work

Cyclostaionary spectrum estimation by FAM method

matlab code for feature extraction

波达方向（Direction Of Arrival）估计，又称为谱估计（spectral estimation）、波达角（Angle Of Arrival）估计。一个信源有很多可能的传播路径和到达角。如果几个发射机同时工作，每个信源在接收机处形成潜在的多径分量。因此，接收天线能估计出这些到达角就显得很重要，目的是破译出哪个发射机在工作以及发射机所处的可能位置。通过测量辐射信号的波达方向（DOA全称Direction Of Arrival）或波达角（AOA）来估测辐射源的位置。理论上这种估计只需要两个接收阵元就可以确定辐射源的位置，但在实际中，由于受到角度分辨率、多径和噪声限制，所需阵元通常要多于两个。DOA定位技术原理是利用接收机处的阵列天线和波达方向（DOA）估计技术来确定一个从接收机到信源的波达方向线，即为方向线（LOB），最后利用多个接收机估计的DOA进行三角测量，方向线的交点就是信源的估计位置。(DOA (Direction Of Arrival) estimation , also known as spectral estimation (spectral estimation), angle of arrival (Angle Of Arrival) estimation. There are many possible sources a propagation path and the angle of arrival . If several transmitters simultaneously, a potential source for each multipath component at the receiver. Therefore, the receiving antenna can estimate the angle of arrival becomes very important, which aims to decipher the location of the transmitter at work as well as possible in which the transmitter . By measuring the radiation signal DOA (DOA stands for Direction Of Arrival) or the angle of arrival (AOA) to estimate the location of the radiation source . Theoretically this estimate requires only two receiving array element can determine the position of the radiation source , but in practice , due to the angular resolution , multipath and noise limits , usually required more than two array elements . DOA positioning technology is the use of an array of antennas at)

基于matlab的cdma系统，扩频通信(The cdma matlab-based systems, spread spectrum communication)

a mathematical framework for the asymptotic analysis of this system in generic noise and interference and also we investigate the performance of cooperative relaying over fading channel for an LTE downlink session

稀布阵列matlab波束形成程序，可画出9阵元稀疏阵列的阵列方向图和阵列布阵示意图，有详细的注释，适合初学者参考(thinned array beamforming)

内容为哈尔滨工业大学MATLAB讲义，为ppt格式，方便大家学习交流。(Contents of Harbin Institute of Technology MATLAB lectures, in order to ppt format, to facilitate them to learn from the exchange.)

function to calculate the specific heat of organic soil, given the fractions of dry soil and water in the soil sample

通过4阶龙格库塔方法求解混沌系统的微分方程(Through four order Runge-Kutta method for solving differential equations of chaotic systems)

Bytecompression detection using run length encoding