电讯技术2016，Vol.56Issue(3)：290-294,5.DOI:10.3969/j.issn.1001-893x.2016.03.010
一种高速捷变并行调制矢量信号源的FPGA实现
FPGA Implementation of an Agile Parallel Modulation Vector Signal Generator
罗义军 1陆冬冬 1李勤2
作者信息
- 1. 武汉大学 电子信息学院，武汉430072
- 2. 武汉大学 电气工程学院，武汉430072
- 折叠
摘要
Abstract
In order to save the frequency shifting time( FST) of carrier in modulation,critical factors of FST are analyzed in this paper. A parallel structure of sinusoidal signal synthsis is proposed to solve the problem that the maximum frequency is limited by field programmable gate array( FPGA) clock. A novel structure is provided in the quadrature modulation of vector signal to solve the problem that the sample time is limited by FPGA clock. By writing Verilog code ,the vector signal modulation in parallel structure is implemented on FPGA,of which the working clock is 160 MHz and the sample rate is 1. 92 Gsample/s,the carrier's fre-quency is variable from 200~300 MHz,and the FST is less than 35 ns. It is proved that the parallel struc-ture in carrier generation and the parallel structure in modulation are practical ways to overcome the restric-tion of FPGA clock.关键词
矢量信号源/并行载波生成/高速捷变/并行调制结构/FPGA实现Key words
vector signal source/parallel frequency generation/agile frequency shifting/parallel modulation structure/FPGA implementation分类
电子信息工程引用本文复制引用
罗义军,陆冬冬,李勤..一种高速捷变并行调制矢量信号源的FPGA实现[J].电讯技术,2016,56(3):290-294,5.
