论文部分内容阅读
本文建立了ka频段移动卫星通信系统模型,并利用计算机进行仿真给出了不同天气时信号的误码率,为实际的系统设计提供了理论基础。在本文中信道模型建立为雨衰和多径阴影衰落信道。在该模型中,雨衰信道服从高斯分布,阴影衰落信道服从Nakagami-Rayleigh分布。与现在广泛应用的Loo模型相比,此阴影模型能够更好地利用计算机进行仿真,并能提供较清晰的数学表达式,对陆地移动卫星系统进行定性定量的性能预测。
In this paper, ka frequency band mobile satellite communication system model is established, and the simulation of the computer gives the signal error rate at different weather, which provides the theoretical basis for the actual system design. In this paper, the channel model is established as rain attenuation and multipath shadow fading channel. In this model, the rain attenuation channel obeys Gaussian distribution and the shadow fading channel obeys Nakagami-Rayleigh distribution. Compared with Loo model, which is widely used nowadays, this shadow model can make better use of computer simulation and can provide clearer mathematical expressions for qualitative and quantitative performance prediction of land mobile satellite systems.