2D_FDTD_scattering

this matlab codes for using in communication systems this codes very important in communication systems.

WSNs consists of hundreds or thousands of low cost nodes

lorenz吸引子的画法，及其动态movie的画法。(Lorenz attractor painting method, and its dynamic movie of the painting.)

用逼近法计算变形的第二类整数阶贝赛尔函数值(Used approximation method to calculate the deformation of the second type of integer-order Bessel function values)

DATA REGION is about matlab and OFDM

lena图像的小波分解与增强，图形对比更清晰，自己写的(lena image wavelet decomposition and enhanced graphic correlation more clearly, to write their own)

it s used for beamforming adaptively

说明：  根据语音信号的特点给出有关滤波器的性能指标：1）低通滤波器性能指标，fp=1000Hz，fc=1200 Hz， As=100dB，Ap=1dB；2）高通滤波器性能指标，fc=2800 Hz，fp=3000 Hz As=100dB，Ap=1dB；3）带通滤波器性能指标，fp1=1200 Hz，fp2=3000 Hz，fc1=1000 Hz，fc2=3200 Hz，As=100dB，Ap=1dB。用IIR对其分析，最后，利用MATLAB中的函数freqz画出各滤波器的频率响应。(This article according to the IIR filter and the FIR filter characteristic, uses the bilinearity method of transformation under the MATLAB bad boundary to design IIR and to design the FIR numeral filter separately with the window box number, and carries on the analysis to the gathering pronunciation signal, and finally gives IIR and FIR to the pronunciation filter effect.)

congestion management project

本文利用数学软件MATLAB对Lorenz系统等六个重要的混沌模型进行数值计算，同时模拟出各类混沌系统的独特性质，如混沌吸引子，倍周期，初值敏感性，相图，分岔图等。通过观察和分析上述特性，加深了我们对混沌现象的理解。(In this paper, the mathematical software MATLAB is used to numerically calculate six important chaotic models such as Lorenz system, and simultaneously simulate the unique properties of various chaotic systems, such as chaotic attractors, period of time, initial value sensitivity, phase diagram, bifurcation diagram, etc. . By observing and analyzing the above characteristics, we have deepened our understanding of chaotic phenomena.)