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基于matlab环境下的自相关函数的周期图功率谱密度-Based on the power spectral density of the autocorrelation function of the periodogram in Matlab environment
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包括AM,DSB,SSB,LSB,FM,AM-FM等，实现后，显示时域波形和功率谱密度-including AM, DSB, SSB, LSB, FM, AM-FM, etc., we can show the time-domain waveform and power spectral density
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针对锁频锁相器( Phase and Frequency Detector, PFD) 应用于低信噪比、大频偏的条件, 通过理论分析和仿真验证阐述了窗口类型对系统频偏捕获速度、范围、噪声门限及相位噪声抖动的影响机理. 推导出等效相位噪声功率谱密度的表达式. 证明了大窗口具有更低的噪声门限和更小的稳态相位抖动, 但捕获速度较慢. 为了提高捕获速度, 对鉴相器输出值取极性运算得到改进的PFD 算法. 新算法不仅能增加鉴相增益提高捕获速度 还可以减少等效噪声功率谱密度降低相位抖动 同时新算法不需要乘法
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用余弦法仿真的瑞利衰落，包括自相关互相关、功率谱密度等等。依据是Chengshan Xiao2003年的文章。-Cosine method for simulation of Rayleigh fading, including the auto-correlation cross-correlation, power spectral density and so on. Based on the the Chengshan Xiao2003 article.
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成型滤波器法仿真平坦衰落信道，功率谱密度为高斯谱-Flat fading channel simulation of the shaping filter method, power spectral density for the Gaussian spectrum
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成型滤波器法仿真平坦衰落信道，功率谱密度为经典谱-Simulation of the shaping filter method flat fading channel, power spectral density for the classical spectrum
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成型滤波器法仿真平频率选择性信道，功率谱密度为高斯普谱-Forming filter method simulation frequency selective channel, the power spectral density spectrum for high-Split
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成型滤波器法仿真频率选择性衰落信道，功率谱密度为经典谱-Shaping filter method simulation of frequency selective fading channel, power spectral density of the classical spectrum
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在MATLAB下实现FSK调制解调调。并画出了每一步的波形和功率谱密度图
-FSK modulation and demodulation tune in MATLAB. And draw the diagram of every step of the waveform and power spectral density
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本程序源码仿真了功率谱密度，供供有关人士下载学习
-The program source code simulation of the power spectral density for the download to learn for the person concerned
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用于脑电分析的各类源码，包括功率谱密度检测，事件相关同同步/去同步分析，脑地形图绘制等，已通过测试。
-For EEG analysis of various types of source, including the power spectral density testing, events associated with synchronization/desynchronization analysis of brain topographic mapping, etc., has
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功率谱密度和加噪声以后的情况，用于通信原理仿真-The situation after the power spectral density processing noise for communication principle simulation
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用于计算待测信号的功率谱密度，方法是通过计算自相关函数的傅立叶变换。-Used to calculate the power spectral density of the test signal, the method by calculating the autocorrelation function of the Fourier transform.
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OFDM系统完整的程序，从而使功率谱密度的分分析过程更加简化和实际,可以直接使用。
-OFDM system complete the program, so that the power spectral density of the sub-analysis process more streamlined and practical, can be used directly.
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Ultra Wide Band (UWB) is a technology for the transmission of data using techniques which cause a spreading of the radio energy over a very wide frequency band, with a very low power spectral density. The low power spectral density limits the interfe
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白噪声序列产生maltab源代码，研究白噪声的功率谱密度-The white noise sequence generated maltab source code, research white noise power spectral density
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用最大似然法求解功率谱密度，现代谱估计方法-use the method of maximum likehood to calculate the power spectral density
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车辆系统动力性半车模型根据运动学方程计算系统响应的功率谱密度和频率响应函数的源程序-Vehicle system dynamic half-car model according to the kinematic equation system response power spectral density and frequency response function of the source
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车辆系统动力性单轮模型，根据运动方程计算车轮位移和车身位移的频率响应函数，以及系统响应输出的功率谱密度-Single wheel vehicle system dynamic model, calculated according to the equation of motion wheel displacement and Body displacement frequency response function, and the system responds with output po
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风力发电机组不同于火电等传统发电机组的最大之处
在于其原动机功率的本质不可控，这是由风速的易变性和不
可控性造成的。风速状况对风力发电系统的性能有着重要的
影响，也使得风速模型成为风力发电系统仿真模型的重要部
分。该文针对风速随机变化的特性，在风速统计特性研究的
基础上，用自回归滑动平均(ARMA)方法建立了具有一定
功率谱密度特性的风速模型。对该模型所模拟的风速序列进
行了分析和验证，并与现有仿真程序中风速模型的结果进行
了对比，结果表明该文提出的ARMA模型能
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