber Nonlinearities in CO-OFDM Systems
3.1.1 RF-pilot (RFP) method for XPM mitigation
3.1.2 Partial Carrier Filling (PCF) Technique for SPM mitigation
3.1.2.1 Concept of the Partial Carrier Filling (PCF) Technique
3.1.2.2 Simulation Setup
3.1.2.3 Simulation Results
3.1.3 Subcarrier-Index Modulation (SIM) in CO-OFDM systems
3.2 Study of LPN Impact on CO-OFDM systems with 16-QAM and 1024-point IFFT/FFT
4 Implementation of CO-OFDM Systems
4.1 Transmission setup of the CO-OFDM system
4.2 Study of DFT-spread CO-OFDM systems
4.2.1 Concept of DFT-Spread OFDM
4.2.2 Concept of Non-iterative Interpolation Based LPN Mitigation
4.2.3 Optical back-to-back Experiments on DFT-spread OFDM Systems
4.2.4 Subband Spectral Shaping in DFT-spread CO-OFDM Systems
4.3 Study of the Impact of LPN on CO-OFDM systems with a DFB Laser
5 Summary
A Experimental Components
A.1 Xilinx Virtex-4 FPGAs
A.2 MICRAM DACs
A.3 Avanex SD50-DP IQ-MZM
A.4 ECL and DFB lasers
A.5 Polarization Controllers and 90 Optical Hyprid
A.6 Photodiods and Oscilloscope
A.7 High Speed Receiver
A.8 Fiber Spans
Bibliography