TTIB技术可以抗短波信道上的多径衰落干扰和多卜勒频移。通过对 MATL AB语言的SIMUL INK 仿真环境对短波衰落信道上的 TTIB数传系统进行了仿真和性能分析 ,利用WATTERSON模型建立短波信道模型 ,计算误码率采用了抽样法 (Importance Sampling)。仿真表明将TTIB技术用于高质量的无线数传 ,具有很高的研究价值和应用价值。 TTIB technology can resist multipath fading interference and Doppler shift on shortwave channels. This paper simulates and analyzes the TTIB data transmission system in short-wave fading channels by SIMUL INK simulation environment of MATL AB. The WATTERSON model is used to establish the short-wave channel model, and the sampling error rate is calculated by sampling method (Importance Sampling). Simulation shows that the TTIB technology for high-quality wireless data transmission, with high research value and application value.