基于平台摆动模型的平流层CDMA系统呼叫控制方案

摘要

本文分析了平流层平台摆动对HAPS-CDMA系统的影响,完善了平台不稳定性的研究,并提出摆动对小区内和对小区间干扰因子的概念,给出此时系统容量的计算方法；提出了一种用户呼叫控制方案,即:处于受平台摆动方向上的中心参考小区边缘用户的信号由相邻的两个基站同时接收的策略,来避免“乒乓切换”,仿真结果说明该方案很好的平衡了系统容量和系统资源,对系统性能的改善明显.%The effects of the platform swinging on HASP-CDMA system are analyzed to complete the study on the HAPS instability,the intercell and intracell interference factors caused by the platform swinging are defined, and the capacity algorithm of the HAPS-CDMA swinging model is given.Then a novel user access solution is presented,namely the mechanisms of the signals from the users in the edge of the center reference cell in the swinging direction received by both of the two adjacent base stations to avoid the "pingpong handover". From numerical results it is observed that the algorithms can balance the system capacity and the resource well,and improve the system performance significantly.