陆地移动卫星信道高速仿真模型设计

文中提出了实现陆地移动卫星(LMS)信道高速仿真模型的方法。该方法采用莱斯正弦和法，基于四分之一周期三角函数查表法实现陆地移动卫星信道快速仿真模型设计，使系统在仿真的过程中，一方面避免了复杂的三角函数运算和乘法运算；另一方面，相对整周期查表法也大大节省了系统资源，此优点在设计对数高斯信道模型上体现尤为突出。

Design of High-Speed Simulation Model for Land Mobile Satellite Channels

This paper describes a procedure for the design of fast simulation models for LMS channels.The presented method is based on an efficient implementation of Rices sum of sinusoids by using qtr. trigonometric function table look-up techniques.During system simulation,on the one hand,the time consuming operations like multiplications and trigonometric operations are not required,on the other hand,the system resource is saved greatly compared with whole period table look-up method,which is excellent during designing log-normal channel.