Author Affiliations
Key Laboratory of Optical Fiber Sensing and Communications, Ministry of Education, University of Electronic Science and Technology of China, Chengdu 611731, Chinashow less
Fig. 1. Schematic of the proposed optical remote heterodyne SSB-OFDM-RoF link based on the KK receiver. S/P, serial-to-parallel; P/S, parallel-to-serial; DAC, digital-to-analog converter; PC, polarization controller; OC, optical coupler; OS, optical splitter; EDFA, erbium-doped optical fiber amplifier; ADC, analog-to-digital converter.
Fig. 2. Signal processing flow of the KK receiver. The baseband signal can be extracted from the RF signal by the KK receiver; meanwhile, the SSBI is effectively eliminated.
Fig. 3. SNR versus the CSPR, where the launch power remains constant and the ROP is fixed at 0 dBm for B2B transmission.
Fig. 4. BER versus ROP with different laser linewidths for 16-QAM and 64-QAM signals after 75 km SSMF transmission.
Fig. 5. BER versus ROP curves with different SSMF lengths with and without CDC for 16-QAM signal.
Fig. 6. BER performance comparison of the KK scheme and mixer-based scheme with 94 Gb/s 16-QAM SSB-OFDM signal. Constellation diagrams for the mixer-based scheme with CSPR of (a) 7 dB, (c) 11 dB, (e) 15 dB, and KK scheme with CSPR of (b) 7 dB, (d) 11 dB, (f) 15 dB at ROP of −5 dBm.
Fig. 7. BER versus ROP with different ENOBs of DAC and ADC.