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An Introduction to Matlab Version 2.3 guide to matlab

清音的对数幅度谱，短时过零率，平均能量，基音周期(Voiceless logarithmic amplitude spectrum, short-term zero crossing rate, average energy, pitch period)

simulation of pwm converter

摘 要: 利用MATLAB平台的SIMULINK功能编写了一套QDPSK通用功能模块库，并在此基础上进行了多项可视化仿真,较 好地显示了数字通信的工作方式和优越性，以及采用SIMULINK进行仿真的良好的演示效果，为QDPSK数字通信系统的研究提 供了一个较好的软件平台。(Abstract: This paper gives a group of module library for digital communication function applying MATLAB’ s SIMULINK function， and offer a group of software to perform the visualizing simulation. The software perfectly shows the advantage and the process of normal digital communication. More over, it provides a software base for further study on QDPSK Digital communication.)

WIMAX_WZ_withencoding:信道估计，相位噪声补偿，频偏估计，编解码都有 WIMAX_WZ_withoutencoding：在上面的工程基础上，去掉编解码部分 WIMAX_WZ_withoutprocessing：在上面的工程基础上，再去掉相位噪声补偿，频偏估计 WIMAX_WZ_withoutprocessing2：在上面的工程基础上，改用新的前导和导频联合信道估计方案,参考文档《基于802_16d标准的OFDM信道估计技术的研究与实现.kdh》 因为白噪声信道仿真只能体现QPSK调制和RS-CC编码的性能，需要仿真SNR可控的SUI信道，来估计信道均衡的性能。 在多普勒频偏fd>100Hz时，联合信道估计性能才比前导估计强，否则前导估计性能更优。对于600MHz中心频率，要求收发机相对运动速度大于180km/h，这种情况出现的概率不大(WIMAX_WZ_withencoding: channel estimation, phase noise compensation, frequency estimation, the codec has WIMAX_WZ_withoutencoding: the project on the basis of the above, remove the codec section WIMAX_WZ_withoutprocessing: the project on the basis of the above, then remove the phase noise compensation, offset estimation WIMAX_WZ_withoutprocessing2: In the project on the basis of the above, use the new leader and pilot joint channel estimation scheme, the document " Standards-based 802_16d OFDM channel estimation and implementation of technology .kdh" because white noise channel simulation only reflects the QPSK modulation and RS-CC coding performance requires simulation SNR controllable SUI channel, to estimate the performance of channel equalization. When Doppler shift fd> 100Hz, joint channel estimation performance was stronger than the leading estimate, otherwise better estimation performance leader. For 600MHz center frequency transceiver requirements relative velocity )

本程序是对IEEE 802.16e物理层和链路层的仿真。 使用matlab的simulink仿真工具，先运行data.m产生仿真数据，再运行WiMAX_Test_4.dll进行仿真。(This program is the physical and link layer simulation of IEEE 802.16e. The simulation uses the simulink tool of MATLAB. First,run data.m to generate data, and then run WiMAX_Test_4.dll.)

Using wavelet transform to calculate the heartbeat rate of ECG

基于交通车辆识别的边缘检测，可以得到车辆的边界从而获得车的数量(Edge detection based on the identification of the transport vehicles can be obtained by the quantity of the boundary of the vehicle thereby obtaining Cart)

窗函数法设计一个数字带通FIR滤波器，进行逐步线性回归，意信号卷积的运算,并且绘制图象。( A window function design FIR digital band-pass filter, Stepwise linear regression, Convolution operation is intended to signal and image rendering.)

Implementation of Marr-Poggio-Grimson stereo pair matching. The demonstration for random dot stereopair is included.