Performance evaluation of an efficient RZ-MQAM modulation scheme in all-optical OFDM transmission systems
All optical orthogonal frequency division multiplexing (AO-OFDM) technique is a promising technique and employed in many military applications for data transmission over long distance. But AO-OFDM signals are very sensitive to nonlinear distortion and these systems suffer from nonlinear impairments....
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Faculty of Science and Technology, University of El Oued
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/62701/1/Performance%20evaluation%20of%20an%20efficient%20RZ-MQAM%20modulation.pdf http://psasir.upm.edu.my/id/eprint/62701/ |
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| Summary: | All optical orthogonal frequency division multiplexing (AO-OFDM) technique is a promising technique and employed in many military applications for data transmission over long distance. But AO-OFDM signals are very sensitive to nonlinear distortion and these systems suffer from nonlinear impairments. This paper describes a novel nonlinear phase noise reduction technique by decreasing interaction time between subcarriers in AO-OFDM transmission systems. This technique mitigates the effects of nonlinearity on all-optical OFDM transmission systems and improves performance of transmission systems. The proposed AO-OFDM transmission system has been successfully simulated and analyzed for estimating phase noise due to cross-phase modulation, self-phase modulation and four-wave mixing. The proposed RZ-8QAM AO-OFDM system with 29 subcarriers is examined and the transmission distance is fixed at 550km. |
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