短波自适应通信的信道仿真算法研究  

Channel Simulation Algorithm for HF Adaptive Communication System

作　　者：范伟[1] 朱家成[1] 胡飞[1] 

机构地区：[1]中国电子科技集团公司第三十研究所,四川成都610041

出　　处：《通信技术》2013年第2期19-21,25,共4页Communications Technology

摘　　要：基于自适应选频技术和自适应编码调制技术的短波自适应通信技术得到广泛研究,针对短波信道不可预测性、多径和衰落等特点,基于Watterson短波信道模型,提出了一种纯软件的可用于评估短波自适应通信系统性能的短波信道仿真算法,该算法能够刻画短波信道中长期变化(分钟量级),具有全数字化特点,可实时集成实现到短波自适应调制解调器中,使该调制解调器具有信道模拟器功能,具有很重要的实际意义。HF adaptive communication technology based on adaptive frequency selection and adaptive coding modulation is now widely studied. In order to evaluate the performance of HF adaptive communication technology, a software HF channel simulation based on Watterson channel model is proposed, aiming at the characteristics of HF channel, including unrepeatability, multipath and fading. This algorithm could describe medium and long （in minutes） term variations of HF channel, and the whole implementation of this algorithm is digital. At the same time, it could be integrated into adaptive modem so that the modem coulld be used as a channel simulator. This is important practical significance.

关 键 词：短波自适应通信 信道建模 多径 多普勒扩展 

分 类 号：TN82[电子电信—信息与通信工程]