宿州学院学报2024，Vol.39Issue(3)：5-8,84,5.DOI:10.3969/j.issn.1673-2006.2024.03.002
基于FPGA的改进QAM载波同步算法的研究与实现
Research and Implementation of Improved QAM Carrier Synchronization Algorithm Based on FPGA
摘要
Abstract
The common carrier synchronization algorithms were analyzed and compared,and a joint carrier synchro-nization algorithm applied to quadrature amplitude modulation(QAM)system was proposed from two aspects of fre-quency offset capture capability and phase stability.Hardware description language Verilog HDL and calling IP core were used to realize each functional module.The top-down system design idea was adopted to realize the functions of polarity decision algorithm,decision directed algorithm and optimization algorithm on the field programmable gate array(FPGA)platform.The constellation diagram was formed by using MATLAB to demodulate the recovered base-band signal,which proved that the optimization algorithm can greatly improve the demodulation performance of QAM system.关键词
载波同步/正交振幅调制/现场可编程门阵列/极性判决算法/面向判决算法Key words
Carrier synchronization/Quadrature amplitude modulation/Field programmable gate array/Polarity deci-sion algorithm/Decision directed algorithm分类
信息技术与安全科学引用本文复制引用
朱明慧,黄鹏程,程翔宇..基于FPGA的改进QAM载波同步算法的研究与实现[J].宿州学院学报,2024,39(3):5-8,84,5.基金项目
国家重点研发计划课题(2020YFA0711600) （2020YFA0711600）
安徽省高校省级质量工程项目(2020jyxm0107). （2020jyxm0107）
