Draw_special_graphics

为了提高通信系统的信息传输速率，人们提出了UWB通信系统，即Ultra-Wideband 通信系统。在UWB系统中，信号的带宽一般都在GHz的量级，这么宽的带宽造成了UWB系统和现有的通信系统频谱的重叠。为了降低对现有通信系统的影响，UWB信号的设计需要满足一定的频谱模板。如果一个信号的频谱基本满足频谱模板的规定（即在绝大部分频段内功率小于规定区间的上限），我们可以认定其为一个UWB信号。(In order to improve communication systems, information transmission rate of UWB communications systems have been proposed, namely, Ultra-Wideband communication systems. In the UWB system, the signal bandwidth will generally be in the order of GHz, caused such a wide bandwidth of UWB system and the existing communications system spectrum overlap. In order to reduce the impact of the existing communication systems, UWB signal design needs to meet certain spectral mask. If a signal spectrum can basically meet the spectral mask (that is, in most of the provisions of band power is less than the maximum range), we can assume it as a UWB signal.)

基于MATLAB的移动通信信道建模与仿真(Mobile communication channel modeling and simulation based on MATLAB)

GREY PREDICTION ALGORITHM implementation in matlab source code

隐马尔可夫链例子 (Examples of Hidden Markov Chain)

爱尔兰仿真程序，自动生成爱尔兰表，主要用于通信网中(Ireland simulation, automatic generation Irish Table, mainly for communication network)

数学建模2013B—第一题答案,自己编写，不狗血，带原题文件(Mathematical modeling of 2013 b- the first answers, write your own, not the dog blood, with the original file. )

orbits - plot orbits around Earth in an interactive manner

滤波器矩阵综合程序，本程序可以根据性能要求综合目标滤波器的n+2维耦合矩阵(filter synthesize)

the detection between frames

设计低通数字滤波器，要求在通带内频率低于 时，允许幅度误差在1dB以内，(Design of digital low pass filter, requirements in the passband frequencies below, allow a margin of error of less than 1dB,)