Waveform Design of Sparse Frequency with Limited ISL Performance

Sparse frequency signal is a very effective solution to the spectrum congestion problem. However, the sparsity of the spectrum leads to the degradation of the signal’s autocorrelation function performance. In this paper, we design a discontinuous spectral signal with limited Integrated Sidelobe Level (ISL) based on the alternating direction multiplier method (ADMM) framework. The iterative process in the algorithm is solved by the gradient algorithm. The computation of the problem gradient can be accelerated by the Fourier transform. In order to prove the effectiveness of the algorithm, simulation experiments are performed.