实时空间信息网络数字基带仿真平台设计  

Design of Real-time Digital Baseband Simulator for Spatial Information Networks

作　　者：刘剑锋 马上[1] 杨泽国 刘立祥[2] 胡剑浩[1] Liu Jianfeng;Ma Shang;Yang Zeguo;Liu lixiang;Hu Jianhao(National Key Laboratory of Science and Technology on Communication, Chengdu 611731, China;Institute of Software Chinese Academy of Sciences, Beijing 100190, China)

机构地区：[1]电子科技大学通信抗干扰技术国家级重点实验室,成都611731 [2]中国科学院软件研究所,北京100190

出　　处：《系统仿真学报》2018年第5期1755-1761,1771,共8页Journal of System Simulation

基　　金：国家自然科学基金(61571083);中央高校基本业务费(ZYGX2014J009)

摘　　要：传统的信道模拟器侧重于对空口信号的传播特性进行仿真,在多链路动态拓扑变化的空间信息网络实时仿真中无能为力。针对现代空间信息网络的特点,提出了一种可扩展空间信息网络模拟器架构,以及基于基带数据包处理的信道传播特性和拓扑动态变化仿真方法。设计并实现了一种基于数字基带的实时空间信息网络仿真平台,实现空间信息网络各链路的精准延时、实时误码插入及动态拓扑变化仿真。平台支持16~256个仿真端口及多达1024条链路,可配置误码率范围为1e-3到1e-9,数据率为100 kbps时传输延时可可配置范围为1 ms^20 min。The commonly used channel simulators always focus on the characteristics of RF signals at the receiver. However, they are costly in real-time simulation for spatial information network with multi-link and dynamic topology change. In this paper, a scalable simulator architecture for spatial information network, a simulation method for dynamic topology and channel propagation characteristics based on baseband data packages are presented. Based on this, a real-time spatial information networks simulation platform is designed and implemented. The platform can simulate the channel propagation delay, bit error, and dynamic topology changes for spatial information network. It supports 16 to 256 emulated nodes and up to 1024 links with dynamic topology change for spatial network. The delay and bit errors rate （BER） （le-3 to le-9） can be configured for each link independently. When the data rate is 100 kbps, the propagation delay range can be configured from 1 millisecond to 20 minutes.

关 键 词：空间信息网络 数字基带仿真 动态网络拓扑 延时 误码 

分 类 号：TN927[电子电信—通信与信息系统]