OFDM为正交频分复用，频谱利用率高，抗干扰性强，应用前景广泛，为4G发展的核心技术，本文用matlan对其进行仿真-OFDM orthogonal frequency division multiplexing, high spectrum efficiency, interference is strong, broad application prospects, 4G development of the core technology, matlan its simulation

H.264视频压缩关键技术及其应用前景h.264_Code_Decode-H.264 video compression technology and its application prospects h.264_Code_Decode key

利用K均值进行图像分割，无需利用“苹果为红色”这个先验知识，而只需利用图像本身的特征——前景与背景区别较明显-The use of K-means image segmentation, without the use of " red apple" This a priori knowledge, and simply use the characteristics of the image itself- the more obvious differences betwe

使用均值方法剔除运动前景物体，达到背景建模的效果，此方法前景物体剔除比较干净-The mean value method is used to eliminate the foreground object, which can achieve the effect of background modeling.