载波频率偏移是OFDM系统实现的关键问题之一。
Carrier frequency offset is one of the key problems in OFDM system.
直流侧电流扰动反映到交流定子侧，也将发生频率偏移。
And the resulted AC current on the DC side will have the similar frequency shift when transfers to the stator of the generator.
基于该模型，分析了激光器振荡频率偏移与输出功率变化特性。
The characteristics of oscillation frequency shift and output power changes of the laser diode are analyzed by using the theoretical model.
从理论上描述了单一受激波的场幅值和频率偏移的非线性变化。
The theory describes the temporal nonlinear evolution of the field amplitude and frequency shift of a single wave mode.
其次，分析了由于频率偏移影响傅氏算法精度并提出其改进措施。
Second, this thesis analyses algorithm precision in case of frequency fluctuation and presents improving measures.
OFDM系统存在对数据符号同步和载波频率偏移极为敏感的问题。
The OFDM is sensitive to the synchronization of the OFDM symbol and the carriers' frequency excursion.
雷达测速仪是利用多普勒测速原理，获得运动目标的频率偏移信号。
Police traffic radar USES the theory of Doppler speed detection to measure the offset of the frequency.
本文主要介绍利用斯通利波的频率偏移和时间延迟判断储层渗透性。
The paper mainly introduces the process of estimating the reservoir permeability using the frecquency offset and time lag of Stoneley wave.
分析了电力系统频率偏移和谐波对传统感应电能表误差特性的影响。
The influence of frequency deviate or harmonics to the traditional kilowatt hour meter of electromagnetic induction type is analysed in the paper.
但实际运用时，其精度都会受到采样定时误差和信号频率偏移的影响。
The frequency shift is obtained and compared with the effect of air damping.
从相关函数的基本原理出发，分析了频率偏移对信号测量准确度的影响。
According to the fundamental principle of correlation function, the effect of measuring accuracy resulting from frequency deviation is analyzed in this paper.
而CTTHS能够保证结构物在工程振动中出现频率偏移时的减振效果。
The CTTHS is capable of guaranteeing the reduction effect of a structure in case structural frequency excursion happened in engineering vibration.
但两者都对载波频率偏移敏感，且在AWGN和多普勒频移环境下表现相当。
But both of them are sensitive to carrier frequency shift, further, they have comparative BER under AWGN and Doppler shift environment.
在卫星导航定位系统中，多普勒频率偏移是影响接收机性能的关键因素之一。
In the satellite navigation and positioning system, Doppler shift is one of the key problems that may degrade the performance of the satellite receiver.
通过数据相关运算，结合构造训练序列的特点，得出比较准确的频率偏移值。
Base on structure characteristics of the training sequence, a quite accurate frequency offset can be obtained through a data correlation operation.
如果有人通过，由运动人体返回的超声信号会因为多普勒效应而产生频率偏移。
Once someone passes, based on the Doppler effect, the frequency of the signals reflected by the moving body is different from the signals transmitted.
考虑到短波信道频率偏移的不确定性提出了相关搜索、FFT捕获的信号捕获方案。
Considering the uncertainty of frequency excursion, the scheme of signal capturing of correlate searching, FFT capturing is bring forward.
方案利用时频联合估计来得到可靠的信号检测，并从导频符号估计时间和频率偏移。
Based on joint time and frequency offset estimation, a reliable signal detection scheme is obtained by modulated pilot symbols using an m-sequence.
基于连续OFDM符号上的导频子载波，给出了联合频率偏移纠正和信道估计方法。
In this paper, the pilot subcarriers on two consecutive OFDM symbols are utilized for joint frequency offset correction and channel estimation.
本发明涉及在正交频分复用（OFDM）接收机中补偿载波频率偏移的方法和系统。
The invention relates to a method and a system for compensating a carrier frequency offset in an orthogonal frequency division multiplexing (OFDM) receiver.
电力系统运行的基本任务是维持系统频率为计划值，且保证频率偏移不超过允许值。
The basic task of power system operation is to maintain frequency to its scheduled value and guarantee frequency error is in a limited range.
多普勒不仅造成宽带水声通信信号的载波频率偏移，而且引起码元符号的展宽或压缩。
Doppler effect causes not only carrier frequency offset, but also symbol expansion or compression for wideband acoustic communication signal.
如何在系统频率偏移时准确的得到基波及各次谐波的幅值和相角就成为一个重要问题。
So how to calculate amplitude and phase of the fundamental and harmonics accurately when the system frequency has an offset is an important issue.
梯形小波函数具有平坦的频率特性，因而梯形小波变换较容易捕捉到信号的频率偏移。
By comparison with other wavelet functions, trapezoid complex wavelet function has even frequency characteristic, and so trapezoid complex wavelet transform easily catch frequency deviation.
正交频分复用(OFDM)通信系统对频率偏移比较敏感，容易导致系统性能急剧下降。
OFDM (Orthogonal frequency Division Multiplexing) systems are sensitive to frequency offset, which will degenerate the system performance.
但是OFDM技术对频率偏移和相位噪声很敏感，所以同步是OFDM系统中的关键问题。
But OFDM is very sensitive to frequency offset and phase noise, so synchronization is the key problem for OFDM system.
通过对不同的工况下同一噪声传递路径的测量分析，发现了传递函数的峰值存在频率偏移。
Meanwhile, in different working condition, the measuring of the same noise transfer path gives results that have minor offset of peak values positions between each test.
但OFDM技术对定时和频率偏移敏感，如何克服这个缺点是OFDM技术研究的主要方向之一。
However, OFDM is sensitive to timing and frequency offset, so how to overcome this limitation is one of the main directions of the research on OFDM.
本文通过理论分析揭示并探讨了滤波网络扫频测量时幅频特性的频率偏移和动态带宽现象的成因。
With the methods of theoretical analysis, this paper reveals and researches the result of frequency offset and dynamic bandwidth of a filter network in its amplitude-frequency characteristic.
本文通过理论分析揭示并探讨了滤波网络扫频测量时幅频特性的频率偏移和动态带宽现象的成因。
With the methods of theoretical analysis, this paper reveals and researches the result of frequency offset and dynamic bandwidth of a filter network in its amplitude-frequency characteristic.
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