forte-descente-pas-fixe11

Low pass filter . Using hamming window and and FIR filtering

说明：  认知无线电技术的提出是为提高频谱利用率，而认知无线实现的关键技术是频谱感知，众所周知协作检测提高了衰落环境中认知用户系统检测的性能，该文章是基于协作检测提出新的检测方案，利用了双门限方法提高了系统性能，兼顾带宽有限和增强性能两个方面，是基于门限检测的协作检测性能优化的前提。对以后门限优化协作检测非常有用。(In this paper, we employ a double threshold method in energy detector to perform spectrum sensing, while a fusion center in the cognitive radio network collects the local decisions and observational values of the secondary users, and then makes the final decision to determine whether the primary user is absence or not. Simulation results will show that the spectrum sensing performance channels is improved significantly under the proposed scheme as opposed to the conventional method.)

说明：  方阵进行信号方向检测的程序,不同阵源位置 (direction of arrival in quare array)

带通采样定理的验证以及在无线电全数字中频直扩接收机的应用 (Verify bandpass sampling theorem)

SPIHT图像压缩编码的Matlab程序。(SPIHT image compression encoding procedure of Matlab.)

用MATLAB内含的随机数生成器生成所需的随机量，是进行概率模拟编程的参考工具(Included with the MATLAB random number generator to generate the required random quantity is the probability of a reference tool for simulation programming)

激光谐振腔自再现模的计算机模拟，matlab平台，可以实现矩形腔，条性腔的模拟(Laser resonator mode from the reproduction of computer simulation)

KNN Classification Code Matlab

选取试探函数求解双脊波导中截止频率和场分布(Selecting trial function to solve cut-off frequency and field distribution in double ridge waveguide)

说明：  小波分析与matlab实现的配套源程序，可供学习小波分析者使用(Wavelet Analysis and realization of the matching matlab source for learning the use of wavelet analysis)