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fft1．用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图
2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选
3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱
4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图-fft1. Using Matlab generated sine wave, rectangular wave, as well as the white noise signal, and displa
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滤波器的设计，信号的抽样，频率变换，信号的幅频，信号的相频等-Filter design, signal sampling, frequency conversion, the signal amplitude and frequency, phase frequency signals, such as
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数字信号处理 信号与系统响应（1） 熟悉连续信号经理想采样前后的频谱变化关系，加深对时域采样定理的理解。
（2） 熟悉时域离散系统的时域特性
（3） 利用卷积方法观察分析系统的时域特性
（4） 掌握序列傅里叶变换的计算机实现方法，利用序列的傅里叶变换对连续信号、离散信号及系统响应进行频域分析。
-Digital Signal Processing Signals and Systems in response to (1) familiar with the continuous
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AD9910说明书。AD9910是一款内置14 bit DAC的直接数字频率合成器（DDS），支持高达1 GSPS的采样速率。AD9910采用高级DDS专利技术，在不牺牲性能的前提下可极大降低功耗。DDS/DAC组合构成数字可编程的高频模拟输出频率合成器，能够在高达400 MHz的频率下生成频率捷变正弦波形。-AD9910 manual. AD9910 is a built-in 14 bit DAC for direct digital frequency synthesizer (DDS),
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Abstract-The mobile radio channel can be simulated as a
complex-valued random process with a time-varying variance.
This paper describes an implementation of that process using
a real-time Digital Signal Processing (DSP) technique. The simulato
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qrs detection
give it a time axis
filter ECG
plot data
resample the signal in the Frequency domain at n times the original sampling frequency
upsample rate
-qrs detection
give it a time axis
filter ECG
plot data
r
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描述了matlab基础功能和基础代码的编写，对信号在时域和频域的特点进行分析，并介绍了几种采样方法-Describe the basic function and matlab code to write, on the characteristics of signal in time domain and frequency domain analysis, and sampling method are introduced
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In order to overcome sensitive defects of components deviations and environment defects in
analog circuit design, a novel four-dimensional hyperchaotic systems is constructed based on Lü system.
Basic nonlinear dynamics characteristics are analyz
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0下载：
In order to overcome sensitive defects of components deviations and environment defects in
analog circuit design, a novel four-dimensional hyperchaotic systems is constructed based on Lü system.
Basic nonlinear dynamics characteristics are analyz
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0下载：
In order to overcome sensitive defects of components deviations and environment defects in
analog circuit design, a novel four-dimensional hyperchaotic systems is constructed based on Lü system.
Basic nonlinear dynamics characteristics are analyz
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In this paper, we firstly construct a wide-band undersampling array, then present a novel frequency and
direction of arrival (DOA) estimation method for a very wide frequency band (2-18GHz). Choosing a set
of appropriate sampling frequencies and
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