基于Walnut Street修正模型的短波信道仿真算法  

HF Channel Simulation Algorithm Based on Improved Walnut Street Model

作　　者：曹鹏[1] 景渊[1] 黄国策[1] 

机构地区：[1]空军工程大学电讯工程学院,西安710077

出　　处：《计算机科学》2010年第3期91-93,共3页Computer Science

基　　金：陕西省自然科学基金项目(2007F03);国防科技重点实验室基金项目(51473020105JB3203)资助

摘　　要：传统短波信道Watterson模型只能模拟信道短期变化规律。为模拟短波信道在各种长度时间段内的变化,针对短波信道接收端信噪比统计特性,提出了一种基于信噪比重放的短波信道仿真算法。该算法以Walnut Street信道模型为基础,通过对实际观测数据进行分析处理,建立接收端信噪比变化的中期和长期变化统计模型,联合Watterson模型实现信道模拟。仿真结果表明,该算法可反映实际信噪比变化规律,为短波网络仿真提供精确的信道质量模拟。Traditional HF channel model-Watterson Model could simulate channel variations during short terms. In order to simulate channel variations during various terms, a HF channel simulation algorithm based on SNR reproduction was presented according to the statistical characteristics of HF channel. With Walnut Street model as its foundation, observed data were analyzed and processed, the SNR variation models during intermediate and long terms were built, combined with traditional Watterson channel model, the specified HF channel was simulated through SNR prediction. Simulation results show that this algorithm could simulate SNR variations in real channel, which provides good simulation of channel quality for HF network simulation.

关 键 词：短波 网络仿真 信噪比 WALNUT STREET Watterson 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构] TN011.2[自动化与计算机技术—计算机科学与技术]