无线电工程2017，Vol.47Issue(7)：15-19,5.DOI:10.3969/j.issn.1003-3106.2017.07.04
基于相位旋转和帧头检测的16APSK相位模糊纠正算法
An Algorithm of Phase Ambiguity Correction for 16APSK Based on Phase Rotation and Frame Header Detection
摘要
Abstract
A simple phase ambiguity correction algorithm combining phase rotation and frame header detection is proposed for resolving the multiple phase ambiguity problem of 16APSK signal carrier synchronization.The phase ambiguity problem of 16APSK signal carrier synchronization is briefly introduced,and the mathematical derivation and analysis are carried out.For the proposed algorithm,firstly the phase ambiguity of 16APSK signal is reduced from 12-fold to 4-fold depending on the angle calculation and phase rotation calculated by CORDIC algorithm,then the 4-fold phase ambiguity is corrected by the header detection technique,finally the corrected constellation diagram and decoded data are obtained.In order to verify the feasibility of the proposed algorithm,it is implemented and tested on FPGA.The test results show that the proposed algorithm can correctly resolve the multiple phase ambiguity problem of 16APSK signal carrier synchronization.关键词
16APSK调制/相干解调/相位模糊/相位旋转Key words
16APSK modulation/coherent demodulation/phase ambiguity/phase rotation分类
信息技术与安全科学引用本文复制引用
冯晓文,李庆坤,成亚勇..基于相位旋转和帧头检测的16APSK相位模糊纠正算法[J].无线电工程,2017,47(7):15-19,5.基金项目
国家高技术研究发展计划("863"计划)基金资助项目(2013AA122904). （"863"计划）
