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| 一种改进的定时误差检测算法 | |
| 引用本文： | 程芹,陈伟,龙必起,林霞.一种改进的定时误差检测算法[J].电视技术,2011,35(11). |
| 作者姓名： | 程芹 陈伟 龙必起 林霞 |
| 作者单位： | 1. 武汉理工大学信息学院,湖北武汉430070;上海明波通信技术有限公司,上海201203 2. 武汉理工大学信息学院,湖北武汉,430070 3. 上海明波通信技术有限公司,上海,201203 |
| 摘 要： | 定时恢复环路是数字接收机同步模块的一个重要组成部分,Gardner算法以实现结构简单,不敏感于载波相位,独立于调制方式等优点作为定时误差检测算法广泛应用于数字接收机的定时恢复环路中。鉴于Gardner算法在数字接收机定时同步中的广泛应用,并通过比较Gardner算法及其改进算法的定时抖动和捕获性能,研究了一种改进的Gardner定时误差检测算法。仿真结果表明,该算法对于MPSK恒包络的调制信号定时抖动性能有很明显的改善,并且在小滚降因子下改善仍然成立,但是对于16QAM非恒包络的调制信号改善不理想。 |
| 关 键 词： | 定时误差检测 Gardner算法 自噪声 定时抖动 |
Modified Timing-error Detecting Algorithm |
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| CHENG Qin,CHEN Wei,LONG Biqi,LIN Xia.Modified Timing-error Detecting Algorithm[J].Tv Engineering,2011,35(11). | |
| Authors: | CHENG Qin CHEN Wei LONG Biqi LIN Xia |
| Affiliation: | CHENG Qin1,2,CHEN Wei1,LONG Biqi2,LIN Xia1(1.School of Information Engineering,Wuhan University of Technology,Wuhan 430070,China,2.Shanghai Bwave Technology Co.,Ltd,Shanghai 201203,China) |
| Abstract: | Timing recovery loop is an important part of the synchronization in the digital receiver.Gardner algorithm is widely used in the timing recovery loop of the digital receiver because of the simple structure,the insensitive ability to carrier phase and modulation mode.In this paper,a modified timing-error detecting algorithm through comparing the timing jitter and acquisition capability between Gardner algorithm and its modified algorithms is researched.The simulation results show that this new algorithm has ... |
| Keywords: | timing-error detecting Gardner algorithm self-noise timing jitter |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |