一种基于FPGA的短波数字接收机设计与实现  

Design and Implementation of HF Digital Receiver based on FPGA

作　　者：李路[1] 杨建平[1] 袁凤国[1] 罗磊[1] LI Lu;YANG Jian-ping;YUAN Feng-guo;LUO Lei(No.30 Institute of CETC,Chengdu Sichuan 610041,China)

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》2018年第10期2494-2499,共6页Communications Technology

摘　　要：短波信道的多径效应和衰落特性,对短波接收机的设计与实现提出了挑战,尤其是对宽频带高灵敏度短波接收机的设计实现提出了更高要求,而数字接收技术已成为解决这一问题的一种有效手段。通过分析影响中频采样接收机的各种因素,研究了数字接收机的几个关键技术,给出了一种基于FPGA的数字中频接收机实现方案。重点对FPGA内部各主要功能模块的设计方法和实现过程进行了细致描述,并进行了分析和仿真,给出了测试结果。The multipath effect and fading characteristics of HF signal channels pose challenges to the design and implementation of HF signal receivers,and puts forward even higher requirement particularlyfor the design and implementation of broadband high sensitivity HF wideband receivers, and however, digital receiving technology now becomes an effective means to solve this problem. Based on analysis of various factors affecting the IF sampling receiver, several key technologies of the digital receiver are discussed, and an implementation scheme of the digital IF receiver based on FPGA also given. The design method and implementation process of each main functional module inside the FPGA are described in detail, simulation and analysis also done. Finally, the test results are given.

关 键 词：数字中频接收机 短波 FPGA 数字下变频 

分 类 号：TN912.3[电子电信—通信与信息系统]