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

It is to simulation SNR of UWB.

现有一个信号：x(n)=1+cos(π*n/4)+ cos(2*π*n/3)设计及各种数字滤波器以达下列目的： 低通滤波器，滤除cos(2*π*n/3) 的成分，即想保留的成分为1+cos(π*n/4) 高通滤波器，滤除1+cos(π*n/4) 的成分，即想保留的成分为cos(2*π*n/3) 带通滤波器，滤除1+cos(2*π*n/3) 的成分，即想保留的成分为cos(π*n/4) 带阻滤波器，滤除cos(π*n/4) 的成分，即想保留的成分为1+cos(2*π*n/3) 1. 用MATLAB命令butterord求除滤波器的阶数,用命令butter设计各滤波器；画出滤波器幅度和相频相应 取各滤波器的系统函数H(z)。 (an existing signal : x (n) = a cos (* n/4) cos (2** n/3) design and digital filter to achieve the following objectives : low-pass filter, filter cos (2** n/3) the ingredients that want to retain an element of a cos (* n/4) high-pass filter, a filter cos (* n/4) components, namely to retain the element of cos (2** n/3) band-pass filter , a filter cos (2** n/3) components, namely to retain the element of cos (* n/4) band stop filter, the filter cos (* n/4) components, namely to retain the ingredients for a cos ( 2** n/3) 1. MATLAB order butterord except for the band Filter, using the order of the filter design butter; paint Filter magnitude and phase frequency of the corresponding filter system function H (z).)

说明：  对信号做五点三次平均法平滑处理，已编成函数，一种平滑较快，一种较慢。(Three of the signal with an average of five-point smoothing method has been compiled function, a smooth and rapid, a slower.)

and uD as described in section 4 together with the discrete space. The main . The proposed Matlab program employs th

Hi this is opf to solve th eprogram usefully

输电线路双端不同步故障测距程序，matlab的程序，利用两端数据计算故障距离(Two terminal lines are not synchronized fault location procedure, matlab procedures, the use of both ends of the data to calculate the fault distance)

tsp problem - nearest neighbor algorithm

simulation of 4 ask this simulation need more improvement. I ll refine it later but it has the basic for a 4ask signalling scheme. it ll compare the result with analytical answer and depicts it in a semilog plot.

说明：  麻省理工学院的MATLAB基础学习教程资料(Massachusetts Institute of Technology-based learning MATLAB Tutorial Information)