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：随着无线技术的飞速发展，频谱缺乏已经成为一个非常严重的问题．感知无线电技术能有效解 决频谱紧张的现状．介绍了感知无线电概念及其内涵，然后介绍了检测频谱空穴的方法．为提高检测概率、 降低设备复杂度及计算复杂度，将UWB与感知无线电结合，提出了基于能量检测及用户合作（EDAUC）的 协作感知方法．仿真和分析表明：该方法能有效提高检测频谱空穴的概率．(: With the rapid development of wireless technology, the lack of spectrum has become a very serious problem. Cognitive radio technology can effectively solve the spectrum tense situation. Introduced the concept of cognitive radio and its content, and then introduces the method of detection of spectrum holes. To improve the detection probability and reduces the complexity and computational complexity, the combination of UWB and cognitive radio is proposed based on energy detection and user cooperation (EDAUC) the cooperative sensing methods. Simulation and analysis: This method can improve the probability of detection of spectrum holes.)

利用传输矩阵方法，对均匀光栅的反射谱模拟(Uniform grating reflection spectrum simulated using the transfer matrix method)

This document describe matlab computing environment: Engineering, Technical Computing,Files and File Management,Mathematical Functions and Applications,DataAnalysis and other.

说明：  用于信号的分解、降噪和重构，实现故障诊断(Used for signal decomposition, noise reduction and reconstruction to realize fault diagnosis)

CR中基于能量检测的频谱感知matlab程序仿真(CR in the detection of spectrum sensing based on energy simulation program)

该程序计算了接收分集中等增益合并的误码率，并有理论值和仿真值的比较(The program calculates the bit error rate of receive diversity and equal gain combining, and the theoretical values ​ ​ and simulation values)

带电粒子在非匀强磁场中运动时，画出其轨迹图形(Charged particle moving in an inhomogeneous magnetic field when the draw its trajectory graphics)

多目标三维跟踪的matlab程序，十分好用(mutiple matlab 3 dimision)

PROGRAM FOR YOUR USE

设定码元速率、载波频率、采样速率、码元个数等，先仿真bpsk信号，然后对其求循环谱。采用频域平滑的方法。(Set the symbol rate, carrier frequency, sampling rate, number of symbols and so on, first simulate the BPSK signal, and then calculate the cyclic spectrum. The frequency domain smoothing method is adopted.)