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现代通信系统matlab版（中文）用超星打开(Modern communications systems matlab version (Chinese) open with Chaoxing)

实现时分秒的计数和校正实现时分秒的计数和校正(Realized and correction of minutes and seconds count)

采用口面积分的方法来计算天线方向图，天线设计常用(Orifice area divided by the method to calculate the antenna pattern, antenna design used)

在simulink的环境下的电机功率的研究仿真模型，并有良好的效果(In simulink environment of motor power, a simulation model of research and has a good effect)

Analytic Model for Gain Modulation in EDFAs

说明：  edge detectoin using wavelet transform built in matlab for beguners and comprisions also.....

傅立叶变换能将满足一定条件的某个函数表示成三角函数（正弦和/或余弦函数）或者它们的积分的线性组合。(Fourier transform can meet certain conditions expressed as a function trigonometric (sine and/or cosine functions) or their integral linear combinations.)

QPSK的完整十五例，bi_to_uni.m carrier_mod.m carrier_remod.m despread_spectrum.m dpxs.m......(QPSK full fifteen cases, bi_to_uni.m carrier_mod.m carrier_remod.m despread_spectrum.m dpxs.m. .....)

使用小波技术对图像进行压缩和解压过程，并且通过模拟信道测试计算其PSNR，通过Matlab2009a测试。(Using wavelet methods compress and decompress the image, and testing through analog channels to calculate the PSNR, by Matlab2009a test.)

说明：  生物特征识别技术作为一种身份鉴别手段具有独特的优势。在生物特征识别系统中, 采集数据的预处 理是不可或缺的环节。以人脸识别为例, 介绍了一种在复杂背景的彩色图像中, 基于颜色和知识的生物特征预处理 方法。首先利用颜色信息从图像中分割出类肤色区域, 然后运用人脸几何特征和眼睛的提取定位人脸。仿真实验表 明, 该算法能较为准确地定位彩色图像中的正面或小角度偏转的人脸, 具有较快的运算速度。(Biometrics as an identification tool has a unique advantage. In biometric systems, collect data preprocessing is an indispensable link. To face recognition, for example, presents a complex background in color images based on color and knowledge of the biological characteristics of pretreatment. The first to use color information to separate out the classes from the image color region, and then use face extraction of geometrical features and eye positioning face. Simulation results show that the algorithm can be more accurately locate color images in a positive or small-angle deflection of the face, with a faster computational speed.)