OFDM

利用二维小波分析对图像进行压缩。一个图像作小波分解后，可得到一系列不同分辨率的子图像，不同分辨率的子图像对应的频率是不相同的。(failed to translate)

说明：  tsp的算法讲解和实现，适合学生应用，也适合需要者参考(tsp explanation and implementation algorithms, suitable for students to use, but also for those who need information)

General Embedded Quantization for Wavelet-Based Lossy Image Coding

频谱分析，用于对等时间间距的序列进行频谱分析(spectrum analysis, for the time interval, such as the sequence spectrum analysis)

The firefly algorithm (FA) is a metaheuristic algorithm, inspired by the flashing behaviour of fireflies. The primary purpose for a firefly s flash is to act as a signal system to attract other fireflies. Xin-She Yang formulated this firefly algorithm by assuming:[1] All fireflies are unisexual, so that one firefly will be attracted to all other fireflies Attractiveness is proportional to their brightness, and for any two fireflies, the less bright one will be attracted by (and thus move to) the brighter one however, the brightness can decrease as their distance increases If there are no fireflies brighter than a given firefly, it will move randomly. The brightness should be associated with the objective function. Firefly algorithm is a nature-inspired metaheuristic optimization algorithm.

OFDM信号在无线通信中会受到多普勒频移的影响，从而影响了OFDM信号的正交性，引起载波间的干扰和OFDM信号符号间的干扰，本代码先形成含有N个二进制码元的信号，而这个信号的前半部分和后半部分的信号是一样的，然后根据把这个信号调制成OFDM信号，最后接收端根据这个OFDM信号估计出多普勒因子(OFDM signal in a wireless communication will be subject to Doppler shift of influence, thus affecting the OFDM signal orthogonality, causing interference and interference between the OFDM signal symbol between carriers, the code first formed comprising N binary symbols signal, and the first and second halves of this signal is the same signal, and then the OFDM signal according to the estimated Doppler factor modulates the signal to the OFDM signal received, the last side)

matlab里面的一些简化工具包，便携易带，ncm工具包，还有一些教学演示程序(the matlab toolbox simple!please,if you want to show something,you can use it)

采集的加速度信号积分为速度信号和位移信号，好用的程序( Realize the change from acceleration signalto displacement signal or speed signal, Integration program easy to use)

I forgot the name of codes

说明：  基于MATLAB的多类型电动汽车充电负荷仿真模型(electric vehicle charging load simulation based on MATLAB )