基于五维超混沌的太赫兹调制跳变性能分析

Performance Analysis of Terahertz Modulation Hopping Technology Based on Five-dimensional Hyperchaotic System

针对太赫兹通信信号容易被截获的问题,提出了一种基于五维超混沌系统的太赫兹调制跳变方法。根据信道的实时变化,采用改进的信噪比估计算法选择调制类,再通过五维超混沌系统产生的跳变图案随机地选择一种具体的调制方式。仿真结果表明,所提算法对信道的实时预测能力更为准确,在一定的计算复杂度下,相比于传统的混沌序列,其系统性能更好,具有更优的抗截获性能。

Aiming at the problem that terahertz communication signals are easily intercepted,a terahertz modulation hopping method based on five-dimensional hyperchaotic systems is proposed.According to the real-time change of the channel,an improved SNR estimation algorithm is adopted to select the modulation class,and then a specific modulation mode is randomly selected through the hopping pattern generated by the five-dimensional hyperchaotic system.The simulation results show that the proposed algorithm is more accurate in real-time channel prediction.Compared with traditional chaotic sequences,the system performance and anti-interception performance of the proposed method is better under certain computational complexity.