Longjian XU, Changjun LIU, Xiuyou HAN, Shuanglin FU, Yiying GU, Mingshan ZHAO. FPGA-based Microwave Photonic RF Interference Cancellation Control Algorithm and Experimental Verification[J]. Acta Photonica Sinica, 2023, 52(12): 1206001
- Acta Photonica Sinica
- Vol. 52, Issue 12, 1206001 (2023)
Fig. 1. Schematic of microwave photonics RF SCI system
Fig. 2. Impact of amplitude mismatch and delay mismatch on the cancellation depth
Fig. 3. Flow chart of feedback control for microwave photonics RF SIC system by FPGA
Fig. 4. Flow chart of cross-correlation and particle swarm optimization combining algorithm
Fig. 5. Schematic of vector coordinate rotation and solution searching
Fig. 6. Flow chart of particle swarm algorithm for microwave photonic RF self-interference cancellation
Fig. 7. Flow chart of microwave photonics RF SIC control algorithm
Fig. 8. Experimental structure of microwave photonics RF SIC system with feedback control
Fig. 9. The RF SIC depth versus the optimal attenuation and delay adjustment of microwave photonics RF SIC system
Fig. 10. Spectrum evaluation of RF self-interference signal with FPGA-based microwave photonic cancellation
Fig. 11. Spectrum of RF self-interference cancellation for the iterative criterion I
Fig. 12. Spectrum of RF self-interference cancellation for the iterative criterion II
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Table 1. The theoretical maximum interference cancellation depth under typical amplitude and delay mismatch
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