软件无线电接收机多速率信号的多段处理方法研究  

Research on Multi-stage Multi-rate Processing for SDR Receiver

作　　者：王江[1] 姚远程[1] 

机构地区：[1]西南科技大学信息工程学院,四川绵阳621002

出　　处：《现代电子技术》2010年第1期46-49,54,共5页Modern Electronics Technique

基　　金：国家自然科学基金资助项目(10876035)

摘　　要：在软件无线电数字接收机中,为了支持多种速率的信号处理,通常采用分数倍重采样,在硬件实现时,非常耗时和耗资源,这也成为软件无线电数字接收机的难点。在分析传统实现模型的基础上,提出一种基于整数倍重采样的新方法,即按照一定的分段方法,实现多速率的多段动态处理,可以避免分数倍重采样,节省运算时间和硬件资源。通过Matlab仿真证明,该方法性能良好,实用可行,可以用于数字接收机的多速率处理系统,在其工程实现上有较大的参考意义。Generally,non-integer re- sampling is used in a digital software radio receiver to support multi- rate signal processing,and it is very time- consuming and resource- consuming when implementing the hardware, which has also become a difficulty for the digital software radio receiver. On the basis of a traditional implementation model, a new implementation method, to realize multi -rate multi- stage processing according to a certain segmenting method is proposed, thus non- integer re-sampling can be avoided, the calculating time and hardware resource can be saved. Matlab simulation shows that the method is practicable and feasible,it can be used for a multi- rate processing system of a digital receiver.

关 键 词：多速率处理 整数倍重采样 分数倍重采样 数字接收机 

分 类 号：TN911[电子电信—通信与信息系统]