Qifei Zhao, Shoupeng Wang, Yumeng Xu, Hongpeng Kong, Dong Ren, Daobin Wang, Shanglin Hou. Joint Channel and Carrier Frequency Offset Estimation and Correction for Coherent Optical FBMC/OQAM System[J]. Acta Optica Sinica, 2018, 38(2): 0206003
- Acta Optica Sinica
- Vol. 38, Issue 2, 0206003 (2018)
Fig. 1. Composition and structure of CO-FBMC/OQAM system
Fig. 2. Schematic of the frame and the designed preamble structure in CO-FBMC/OQAM system
Fig. 3. Numerical simulation configuration and spectra of CO-FBMC/OQAM system
Fig. 4. (a) Relative estimated errors of four preambles in back-to-back scenario; (b) EVM value versus laser frequencyoffset in back-to-back scenario (TS4, OSNR at receiver is 20 dB)
Fig. 5. BER performance versus OSNR of CO-FBMC/OQAM system with different laser frequency offsets (a) in back-to-back scenario and (b) after 1500 km transmission; (c) OSNR penalty required at RBE=4×10-3 after 1500 km transmission versus different laser frequency offsets
Fig. 6. Constellations of demodulated signals with different laser frequency offsets after 1500 km transmission at OSNR of 21 dB. (a) CFO is 1 MHz; (b) CFO is 3 MHz; (c) CFO is 5 MHz
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Table 1. Design parameters of four preambles
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