Assignment-No-2

encryption decryption..matlab source code

教你如何安装matlab的工具箱，简单几步，即能完成。(Teach you how to install matlab toolbox, a few simple steps that can be completed.)

Estimates the power spectral densities (PSDs) using both the ICOMP method and Mallows CL for deciding the diagonal loading.

用布谷鸟算法优化elman，结果发现比没有优化时的精度有所提高。(Elman optimization algorithm with cuckoo, found that the accuracy is not optimized over time has improved.)

This file can be used for generation of LTE PRACH preambles as per zadoff chu sequences

对称Alpha稳定分布arima随机过程的产生与参数化谱估计M算法matlab程序(Symmetrical Alpha stable distributions of appearance and random process arima parametric spectral estimation M matlab algorithm )

随机产生信息码求误码率 信息码长度（帧长64bit） 息码速率为10KHz（100us） 发送带宽20KHz（信息码速率的2倍） 发送信号功率2W 载波频率70MHz 采样频率280MHz（发送数据产生采样率） 20KHz方波 0KHz方波 0KHz方波高低电平采样点数 信息码采样点数 ASK调制的调制度ma=1-2/(2+alpha) 根据2ASK调制度确定alpha值(Random generation of information code for error rate 信息码长度（帧长64bit） Message length (64bit) 息码速率为10KHz（100us） The rate of interest rate is 10KHz (100US) 发送带宽20KHz（信息码速率的2倍） Transmission bandwidth 20KHz (2 times the rate of the information code) 发送信号功率2W Transmit signal power 2W 载波频率70MHz Carrier frequency 70MHz 采样频率280MHz（发送数据产生采样率） Sampling frequency 280MHz (transmit data generated sampling rate) 20KHz方波 20KHz Fang Bo 0KHz方波 0KHz Fang Bo 0KHz方波高低电平采样点数 0KHz square wave height sampling points 信息码采样点数 Information code sampling point ASK调制的调制度ma=1-2/(2+alpha) ASK modulation of the modulation system ma=1-2/ (2+alpha) 根据2ASK调制度确定alpha值 Determine the alpha value according to the 2ASK modulation system )

digital signal processing

说明：  是一篇关于matlab的ofdm文章，很适合学习仿真的人(Is an article on the ofdm matlab article, it is suitable for people learning simulation)

MIMO—OFDM的 MATLAB程序 (MIMO—OFDM MATLAB Program)