Search - sampling frequency offset

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[Other] OFDM DL : 0: 本文首先概述了OFDM 的原理、特征和关键技术，介绍了系统需要的几种同步。然后就同步误差对系统性能的影响进行了简单的分析，表明定时偏差和采样频率偏差将会引入码间干扰，载波频率偏差导致载波间干扰的发生。因此，在OFDM系统接收机中定时的确定、载波频率偏差和采样频率偏差的纠正是信号恢复的关键。之后对OFDM系统同步的几种实现方法进行了介绍，分析了各同步方法的性能。-The paper first outlines the principles of OFDM, features and key technologies, the system needs to introduce several synchronization. Synchronization error and then the impact on system performance for a simple analysis, show that the timing deviation and the sampling frequency deviation will introduce inter-symbol interference, the carrier frequency deviation led to the occurrence of ICI. Therefore, in OFDM system receiver to determine the timing, carrier frequency offset and sampling frequency offset correction signal to restore the key. After the OFDM system to achieve synchronization of several methods of introduction, an analysis of the performance of the synchronization method.
Date : 2025-12-26 Size : 262kb User : dajinyu
[Other] LMS_moxiaokai DL : 0: 输入信号: cm.txt 含有胎儿和母亲的心电信息的混合心电信号. mother1024.txt 母亲的心电信号参数: 抽样频率:200Hz 数据长度:1024 要求: 用自适应滤波的LMS算法抵消掉混合心电信号中母亲的心电信号。注意u和N的选取，在报告中说明u和N的选取对滤波结果的影响。自适应滤波By莫小凯-Input signal: cm.txt containing the fetus and the mother of ECG information mixed ECG mother1024.txt mother ECG parameters: sampling frequency: 200Hz data length: 1024 requirements: LMS adaptive filtering algorithm offset mixed ECG ECG mother. Note that the selection of u and N u and N selection filtering results in the report. By Mo Oscar adaptive filtering
Date : 2025-12-26 Size : 90kb User : moxiaokai