rotat

信号与系统实验内容，实验步骤，实验原理等，有助于课程理解(Signals and systems experiment content, experiment steps, experimental principle, contribute to the understanding of curriculum)

波束形成MUSIC，信号在波数域进行MUSIS算法(Beamforming MUSIC, the signal in the wavenumber domain MUSIS algorithm)

本书对无线信道的建模、OFDM以及MIMO的基础理论和实践作了一个综合的介绍，并给出了MIMO-OFDM系统基本的的技术matlab仿真代码，非常值得从事无线通信系统研究仿真人员作为参考。(MIMO-OFDM is a key technology for next-generation cellular communications (3GPP-LTE, Mobile WiMAX, IMT-Advanced) as well as wireless LAN (IEEE 802.11a, IEEE 802.11n), wireless PAN (MB-OFDM), and broadcasting (DAB, DVB, DMB). This book provides a comprehensive introduction to the basic theory and practice of wireless channel modeling, OFDM, and MIMO, with MATLAB programs to simulate the underlying techniques on MIMO-OFDM systems.)

語音信號是基於時間軸上的一維數位信號，在這裏主要是對語音信號進行頻域上的分析。在信號分析中，頻域往往包含了更多的資訊。對於頻域來說，大概有8種波形可以讓我們分析：矩形方波，鋸齒波，梯形波，臨界阻尼指數脈衝波形，三角波，餘旋波，余旋平方波，高斯波。對於各種波形，我們都可以用一種方法來分析，就是傅立葉變換：將時域的波形轉化到頻域來分析。(Voice signal is based on the timeline of one-dimensional digital signal, where mainly the speech signal in frequency domain analysis. In signal analysis, frequency domain often contains more information. For the frequency domain for about 8 allows us to analyze waveforms: rectangular square wave, sawtooth, trapezoidal wave, the critical damping index pulse, triangle wave, I spin wave, I spin square wave, Gaussian. For all waveforms, we can analyze in a way that is Fourier transform: the transformation of time domain waveform into the frequency domain to analyze)

一种等周期的伪叠加Zadoff-Chu序列的 集中式和分布式MIMO同步算法, 并进行了仿真。(method with Zadoff-Chu sequence)

Bairstow s approach is to use Newton s method to adjust the coefficients u and v in the quadratic x2 + ux + v until its roots are also roots of the polynomial being solved. The roots of the quadratic may then be determined, and the polynomial may be divided by the quadratic to eliminate those roots. This process is then iterated until the polynomial becomes quadratic or linear, and all the roots have been determined, bisection and other

很有用的时频分析工具，内附各个函数的说明，方便调用。(Very useful tool for time-frequency analysis, containing a description of each function, easy call.)

code for Quadrilateral plotting (like triplot)

this function is used for reading data from txt file

一种计算EMD（Earth Mover s Distance）优化问题的方法，用matlab实现。含有解释文档(An effective method to solve EMD (Earth Mover s Distance) optimal questions matalb codes, including a introducing word doc.)