基于Ka频段的数字卫星广播系统建模仿真

Modeling and Simulation of Digital Satellite Broadcasting System Based on Ka-band

通过研究Ka频段同步卫星通信信道的统计特性以及降雨对卫星通信系统性能的影响,建立一个工作在Ka频段、基于DVB-S标准的数字卫星广播系统仿真平台。在该平台上对不同天气条件下的系统误码率性能进行仿真分析,结果表明,黑云天气对系统性能的影响最大,该系统相比未采用信道编码的系统,性能提高了9 dB左右。

By studying the statistical characteristics and modeling method of the synchronous satellite communication channel at Ka-band and the rainfall influence on the performance of the system,this paper constructs a simulation platform of the digital satellite broadcasting system based on DVB-S standard which works at Ka-band.BER of the system in different climate conditions is simulated and analyzed on the platform,and the results show that the black cloud climate has the worst influence on the performance of the system.The system increases the performance by 9 dB compared with the system without channel coding.