PAM

This M Code simulate the effects of clipping and filtering on PAPR PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated. The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.

Taflove的FDTD书的附带程序中三维FDTD源代码！很有参考价值！(Taflove the FDTD program book with three-dimensional FDTD source code! A good reference!)

medicin image signal

本程序为无线通信中ofdm的一个仿真代码，采用qpsk的调制方式，适合初级学生学习。(This program is a simulation code ofdm wireless communications, using qpsk modulation, suitable for primary students.)

小波支撑向量机预测方法研究，可以参考，是文档形式，欢迎下载。(Correction of wavelet support vector machine sensors, can refer to, is a document form, please download.)

chopper cycloconverter with document

this is a matlab file that can convert the XYZ color space to Lab color space.

C语言与MATLAB接口编程实例,作为C和MATLAB的联合使用，可以使数据处理变得简单易用，可以作为广大C语言程序人员的参考书籍(C language and MATLAB interface programming examples, as the joint use of C and MATLAB, you can make data processing simple to use, the majority of C language program can be used as reference books for staff)

在一段文字中嵌入4bit水印，方法是基于系数类嵌入的，经过打印扫描攻击后能正确提取水印(4bit watermark embedded in a piece of text, the method is based on the coefficient of class embedded, after the print scan attack correctly extract the watermark)

利用PO修正MM-UTD计算机载波导缝隙天线阵的方向图(Use PO correction MM-UTD computer containing waveguide slot array antenna pattern)