Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 26, Issue 4, Pages 376-379Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2013.2293515
Keywords
Optical communication; orthogonal frequency-division-multiplexing (OFDM); coherent communication; laser phase noise; nonlinear phase noise
Funding
- National Basic Research Program of China [2010CB328201]
- National Natural Science Foundation of China [61077053, 60932004, 61275005]
- National Hi-Tech Research and Development Program of China [2012AA011302, 2011AA01A106]
- Program for New Century Excellent Talents in University
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In this letter, we develop an orthogonal basis expansion (OBE)-based phase noise suppression method for polarization-division-multiplexed (PDM) coherent optical orthogonal frequency-division-multiplexing (CO-OFDM) systems. Compared with the conventional phase noise suppression approach, the OBE method not only significantly promotes the system tolerance of laser phase noise, but also improves the system robustness against nonlinear phase noise. The theoretical analysis is validated by numerical simulations of PDM CO-OFDM systems with 16-quadrature-amplitude-modulation format.
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