| 一种16APSK信号载波残余频偏估计算法 |
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| 引用本文： | 许大正,刘爱军,冯军.一种16APSK信号载波残余频偏估计算法[J].军事通信技术,2010(1). |
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| 作者姓名： | 许大正 刘爱军 冯军 |
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| 作者单位： | 解放军理工大学通信工程学院研究生3队;解放军理工大学通信工程学院卫星通信系;总参谋部通信工程设计研究所; |
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| 摘 要： | 文中提出了一种针对16A PSK信号的非数据辅助的载波残余频偏估计算法。该算法以判决后星座点的相位偏转量与判决符号数之间的数学关系为依据,通过对16APSK星座判决区域进行优化,并结合FFT方法求解相位偏转量的周期得以实现。仿真分析表明,在不同的信噪比条件下该算法通过选择适当的估计长度能快速完成高精度的频偏估计。
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| 关 键 词： | 非数据辅助 载波频偏估计 16阶幅度相移键控 快速傅里叶变换 |
Algorithm for Estimating Frequency Residual Offset of 16-APSK Carrier |
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| XU Da-zheng,LIU Ai-jun,FENG Jun.Algorithm for Estimating Frequency Residual Offset of 16-APSK Carrier[J].Journal of Military Communications Technology,2010(1). |
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| Authors: | XU Da-zheng LIU Ai-jun FENG Jun |
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| Institution: | 1.Postgraduate Team 3 ICE/a>;PLAUST/a>;Nanjing 210007/a>;China/a>;2.Department of Satellite Communication ICE/a>;3.Research Institute of Communication Engineering/a>;PLA General Staff Headquarters/a>;Shenyang 110009/a>;China |
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| Abstract: | An NDA algorithm for 16-APSK carrier frequency residual offset estimation was presented.This algorithm is based on the mathematic relationship of the constellations phase rotations values and the quantity of decision symbols,and is realized by combining with the modification of the constellations decision boundary and FFT analytical method to evaluate the periods of the phase rotations values.Computer simulations indicate that this algorithm can make estimation quickly and precisely by using proper estimati... |
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| Keywords: | non-data-aided carrier frequency deviation estimation 16APSK FFT |
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