| 一种基于FPGA实现的QPSK载波跟踪算法 |
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| 作者姓名： | 冯丹 王祖林 |
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| 作者单位： | 北京航空航天大学电子信息工程学院; |
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| 摘 要： | 针对多普勒频移对QPSK解调存在很大影响的问题,提出一种旋转相位叉积自动鉴频环路与科斯塔斯环路结合恢复载波的算法,在FPGA内实现精确频率跟踪和相位跟踪。经仿真和实际电路下载试验,该算法具有载波频率相位跟踪精度较高、消耗资源较小的优点。
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| 关 键 词： | QPSK 叉积自动鉴频环路 COSTAS FPGA |
QPSK Carrier Recovery Algorithm Based on FPGA |
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| Authors: | Feng Dan Wang Zulin |
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| Abstract: | This paper presents a method to combine frequency tracking and phase tracking to demodulate QPSK signal in FPGA according to huge Doppler frequency shift.This method realized frequency and phase recovery in QPSK demodulation.The simula- tion and download test in hardware show that this method has merits of low chip resource cost and user defined configuration. |
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| Keywords: | QPSK CPAFC COSTAS FPGA |
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