Mathematical-analysis

一个端点检测的程序，用于语音处理，是用matlab编写的，希望相关专业的朋友可以分享(An endpoint detection procedure, used for voice processing, is to use matlab prepared, I hope the relevant professional friends to share)

说明：  归一化后截止频率为0.2的数字低通滤波器，并且能有效滤掉工频干扰，使心电信号有效表达信息。(The normalized digital low-pass filter with a cutoff frequency of 0.2, and can effectively filter out power frequency interference, so that the ECG signal can effectively express information.)

说明：  master of body language

least squares method

Petviashvili method,计算孤子的程序，如非线性薛定谔方程(Petviashvili method)

用matlab所编写的30个小程序，能对刚学习matlab的同学有所帮助(Prepared with 30 small matlab program can just help students learn matlab)

分数阶傅里叶变换的Matlab仿真实现代码(FRFT matlab Fractional Fourier Transform Matlab simulation code)

field of view to swath converter

CPN算法的简单描述及实现，包括M文件和演示PPT，希望对大家有所帮助。(A simple description of the CPN algorithm and implementation, including the M-file and demonstrates the PPT, we want to help.)

The spectrum sensing problem has gained new aspects with cognitive radio and opportunistic spectrum access concepts. It is one of the most challenging issues in cognitive radio systems. In this paper, a survey of spectrum sensing methodologies for cognitive radio is presented. Various aspects of spectrum sensing problem are studied from a cognitive radio perspective and multi-dimensional spectrum sensing concept is introduced. Challenges associated with spectrum sensing are given and enabling spectrum sensing methods are reviewed. The paper explains the cooperative sensing concept and its various forms. External sensing algorithms and other alternative sensing methods are discussed. Furthermore, statistical modeling of network traffic and utilization of these models for prediction of primary user behavior is studied. Finally, sensing features of some current wireless standards are given.