package_emd

Question 1.2 Sullivan

OFDM正交频分复用的基带系统，采用QPSK数字调制，统计系统的误码率(baseband of OFDM ，modulation by QPSK)

输入交指结构滤波器所要求参数，包括中心频率，相对带宽，带外抑制，球的交指滤波器参数(Input interdigital structure required by the filter parameters, including the center frequency, the relative bandwidth, band rejection ball interdigital filter parameters)

智能天线的核心技术之一是波达方向估计,在无线通信中具有重要作用。MUSIC算法是一种经典的DOA估计算法,但因其计算量大、对于相干及小信噪比信号无法分辨等缺陷,故有较多的改进算法被提出。文中研究了求根MUSIC算法、基于空间平滑技术的MUSIC算法、改进MUSIC算法及修正MUSIC算法。通过仿真分析了角度间隔、信噪比、信号相干对改进MUSIC算法分辨率的影响。以上几种改进MUSIC算法进一步发挥了该算法高分辨率的优势,且有利于其在智能天线方面的应用。(One of the core technology of smart antenna is DOA estimation, which plays an important role in wireless communication. MUSIC algorithm is a classic DOA estimation algorithm, but because of its large amount of computation, the coherent and small signal to noise ratio of the signal can not be resolved and other defects, so there are many improved algorithms are proposed. This paper studies the root MUSIC algorithm based on spatial smoothing technique, the improved MUSIC algorithm, MUSIC algorithm and modified MUSIC algorithm. The influence of angle interval, signal to noise ratio and signal coherence on the resolution of the improved MUSIC algorithm is analyzed by simulation. The above improved MUSIC algorithm to further play the advantage of the high resolution of the algorithm, and it is conducive to the application of the smart antenna.)

last som methods for clustering hope usefull

基于 matlab 平台下的 约束非线性方程的解法的复合形法源程序（）(matlab program compex)

一套科学运算语言 MATLAB 的程序设计有关的函数代码!!!(A set of scientific computing language MATLAB programming code related to the function!!!)

Basic function to locate and measure the positive peaks in a noisy data sets. Detects peaks by looking for downward zero-crossings in the smoothed third derivative that exceed SlopeThreshold and peak amplitudes that exceed AmpThreshold. Determines, position, height, and approximate width of each peak by least-squares curve-fitting the log of top part of the peak with a parabola.

美洲语言的语音识别，是一篇很好的文章，介绍了美洲语言语音识别实现的框架(A framework for recognizing the simultaneous aspects of american sign language)

作业：Nomoto 数学模型 model on MATLAB(homework: Nomoto mathematical model on MATLAB)