一种基于自相关矩阵的OFDM信号同步参数盲估计算法
doi: 10.3724/SP.J.1146.2006.01114
A Blind Estimation Algorithm of Synchronization Parameter for OFDM Signals Based on Auto-correlation Matrix
-
摘要: 该文提出了利用自相关矩阵实现OFDM信号符号定时参数和频偏估计算法。该算法不需要数据辅助，通过使得接收信号自相关矩阵非对角线元素的模值之和达到最小实现分数倍频偏的跟踪，通过判断对角线元素位置发生的移动可以准确地估计整数倍频偏，同时通过使得对角线上对应虚载波位置的元素的模值之和最小实现符号同步。文中给出了算法的推导过程和具体应用的步骤。仿真结果表明该算法具有较大的估计范围以及良好的估计精度。Abstract: An algorithm using auto-correlation matrix of received data for OFDM timing and carrier frequency offset estimation is presented in this paper. The algorithm does not need training data. Fractional frequency offset tracking and frame synchronization are implemented by minimizing the modular sum of off-diagonal elements and diagonal elements whose position is corresponding to virtual carriers number respectively. Integral frequency offset is estimated exactly based on the position movements of diagonal elements. Mathematical derivation is also provided in the paper. The simulation results show that the proposed algorithm has a large estimation range and a high resolution.
-
Wang Z and Giannakis G B. Wireless multicarriercommunications: Where Fourier meets Shannon[J].IEEESignal Processing Magazine.2000, 17(3):29-48[2]Beek J J V D, Sandel M, and Borjesson P O. ML estimationof time and frequency offset in OFDM systems[J].IEEETrans. on Signal Processing.1997, 45(7):1800-1805[3]Lashkarian N and Kiaei S. Class of cyclic-based estimatorsfor frequency-offset estimation of OFDM systems[J]. IEEETrans. on Commun, 2000, 48(12): 2139-2149.[4]Helmut B. Blind estimation of symbol timing and carrierfrequency offset in pulse shaping OFDM systems[A]. IEEEICASSP'99, Phoenix, USA, 1999, 5: 2749-2752.[5]Chang Sekchin and Powers E J. Blind estimation of frequencyoffset in OFDM systems using a nonlinear adaptive filter[A].MILCOM 2000. 21st Century Military Communications, LosAngeles, USA, 2000, 2: 917-921.[6]Roman T and Koivunen V. Blind CFO estimation in OFDMsystems using diagonality criterion[A]. IEEE ICASSP'04,Montreal, Canada, 2004, 4: 369-372.[7]佟学俭, 罗涛编著. OFDM 移动通信技术原理与应用[M]. 北京: 人民邮电出版社, 2003年6月, 第三章.Tong Xue-jian and Ruo Tao. Principle and Application ofOFDM Mobile Communication Technology. Beijin: Postsand Telecom Press, Jane, 2003, Chapter 3.[8]Chen B. Maximum likelihood estimation of OFDM carrierfrequency offset[J].IEEE Signa1 Processing Letters.2002,9(4):123-126 期刊类型引用(10)
1. 李浩浩，桑胜波，杨琨. 基于BP神经网络的血压监测算法. 电子设计工程. 2023(07): 113-118 . 
百度学术2. 林冬梅，张育儒，陈晓雷，杨富龙，王敬阳. 基于USB-4221数据采集卡的连续血压测量. 中国医学物理学杂志. 2021(05): 606-612 . 百度学术3. 张畅，陈辉，郑秀娟. 基于优化脉搏波特征的无袖带血压检测方法. 电子测量技术. 2021(24): 1-7 . 百度学术4. 付莹. 无创连续血压测量技术的研究进展分析. 中国医疗器械信息. 2020(02): 11+89 . 百度学术5. 郑嘉强，程云章，边俊杰. 基于脉搏波特征参数的无创连续血压测量研究进展. 中国医学物理学杂志. 2020(06): 749-753 . 百度学术6. 高凤梅，吴攀. 基于嵌入式AI的可穿戴健康管理系统设计. 现代信息科技. 2020(15): 95-97 . 百度学术7. 王辉. 用无创呼吸机治疗冠心病致急性心力衰竭的研究进展观察. 中国医疗器械信息. 2019(08): 16-17 . 百度学术8. 韩团军，尹继武，王楷，赵增群. 基于FPGA的无线动态心电监护系统设计. 电子器件. 2019(04): 1041-1045 . 百度学术9. 李思楠，赵海. 基于多传感器的人体生理状态判别可视化技术. 传感器与微系统. 2019(12): 25-28+32 . 百度学术10. 丑永新，祁春阳，金逸，张瑞雷，顾亚. 基于Hilbert-Huang变换的脉率变异性提取方法. 中国医学物理学杂志. 2018(04): 425-430 . 百度学术其他类型引用(14)
-
百度学术
计量
- 文章访问数: 3154
- HTML全文浏览量: 86
- PDF下载量: 801
- 被引次数: 24
下载:
