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Ber vs osnr ofdm optisystem2/12/2023 Reference, it is possible to use up to 100 ns symbol length With an separate RF pilot carrier as phase noise The minimum symbol length T is determined byĭispersion, the maximum determined by phase noise of So they are orthogonal over a symbol slot independent of Subcarrier frequencies are spaced 1/T from each other Many (50-10000) digitally generated subcarriers and Integrated optical components needed for low cost High demands on linearity of modulator and detector More subcarriers Less bitrate per subcarrier Longer symbolĬompare with ADSL modem for high speed data over telephone line Optical QPSK system with Polarization Multiplex Optical Carrier not needed if coherent detection! Spectral Efficiency for Various Modulation Formats Introduction why not 100Gb/s On-Off Keying Laboratory of Photonics and Microwave Engineering
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