Zhu, Jingwen (2015) Phase noise compensation for long-haul coherent optical communication systems using OFDM. Masters thesis, Memorial University of Newfoundland.
- Accepted Version
Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
Long-haul optical transmission systems employing coherent optical orthogonal frequency division multiplexing (CO-OFDM) are sensitive to laser phase noise. This causes a common phase rotation and inter-carrier interference. An effective method to compensate for the phase noise is to insert an RF-pilot tone in the middle of the OFDM signal. This RF-pilot is used to reverse the phase distortion at the receiver. This thesis presents a detailed performance analysis of the RF-pilot phase noise compensation scheme in a simulated 64 Gbit/s CO-OFDM system. The effects of various parameters including laser linewidth, Mach-Zehnder modulator drive power, pilot-tosignal ratio, and fiber launch power are investigated. A comparison with the pilot-aided common phase error compensation method is provided to show the differences in the BER performance with respect to the required overhead.
|Item Type:||Thesis (Masters)|
|Additional Information:||Includes bibliographical references (pages 81-88).|
|Keywords:||optical communications, phase noise, OFDM|
|Department(s):||Engineering and Applied Science, Faculty of|
|Library of Congress Subject Heading:||Orthogonal frequency division multiplexing; Radio -Transmitter-receivers--Simulation methods; Signal integrity (Electronics); Electromagnetic interference; Laser communication systems|
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