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When we decimate the signal, only the sampling rate decreases but the frequency content remains same
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本文首先推导出过采样滤波器组精确重构的条件, 由于此时所需的约束条件数比临界采
样时少, 因而可以设计出频域衰减特性更好的滤波器组-This paper is derived through sampling filters of exact reconstruction of conditions, due to time constraints required for critical extraction ratio
When a small sample, so you
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第3章 离散系统结构 109
3.1 离散系统结构的基本原理 109
3.1.1 离散系统结构的分类 109
3.1.2 离散系统结构的基本组成 109
3.2 IIR系统结构及MATLAB实现 110
3.2.1 直接I型 111
3.2.2 直接II型 111
3.2.3 级联型 113
3.2.4 并联型 118
3.3 FIR系统结构及MATLAB实现 122
3.3.1 直接型 123
3.3.2 级联型 123
3.3.3 线性相位型
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This paper considers frequency-domain receiver design for OQPSK type schemes. Since the IQ Interference can lead to significant performance degradation we propose an FDE Design where there is no i-q interference in the sampling instants for the predo
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This paper considers the design of linear
frequency-domain receivers with oversampling for OQPSK
(Offset Quaternary Phase Shift Keying) signals. Based on
a receiver structure able to eliminate the residual interference
between in-phase (I) an
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This paper considers receiver designs for
SC-FDE schemes (Single-Carrier with Frequency-Domain
Equalization) employing M-ary OQAM signals (Offset
Quadrature Amplitude Modulation). It is shown that the
interference between the in-phase (I) and
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本作品是由前置放大、带阻网络、数字幅频均衡和低频功率放大电路组成的数字幅频均衡功率放大器。总体方案以LM386为核心实现了前置放大功能，对放大后的输入信号通过AIC23B进行A/D采样后，用TMSC5402 DSP对采集来的信号进行处理，实现了数字幅频均衡，最后以2SC3281为核心实现了信号的低频功率放大。-This work by the pre-amplifier, band-stop networking, digital amplitude-frequency balanced and
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根据压缩传感(Compressed Sensing，cs)N论，首次提出了短时电能质量扰动信号的压缩采样方法，该方法突破了奈奎斯特采样频率的限制，实现了低于奈奎斯特采样频率的低速率采样。文中对比分析了CS理论与传统采样理论，研究了cS短时电能质量信号压缩采样的实现方法，包括：测量矩阵的构建、稀疏基的选取和电能质量信号快速贝叶斯匹配追踪重构算法(FBMP)-Compressed sensing ( Compressed Sensing , cs ) N theory , first propose
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采用函数法设计一FIR低通数字滤波器 ，，采样频率,阻带衰减不小于-50dB。-The function design FIR low-pass digital filter, the sampling frequency, stop-band attenuation of not less than-50dB.
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带通采样特点和仿真数字信号处理首先要把模拟信号变换为数字信号, 最常用的方法是采样, 奈奎斯特定律要求采样频率大于等于信号最
高频率的两倍, 对中心频率较高而频带较窄的信号使用奈奎斯特定律, 会造成采样频率很高同时有很多频段空白-Bandpass sampling characteristics and simulation of digital signal processing is first of all necessary for converting an analog sign
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包括信号的采样和恢复过程；采样频率的确定方法.
-Including sampling and recovery process signal method of sampling frequency.
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定位技术是无线传感器网络中关键的基础支撑技术, 目前提出了许多静态网络的节点定位算
法, 移动无线传感器网络的定位研究相对较少. 针对定位节点和参考节点随机运动的网络模型, 提出了
一个基于动态网格划分的蒙特卡罗定位算法. 算法中当接收的参考节点数超过一定阈值时使用最远距
离节点选择模型, 选出部分参考节点参与定位和信息转发, 节约能耗. 接着基于选择的或所有接收的参
考节点构建采样区域, 进行网格划分, 使用网格单元数计算最大采样次数, 在采样区域内采样并使用误
差补偿的运
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通信专业正交下变频详细研究，很实用，理论通俗易懂，学习解调的同学可以好好研读-Sampling and Multirate Techniques for Complex and Bandpass Signals
Complex signals and systems
• Sampling of complex signals
• Frequency translations using mixing and multirate operations
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The goal is to eliminate the noise of ERP signals . This is done by Mtvstgyry signal . This question several recordings of ERP has given us and request that Mtvstgyry noise to delete the record . ERP-1 file sampling frequency of 256 Hz sample of 240
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The main procedure of the experiment was to sample a signal with different sampling frequencies and observe the differences between them. This experiment is important for us because it aims to teach how to use matlab commands to reconstruct a sampled
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For a function that varying with time s(t) be a continuous function to be sampled, and sampling be performed by measuring the value of continuous function every T seconds, which is called sampling interval. This sampled function is given by S(nT),for
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MATLAB软件平台下，利用函数wavread对语音信号进行采样，记住采样频率和采样点数；
2）画出语音信号的时域波形，对采样后的语音进行fft变换，得到信号的频谱特性；对语音信号分别加入正弦噪声和白噪声，画出加噪信号的时域波形和频谱图；
3）根据对加噪语音信号谱分析结果，确定滤除噪声滤波器的技术指标，设计合适的数字滤波器，并画出滤波器的频域响应；
4）用所设计的滤波器对加噪的信号进行滤波，在同一个窗口画出滤波前后信号的时域图和频谱图，对滤波前后的信号进行对比，分析信号变化；
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Calculate the phase at time mTS
Ts the sampling frequency.
Read the value of cos( ) and sin( ) a table.
-Calculate the phase at time mTS
Ts the sampling frequency.
Read the value of cos( ) and sin(
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The following file contains three types of digital communications sampling. Contains ideal sampling, natural sampling and ZOH sampling, operate only for one single frequency signal, can be modified to add multiple signals with a base frequency. Greet
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进行数字信号处理综合设计与分析，包括采样，频域分析，IIR，FIR滤波器设计及输出结果。(Design and analysis of digital signal processing, including sampling, frequency domain analysis, IIR, FIR filter design and output results.)
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