Systems Engineering and Electronics ›› 2025, Vol. 47 ›› Issue (5): 1495-1506.doi: 10.12305/j.issn.1001-506X.2025.05.12

• Sensors and Signal Processing • Previous Articles    

Frequency-controllable FSK-PSK waveform design algorithm based on KKT optimality conditions

Shurong LYU1, Siqi LIU1, Huili SHI2, Jindong ZHANG1,*   

  1. 1. College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211016, China
    2. Leihua Electronic Technology Research Institute, Aviation Industry Corporation of China, Wuxi 214063, China
  • Received:2023-10-09 Online:2025-06-11 Published:2025-06-18
  • Contact: Jindong ZHANG

Abstract:

In response to the degradation of correlation performance in frequency shift keying-phase shift keying (FSK-PSK) waveform due to random frequency point encoding sequences, a model for frequency controllable FSK-PSK waveform optimization is developed. Starting from the Karush-Kuhn-Tucker(KKT) optimality condition, an optimal subproblem iterative algorithm is designed to minimize the autocorrelation integrated sidelobe level(ISL) as the objective function. Finally, through simulation experiments and comparison with the FSK-PSK waveform optimized by multi-objective quantum genetic algorithm(MoQGA), it is verified that the designed frequency controllable FSK-PSK waveform improved the autocorrelation sidelobe performance by an average of 4.47 dB at different sub pulse frequency point ratios, and further reduced the cross-correlation sidelobes.

Key words: low-sidelobe waveform, KKT (Karush-Kuhn-Tucker) conditions, frequency shift keying-phase shift keying (FSK-PSK) waveform, frequency controllable

CLC Number: 

[an error occurred while processing this directive]