平流层通信与地面蜂窝通信频谱共用的干扰特性

Interference Characteristics of Stratospheric and Ground Cellular Communication Sharing the Same Frequency Band

提出了一种平流层通信与地面蜂窝通信频谱共用的系统模型 ,并根据该模型分析了平流层通信系统所受干扰的特性以及此时的通信性能 .以基站发射功率、基站接收功率、地面蜂窝半径、地面蜂窝活动用户数以及平流层天线波束旁瓣衰减幅度为可变参数 ,对平流层通信系统前向链路和反向链路平均误码率的变化进行了分析与仿真 .结果表明 。

This paper put forward a system model under which the stratospheric communciaton system shares the frequency band with the ground communciation system. According to the model, the interference characteristic and communication performance of the stratospheric system were analyzed. The changes of average bit error rate (BER) of the stratospheric system of both forward link and backward link were analyzed and computed, using such variable parameters as the transmitted power and received power of the base station, radius of ground cells, number of active users per ground cell, and side lobe attenuation of the antenna beam. The results show that the stratospheric system keeps fairly good average BER changing performance.