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Description: matlab中用不同的方法计算随机数列的功率普-matlab using different methods of calculating the random numbers out of power
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Author: 片片鱼 |
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Description: 一个高手写的FFT的PPT 需要的来-Written by a master of the FFT needs to PPT
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Size: 158720 |
Author: Juggler |
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Description: FFT快速傅立叶变换的代码，只需要Matlab环境即可运行。需要输入分析数据。-FFT Fast Fourier Transform code, only need to run Matlab environment. Need to enter data.
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Author: she |
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Description: 还在为“基于MATLAB的OFDM系统仿真”的朋友，可以看看我总结的资料！
该代码通过综合了本站中的两个源代码，在MATLAB 7.0下完成OFDM系统的完美仿真：音频数据采集->S/P转换->16QAM映射->IFFT处理->添加CP->P/S->理想/多径信道传送->……（FFT等）->传输结果比较（前后频谱图、可以直接通过听前后的音频文件来辨别系统的好坏-理想信道时音质前后相同）。在此还要感谢那两位站员提供相关的代码，也希望能对其他人有帮助。更希望本站能吸引更多的编程爱好者再创佳绩。-KEYWORD:OFDM MATLAB 7.0 CP IFFT FFT P/S S/P
Also for the " Based on MATLAB simulation of the OFDM system," a friend, you can see my summary of the information! The code through a combination of the two site source code, MATLAB 7.0 at complete perfection OFDM system simulation: Audio Data Acquisition-> S/P conversion-> 16QAM mapping-> IFFT processing-> Add CP-> P/S-> ideal/multi-path channel transmission-> ... ... (FFT, etc.)-> transmission results (before and after the frequency spectrum can be directly before and after listening to audio files to identify the system good or bad- when the ideal channel before and after the same sound quality). This would also like to thank at the two stations to provide the relevant code, also hope to have helped others. I also hope to attract more site programming enthusiasts new heights.
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Author: sunshinepwf |
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Description: OFDM程序，这么安排矩阵的目的是为了构造共轭对称矩阵
共轭对称矩阵的特点是 在ifft/fft的矢量上 N点的矢量
在0，N/2点必须是实数 一般选为0
1至N/2点 与 （N/2）+1至N-1点关于N/2共轭对称- BPSK simulation using a carrier cosine wave with ISI
clc
close all
clear all
figure(1)
n=160
for i=1:n
data(i)= 2*round(rand)-1
end
create modulated BPSK signal
first expand the bit stream
exdata=[]
for i=1:length(data)
for rep=1:5
exdata= [exdata data(i)]
end
end
ts=.1
t=1:ts:80.9
carrier=cos(pi*t)
multiply expanded bitstream by cosine wave with carrier frequency
this is the BPSK that is to be transmitted over the channel
bpsk=carrier.*exdata
bpsk=[bpsk(length(bpsk)-1) bpsk(length(bpsk)) bpsk]
plot(bpsk)
generating the noise
p=rand(1,800)*2*pi
p=rand*2*pi
snr=10
r=sqrt(-1*(1/snr*log(1- rand)))
no = 5*(r.* exp(j*p))
no = (r.* exp(j*p))
value of alpha
al=rand+j*rand
al=1
Spreading channel with the alpha as the variable
for k=5:5:795
for l = 1:5
al=round(rand)+j*round(rand)
rec(k+l)=bpsk(k+l)+al*bpsk(k-5+l)
end
end
rxdata=rec+ no
begin demodulation
first multiply recie
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Size: 6146048 |
Author: 卞敏捷 |
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Description: 一个模拟的心电信号的matlab程序，其中一共包含了一个主程序和6个小程序，小程序分别是q波，s波，u波，p波，t波以及QRS波的模拟，运行的时候直接运行主程序complete.m 文件即可，运行良好，可以出波形-A simulated ECG of the matlab program, which includes a total of six small main program and procedures, the procedures are small q-wave, s-wave, u-wave, p-wave, t-wave and QRS wave simulation, run time complete.m documents directly to the main program to run, run well, can be a waveform
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Size: 2048 |
Author: zhengp |
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Description: From given order of rearrangement constructs the permutation matrix P and computes B = P *A*P-From given order of rearrangement constructs the permutation matrix P and computes B = P*A*P
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Size: 2048 |
Author: Sama |
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Description: ua University, in 2002 publi
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Mailto US | Studio | Copyright Complaints
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Author: wibisono |
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