hdb3

A collection of command line tools which illustrate features of the file system. Demonstrates extended attributes, ACL s, and kqueue notification mechanisms.

解决微分方程的matlab程序实现步骤，参考价值高(Matlab program to solve differential equations implementation steps, the reference value is high)

说明：  设计一个2FSK数字调制系统，要求： （1）设计出规定的数字通信系统的结构； （2）根据通信原理，设计出各个模块的参数（例如码速率，滤波器的截止 频率等）； （3）用Matlab或SystemView 实现该数字通信系统； （4）观察仿真并进行波形分析； （5）系统的性能评价。 (Design a digital modulation system 2FSK require: (1) design a digital communication system under the structure (2) According to the communication theory, design parameters of each module (such as code rate, filter cutoff frequency, etc.) (3 ) with Matlab or SystemView realize the digital communication system (4) observing the waveform simulation and analysis (5) system performance evaluation.)

采用RS和1/2码率卷积码的级联码，实现高可靠性数字传输(Using RS and 1/2 rate convolutional code concatenated code, high reliability digital transmission)

This research work is used performence improvement of frequency.It is frequency division multiplexing.

ball beam 球杆系统pid仿真程序，附有gui界面 实现了球杆系统的线性和非线性仿真 供需要做此类大作业的学生参考(pid club ball beam system simulation program with gui interface realize the ball-beam system of linear and nonlinear simulation of supply and demand such a large operation to be done to students)

小孔径光电导天线产生太赫兹波的辐射特性(Produce small aperture photoconductive terahertz antenna radiation characteristics)

说明：  add noise to image and remove it with median, weiner and linear filter

STBC编码的一个MATLAB程序，有详细注解(a matlab code for STBC with detailed notes)

说明：  用cc法进行计算延迟时间和潜入位数的的程序，高效率(Cc method used to calculate delay time and into the median procedure, high efficiency)