viterbi_demo

Matlab入门级OFDM仿真，包括每个步骤的波形，星座图，频谱等。(Matlab entry-level OFDM simulation, including each step of the waveform, constellation, spectrum.)

本文介绍了一种基于双耳时间差的短信声源定位方法。(This paper describes an approach based on interaural time difference SMS sound source localization method.)

nakagami PPB filter for denoising

考虑L的三个不同值：L＝256（3个数据段），L＝128(7个数据段)和L=64（15个数据段）。各自的谱估计图如上图所示。可以明显的看到，加窗明显的减小了频谱上的假谱峰，但也更加进一步平滑了谱峰。所以，对于L＝64的情况，在ω＝0.8π的谱线可以很确定的辨认，但是那两个靠近的谱峰不容易区分。对于L＝128的情况，这种情况提供了在分离和检测间最好的均衡。当然，对于在L＝256时的情况，效果是更好的，能够从谱估计图上明显的分辨出三条谱线的存在以及它们幅度关系的强弱。 除了Welch法外，还可以采用对多个周期图求平均的功率谱估计方法的其他方法如Bartlett法等等，在功率谱估计上也能取得较好的结果。(consider three different values : L = 256 (3 data), L = 128 (7 data) and L = 64 (15 data). Their spectral estimation map as shown in Fig. It is clear to see that increase significantly decreasing window of the spectrum of false peaks, but much more to further smooth the peaks. Therefore, L = 64, in the case = 0.8 spectrum can determine the identification, but that the two peaks around is not easy to distinguish. L = 128 for the situation, which provided the separation and detection among the best balanced. Of course, L = 256 in the case, the effect is better, from the spectral estimation map clearly distinguish between the three lines of the existence and their relationship to the rate of strength. In addition to Welch law, but also can be used to map multiple cycle for the average power)

单相全桥逆变器模型 ,simulink仿真，matlab，电力电子基础(Single-phase full-bridge inverter model, simulink simulation, matlab, power electronics-based)

说话人身份识别程序，采用MFCC参数提取，并建立GMM模型来进行识别(Speaker identification procedures, using MFCC extraction, and the establishment of GMM model to identify)

lithumion acid battery used for simulation of inverter

This matlab code generates UWB indoor channel impulse response described in : Cassioli, D. Win, M.Z. Molisch, A.F., "The ultra-wide bandwidth indoor channel: from statistical model to simulations," Selected Areas in Communications, IEEE Journal on , vol.20, no.6, pp. 1247-1257, Aug 2002 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=1021916&isnumber=21989 All parameters of the channel were taken from the reference paper

涉及参数传递如何做: Val der Pol 方程(How to pass parameters involved: Val der Pol equation)

This pdf file contains steps to simulate a traction load in an area with varaiable speed control and traction operation mode and regenerative mode.