An Efficient Algorithm for Low-PAPR Comb Jamming Signal Synthesis

Broadband blocking jamming proves effective in interfering with radio frequency systems such as radar and communication systems. However, this method results in a significant waste of energy and bandwidth resources. In contrast, comb jamming stands out for its ability to utilize energy and bandwidth resources more efficiently, making it a widely adopted technique. Despite its advantages, the peak-to-average power ratio (PAPR) of the comb jamming signal is relatively high. Thus, the radio frequency amplifier system cannot work efficiently in a saturated condition and nonlinear effects are inevitable. Therefore, the design of comb jamming signal with low-PAPR is of great importance. In this paper, we focus on the design of comb jamming signal with low-PAPR. To this end, we propose to optimize the initial phases of the sinusoidal signals to reduce the PAPR of comb jamming signal. We show that the PAPR optimization problem is indeed a min-max problem. To tackle the encountered non-convex problem, we use the ℓ
p
smoothing method to approximate the objective function into a quadratic form. Then we use the minorization-maximization based method to tackle the resultant optimization problem. Simulation results show that the proposed algorithm can effectively reduce the PAPR of the comb jamming signal.