Mitigation of Nonlinear Distortions in a mm Wave OFDM Photonic Link Employing Digital Signal Pre-Processing

In this paper, a digital pre-distortion algorithm based on Memory Polynomials (MP) is used to mitigate the nonlinearities of millimeter-wave (mmWave) Orthogonal Division Multiplexed (OFDM) Radio over Fiber (RoF) system. We focus on optically generated mmWave broadband OFDM signals by optical heterod...

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Bibliographic Details
Published in2018 20th International Conference on Transparent Optical Networks (ICTON) pp. 1 - 4
Main Authors Oliveira, B. M., Lorences-Riego, A., Monteiro, P. M., Medeiros, M. C. R.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2018
Subjects
Adaptive optics
digital linearization
Integrated optics
millimetre-wave (mmWave)
OFDM
Optical distortion
Optical fibers
optical heterodyning
Optical mixing
radio over fiber (RoF)
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Summary:In this paper, a digital pre-distortion algorithm based on Memory Polynomials (MP) is used to mitigate the nonlinearities of millimeter-wave (mmWave) Orthogonal Division Multiplexed (OFDM) Radio over Fiber (RoF) system. We focus on optically generated mmWave broadband OFDM signals by optical heterodyning of the two phase correlated optical carriers. We successfully decreased the impact of the system nonlinearities by achieving Error Vector Magnitude (EVM) improvement of 6 dB at the FEC limit for a 5 Gbit/s OFDM signal with 64 subcarriers and increase the spurious-free dynamic range (SFDR) of the system by 2 dB.
ISSN:2161-2064
DOI:10.1109/ICTON.2018.8473711