| QAM接收机的定时误差估计算法的研究 |
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| 引用本文： | 谭泽富,晏先伟,刘华平.QAM接收机的定时误差估计算法的研究[J].电视技术,2011,35(3):47-49. |
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| 作者姓名： | 谭泽富 晏先伟 刘华平 |
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| 作者单位： | 重庆邮电大学通信与信息工程学院;重庆四联微电子有限公司; |
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| 基金项目： | 重庆市重大科技攻关项目(CSTC,2009AA2027):高清数字电视多模解码芯片研究及产业化 |
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| 摘 要： | 定时恢复是全数字接收机中的一项关键技术。以Gardner定时误差检测算法为基础,从理论上对算法的计算复杂度、以及整个定时恢复环路实现的难易程度对其进行分析。以64QAM为例对整个环路进行了仿真验证,该算法对载波相位不敏感,并且简单易行,适用于QAM信号的定时恢复。
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| 关 键 词： | 定时恢复 Gardner算法 64QAM 误差估计 |
Researching on Timing Error Estimation of QAM Receiver |
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| TAN Zefu,YAN Xianwei,LIU Huaping.Researching on Timing Error Estimation of QAM Receiver[J].Tv Engineering,2011,35(3):47-49. |
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| Authors: | TAN Zefu YAN Xianwei LIU Huaping |
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| Institution: | TAN Zefu1,YAN Xianwei1,LIU Huaping2(1.Department of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China,2.Chongqing Sic Micro Electronics Co.,Ltd,Chongqing 401121,China) |
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| Abstract: | Timing recovery is one of the key technologies for the digital receiver.This paper base on the Gardner timing error detection algorithm,which has analyzed the computational complexity and the degree of realization difficulty for the whole timing recover loop.At last,it takes the 64QAM as an example to simulate the timing recovery loop.The simulation results express that the algorithm is not sensitive the carrier phase,and easy for QAM timing recovery. |
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| Keywords: | Timing recovery Gardner 64QAM error estimation |
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