matlab_tfa

基于能量检测的双门限频谱检测性能仿真研究(Detection based on energy detection performance dual threshold Simulation of the spectrum)

本文主要是JTIDS的传输性能做了仔细的评估，并对其抗干扰做了一一的介绍。(The Joint Tactical Information Distribution System (JTIDS) provides jam-resistant digital communication of data and voice for command and control, relative positioning and identification. Many advanced technologies are adopted in JTIDS, such as frequency hopping, M-ary spread spectrum, error detection and correction.)

选题二、基于matlab简单图像处理系统用中值滤波方法消除噪声(Two topics, based on matlab image processing system with a simple median filter to eliminate noise)

图象压缩代码`基于MATLAB的小波分析的程序(MATLAB-based image compression code `Wavelet analysis procedures)

parallel RLS algorithm

相异性分析 DISSIM分析，程序自己编的，有数据有结果(dissimilarity analysis)

获取图像上的曲线数据，读入一幅图片并选取所需的数据点加以保存处理。用法：使用鼠标左键取点，右键结束取点并保存数据(Get the curve on the image data, read and select a picture to save the data points needed to deal with. Usage: Use the left mouse button to take point, right end of the access point and save the data)

用matlab实现的标准的遗传算法和结合免疫算法,采用主函数调用各个算子来实现遗传算法的操作!(using Matlab to achieve a standard genetic algorithm and combined immune algorithm, The principal function call operator to various genetic algorithm operators!)

北京交通大学许荣涛老师TD-SCDMA课程Case Study仿真程序，关于midamble code和信道仿真。(The midamble code and channel simulation of the course of TD-SCDMA in bjtu,teacher Rongtao Xu.)

说明：  提出了正交频分复用(O FDM ) 系统中一种新的载波频偏估计算法L 载波频偏估计过程可分 为获取和跟踪, 其中, 获取过程和时间同步是同时完成的L新算法可实现的最大载波频偏获取范围 是整个信号带宽的一半L新的跟踪算法是一个最大似然算法, 在加性白噪声高斯信道(AW GN ) 下, 当N (训练序列长度的一半) 等于128 时, 其性能比Schm idl 算法提高约7127 dB 在多经信道下, 当 信噪比不是很高时, 新算法仍具有优势L(new carrier f requency offset est imat ion scheme in o rthogonal f requency division mu lt ip lex ing (O FDM ) system is p ropo sed. The carrier f requency offset est i2 mat ion includes acqu isit ion and t rack ing, and acqu isit ion as w ell as t im ing synch ro2 n izat ion can be perfo rmed simu ltaneou sly w ith h igh accu racy. The max imum acqu i2 sit ion range can be up to one half of overall signal bandw idth. The p ropo sed t rack2 ing est imato r is a max imum 2likelihood est imato r, and in AW GN channel, abou t 7127dB imp rovemen t is ob tained compared to the Schm idl’s algo rithm w hen N = 128 in mu lt ipath channel, the p ropo sed algo rithm wo rk s w ell at moderate SNR.)