Detection of weak fault signal about cyclostationary by Hilbert-Huang transform;
基于希尔伯特-黄变换周期平稳类微弱故障信号检测
A Method based Cyclostationary for Spectrum Sensing
基于周期平稳特性的频谱感知方法
In the previous work, the channel input is assumed to be identically independent distribution (IID) to employ the cyclostationary properties of the channel output.
在证明了内插信号具有周期平稳性的基础上 ,证明了过采样使得信道输出具有周期平稳性 ,并由此在频域上证明了当输入是平稳非独立同分布信源时 ,信道可均衡的一个充分必要条件。
Blind SNR estimation based on cyclostationarity;
基于周期平稳的盲信噪比估计方法
A Blind Uplink OFDMA Synchronization Parameters Estimation Based on Cyclostationarity;
一种基于周期平稳的上行OFDMA系统同步参数盲估计方法
In cooperation communication, the cyclostationarity can be used for signal extraction.
本文针对通信双方是合作方这一特点,利用信号的周期平稳性,提出了一种能够适应于高信噪比、低信干比环境的盲自适应波束形成算法,采用了特征向量识别的方法,较好地解决了CAB、CCAB等方法存在的主特征向量误判的问题。
By precoding the successive orthogonal frequency division multiplexing (OFDM) blocks with unequal sizes, a cyclostationarity is introduced in the received signals, so the channel can be identified blindly.
该系统通过将相邻的 OFDM分组编码成不同的长度 ,可在接收信号序列中引入周期平稳性 ,从而实现信道的盲辨识 。
Some properties of the wavelet transform of trigonometric function, periodic function and nonstationary periodic function have been investigated.
探讨了三角函数、周期函数以及一类非平稳周期函数小波变换的一些性质 ,发现周期函数的小波能谱的峰高和峰宽均正比于信号的周期· 提出了一个新的只利用与信号周期有关的一个尺度小波变换系数的重构公式 ,它可准确地重构三角函数 ,对一般周期函数的重构结果优于其Fourier级数中的任何一项 ,对一类均值和振幅变化的非平稳周期函数的重构结果与信号非常吻
Researches on the cyclostationarity of over-sampled OFDM siganls
过抽样OFDM信号的周期平稳特性分析
Research on the Analysis Method of Cyclostationary Fault Signal of Machinery;
周期平稳类机械故障信号分析方法研究
Researches on the Application of Signal's Cyclostationarity in OFDM Systems;
信号周期平稳特性在OFDM系统中的应用研究
Analysis Method of Rotating Machine s Vibration Signals Based on Cyclostationary Property;
基于周期平稳性的旋转机械振动信号分析方法
Adaptive Interference Suppression Techniques Based on Cyclostationarity in GPS;
基于周期平稳特性的GPS自适应抗干扰技术研究
By technical renovation the pump is able to run smoothly for a long period of time.
通过技术改造，使液氨输送泵能够长周期平稳运行。
The Application of the 2-Order Cyclostationarity of Signals in Wireless Mobile Communication;
信号的二阶周期平稳性在无线移动通信中的应用
The Stablity and Monotonicity of Periodic Orbits of the Planar Hamlitonian System;
平面Hamilton系统周期轨的稳定性及单调性
Invariance Principle for the Functional of Periodogram of a Stationary Time Series;
平稳序列周期图积分泛函的不变原理
Depositon is usually episodic rather than smoothly continuous.
沉积作用通常是周期性的而不是平稳连续的。
Comparative Analysis of Service Level in Supply Chain under Different Replenishment Policies;
不同订货策略下周期服务水平相对稳定性研究
period of cycle of steady motion
稳定运转循环的周期
short-term autostabilizatio
短周期运动的自动稳定
By using the mean values of the periodic coefficients, the approximations of the unstable frequencies are obtained.
用周期性系数的平均值法获得了不稳定频率的近似值。
Analysis of frequency content parameters and non-stationary characteristic of near-fault ground motions
近断层地震动的频谱周期参数和非平稳特征分析
Stability and periodic solutions in a predator-prey system with delays
多时滞食饵-捕食系统平衡点的稳定性和周期解的存在性
Existence and Uniqueness of Equilibrium, Periodic Solution, Almost Periodic Solution and Global Exponential Stability for Neural Networks with Time-varying Delays;
具可变时滞的细胞神经网络的平衡点、周期解、概周期解的存在性和全局指数稳定性
The results showed that instability of operation temperature and increase in space velocity and pressure would cause deterioration of the activity stability, resulting in shorter service cycle.
结果表明，操作温度的不平稳、空速及压力的提高均会造成催化剂活性稳定性变差，运转周期缩短。