高动态环境下猝发DQPSK系统载波跟踪设计与实现

Design and implementation for carrier tracking of burst DQPSK system in high dynamic circumstance

针对高动态环境下猝发DQPSK通信系统,提出一种四相鉴频频率牵引、鉴频辅助鉴相的载波跟踪方案,通过Matlab仿真验证,并编写VHDL程序在FPGA中实现,最终在硬件平台上进行性能测试,测试结果表明该方案可行,硬件实现达到了设计指标要求。

The carrier tracking scheme for frequency pulling of four？phase frequency discrimination and frequency discrimi？nation auxiliary phase discrimination is proposed for burst DQPSK communication system in high dynamic circumstance. The scheme was verified by Matlab simulation,and realized in FPGA with VHDL program. Performance test was proceeded on hard？ware platform. The test results show that the proposed scheme is feasible. Hardware implementation satisfies the requirements of design objective .