The method USES FFT instead of the cyclic frequency scanning.
该方法利用FFT运算代替循环频率遍历搜索。
But all the algorithms' performance will severely degrade when CFE (cyclic frequency error) exists.
但当循环频率存在误差时，上述算法的性能将急剧下降。
The results show that the increase of cyclic frequency would decrease high temperature fatigue lifetime of the alloy and result in different deformation mechanism.
结果表明，循环频率的增加会导致合金高温疲劳寿命的下降及不同的变形机制。
The supports of continuous-time signal's cyclic frequency and cyclic moment spectra are discussed, and the nonaliasing constraints have been established and discussed.
在讨论了连续信号循环频率的支撑区及循环矩支撑区的基础之上，给出了连续信号在时间离散化时不发生混迭的条件；
A presence detection algorithm based on the estimation of cyclic frequency for Phase Shift-Keying (PSK) signals in additive white Gaussian noise (AWGN) is proposed in this paper.
根据信号的循环平稳特性，本文提出一种加性高斯白噪声信道中基于循环频率估计的PS K信号存在性检测算法。
Based on the analytic method of cyclic spectrum density, the paper pointed out that the impact frequency could be extracted effectively with the help of scanning cyclic frequency domain.
通过对循环谱密度分析方法的特性分析，指出应用循环谱密度分析方法可以在循环频率域有效提取出滚动轴承的冲击故障频率。
The high temperature fatigue behaviour and the effect of cyclic frequency on the behaviour of CMSX-3 Nickel:based single crystal superalloy are investigated by MTS machine, metallograph, SEM and TEM.
利用MTS材料试验系统和光学金相、SEM、TEM等分析手段研究了镍基单晶高温合金CMSX—3的高温疲劳行为，重点探讨了循环频率对这种行为的影响。
Cyclic goods - taking is an optimum logistics system network, it features more frequency, small batch and timing.
循环取货方式是一个优化的物流系统网络，其特色是多频次、小批量、定时性。
A symbol timing algorithm for orthogonal frequency division multiplexing (OFDM) systems with the cyclic prefix under wireless channels is proposed.
提出了一种新的无线信道下基于循环前缀的正交频分复用系统符号定时同步算法。
If the length of its cyclic prefix is larger than the delay spread of transmission channel, we can get a simple frequency equalizer to demodulate OFDM signal.
对于传统的OFDM系统来说，如果循环前缀的长度大于信道的时延扩散值，则可以通过简单的频域均衡来解调OF DM信号。
Various existing synchronization algorithm to estimate symbol timing offset and carrier frequency offset can be classified into blind and pilot-aided methods and algorithm based on cyclic prefix.
目前，估计载波频率偏差和符号定时偏差的算法主要有数据辅助的方法和非数据辅助的方法以及基于循环前缀的算法。
Based on the fast cyclic cumulants method, the frequency of LPI signal was estimated accurately.
基于快速循环累积量实现了对LPI雷达信号频率的高精度估计。
Cyclic voltammetry, constant current charge-discharge and frequency response analysis have also been used to systematically investigate the electrochemical properties of those materials.
并采用循环伏安法、恒流充放电和频率响应测试对各种材料的电化学性能进行了较系统的考察。
Specific frequency used by inductively coupled plasma emission spectroscopy, X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, cyclic voltammetry methods.
具体采用了电感耦合高频等离子体发射光谱、X射线衍射、拉曼光谱、X射线光电子能谱、循环伏安测试手段。
The variety of bowknot Angle and dissipative Angle with viscosity coefficient of pore fluid and cyclic loading frequency is consistent with the results of other experiments.
在同一岩石中蝴蝶结张角和耗散角随孔隙液体黏滞系数和加载频率的变化规律与以往其他实验的结果是一致的。
This paper presents two novel iterative equalization schemes for orthogonal frequency-division multiplexing (OFDM) systems when the cyclic prefix (CP) is not sufficient.
本文提出两种新的用于循环前缀(CP)不足时正交频分复用(OFDM)系统的迭代均衡方法。
A new blind frequency offset estimation method based on cyclic prefix and virtual subcarriers in coherent optical orthogonal frequency division multiplexing (CO-OFDM) system is presented.
在相干光正交频分复用系统中，本文提出了一种新型的基于循环前缀和虚载波的盲频偏估计方法。
The superplasticity research was carried out under constant temperature compression deformation for salt-bath cyclic quenched and high frequency hardened T10A steel.
采用盐浴加热循环淬火和高频感应加热淬火对T10A钢进行组织超细化预处理，然后在恒温压缩变形条件下进行超塑性研究。
The 45 steel natural relation of dead load with cyclic load and low frequency and high frequency strain cycling fatigue life are studied.
本文对45号钢在静载荷下与在循环加载下的本构关系进行了探讨，并给出了低周与高周应变循环的疲劳寿命表达式。
Through the comparison of the test results of reinforced masonry and non-reinforced masonry under low frequency cyclic loading, the seismic behavior of the reinforced masonry was studied.
通过组合配筋砖砌体墙片与无筋砖砌体墙片的低周反复加载试验对比，研究了组合配筋砖砌体墙片的抗震性能。
In the light of these characteristics, the paper deduces the cyclic spectrum of UQPSK, and puts forward an algorithm for carrier-frequency capture based on cyclostationarity.
针对这一特性，文中给出了UQPS K信号的循环谱，提出了基于循环平稳特性的载频获取算法。
Cyclic period chat spectrum estimation is used on parameters estimation such as carrier frequency, chip width and amplitude.
参数估计主要对直扩信号的载频、码片时宽和幅度进行了估计。
It analyzes interleaved uplink OFDM signal structure, utilizes its cyclic characteristic to form specified data matrixes, and implements the carrier frequency offset estimation.
首先分析上行链路中交织OFDM的信号结构，利用其周期性质导出特定的数据矩阵，实现频偏估计。
They are used to yield accurate estimation for the hop frequencies and hop rate, which are fast 4th-order cyclic cumulants algorithm, time-frequency backbone curve analysis, and wavelet transform.
利用快速四阶循环累积量算法、时频脊线分析与小波变换相结合的方法，实现了跳频频率和码速率等参数的高精度估计。
The invention relates to a method for detecting idle frequency spectrums by using cyclic spectrum statistic value.
本发明涉及一种利用循环谱统计量进行空闲频谱检测的方法。
Piles are widely used as a foundation for the offshore wind power generation and undergoing a complex combination of loads including the low-frequency cyclic wind loading.
桩基础是近海风力发电中经常采用的基础形式，承受着包括低频风循环荷载在内的复杂荷载组合。
Aiming at time-frequency overlapped two-signals in single-channel, this paper proposed a method to estimate carrier frequency based on second-order cyclic cumulants.
针对单信道中时频重叠双信号的载波频率估计问题，提出一种基于二阶循环累积量的载波频率估计方法。
Based on the experimental researches, the characteristic behavior of slab and wall frame with unbounded prestressing in the slab under low frequency cyclic loading have been studied.
进行了无粘结预应力板墙框架的反复荷载试验，对无粘结预应力板墙框架的工作特性、无粘结预应力筋在水平荷载下的变化规律进行了分析。
Based on the experimental researches, the characteristic behavior of slab and wall frame with unbounded prestressing in the slab under low frequency cyclic loading have been studied.
进行了无粘结预应力板墙框架的反复荷载试验，对无粘结预应力板墙框架的工作特性、无粘结预应力筋在水平荷载下的变化规律进行了分析。
应用推荐