江苏科技信息
江囌科技信息
강소과기신식
JIANGSU SCIENCE & TECHNOLOGY INFORMATION
2015年
5期
36-38
,共3页
多径衰落信道%信道软件仿真%Watterson模型
多徑衰落信道%信道軟件倣真%Watterson模型
다경쇠락신도%신도연건방진%Watterson모형
multi-fading channel%channel simulation%watterson model
高频通信通常应用在较远距离的通信中，因为它的架设成本低，变化灵活，抗干扰的能力也很强。其信道为多径衰落信道，因此对该信道的特性仿真近几十年来都十分活跃。文中研制的软件仿真器利用计算机的声卡实现对基带信号的信道仿真，是一个低成本的设计，能够全面地反映多径衰落信道的多径时延、多普勒频移、多普勒扩展等特性。
高頻通信通常應用在較遠距離的通信中，因為它的架設成本低，變化靈活，抗榦擾的能力也很彊。其信道為多徑衰落信道，因此對該信道的特性倣真近幾十年來都十分活躍。文中研製的軟件倣真器利用計算機的聲卡實現對基帶信號的信道倣真，是一箇低成本的設計，能夠全麵地反映多徑衰落信道的多徑時延、多普勒頻移、多普勒擴展等特性。
고빈통신통상응용재교원거리적통신중，인위타적가설성본저，변화령활，항간우적능력야흔강。기신도위다경쇠락신도，인차대해신도적특성방진근궤십년래도십분활약。문중연제적연건방진기이용계산궤적성잡실현대기대신호적신도방진，시일개저성본적설계，능구전면지반영다경쇠락신도적다경시연、다보륵빈이、다보륵확전등특성。
High-frequency communication plays a vital role in long haul communications, on account of its unique merits such as low cost, convenience to be generated and strong resistance to damage. The high-frequency communication channel is a multipath and fading channel which has been studied for quite a time. Software simulator presented in this paper achieves the simulation of baseband with the sound card of computer, which costs a little and well represent various features of multipath and fading channels such as Multi-path delay, Doppler shift, Doppler spread, etc.
