Qiang Li, Xiaofang Cao, Dong Shen. Extraction Algorithm of Co-Frequency Aliased Signals Based on Relaxation Modified Fast Independent Component Analysis[J]. Laser & Optoelectronics Progress, 2022, 59(11): 1107003
- Laser & Optoelectronics Progress
- Vol. 59, Issue 11, 1107003 (2022)
Fig. 1. Principle of blind source separation
Fig. 2. Flow chart of DLM-FastICA algorithm
Fig. 3. Source signal waveforms
Fig. 4. Source signal spectra
Fig. 5. Mixed signals at receiver
Fig. 6. Signals extracted by FastICA algorithm
Fig. 7. Signals extracted by DLM-FastICA algorithm
Fig. 8. Similarity coefficients between extracted signals and source signals. (a) Extracted signal 1 and source signal; (b) extracted signal 2 and source signal; (c) extracted signal 3 and source signal; (d) extracted signal 4 and source signal
Fig. 9. Comparison of average similarity
Fig. 10. Comparison of algorithm convergence
Fig. 11. Comparison of algorithm iteration times
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