代码搜索：MATlab
找到约 10,000 项符合「MATlab」的源代码
代码结果 10,000
www.eeworm.com/read/18028/771060
matlab
function y=LPF(fc); %实现低通的频域形式
global dt df N t f T
Bs=N*df/2; %系统带宽
x1=(Bs-fc/2)*N/(2*Bs);
x2=(Bs+fc/2)*N/(2*Bs);
y=zeros(1,N);
y(x1:x2)=1;
www.eeworm.com/read/18028/771061
matlab
clear all
global dt t f df N T %全局变量
close all
N=2^20;
dt=0.001; %ms
df=1/(N*dt); %KHz
T=N*dt; %截短时间
Bs=N*df/2; %系统带宽
t=linspace(-T/2,T/2,N); %时域横坐标
f=linspace(-Bs,Bs,N)+eps; %频域横坐标
www.eeworm.com/read/18028/771062
matlab
n=1000;
x = randint(n,1); %产生信源.
h = modem.pskmod (4); %产生调制句柄
y = modulate(h,x); %对信号进行调制
g = modem.pskdemod (h) %产生解调句柄
z = demodulate(g,y); %进行解调
www.eeworm.com/read/18028/771063
matlab
function X=T2F(x)
global dt df N t f T
%x为时域的取样值矢量，X为x的傅氏变换，X与x长度相同,并为2的整幂。
H=fft(x);
X=[H(N/2+1:N),H(1:N/2)]*dt;
end
www.eeworm.com/read/18028/771064
matlab
M = 16; %M进制
x = randint(5000,1,M);
y=modulate(modem.qammod(M),x); %调制
ynoisy = awgn(y,15,'measured'); %加噪声
scatterplot(y);
scatterplot(ynoisy);
z=demodulate(modem.qamdemod(M),ynoisy); %解调
www.eeworm.com/read/18028/771065
matlab
function x=F2T(X)
global dt df t f T N
%x为时域的取样值矢量，X为x的傅氏变换，X与x长度相同并为2的整幂
X=[X(N/2+1:N),X(1:N/2)];
x=ifft(X)/dt;
end
www.eeworm.com/read/18028/771066
matlab
numbits = 99; %每次迭代的比特数
numchans = 2; %信号的信道数
nsamp = 16; %每个符号的采样率
num=10;
numerrs = 0; % Number of bit errors seen so far
demod_ini_phase = zeros(1,numchans); % 调制相位
mod_ini_phase = ze
www.eeworm.com/read/18028/771067
matlab
%impinvar_bilinear.m
%chebyshev1模拟原型滤波器
Omegap=0.2*pi;Rp=1; %设计指标
Omegas=0.3*pi;As=16;
[n1,Wn1]=cheb1ord(Omegap,Omegas,Rp,As,'s'); %获得chebyshev1的阶次和截止频率
[B1,A1]=cheby1(n1,0.5,Wn1,'s');
www.eeworm.com/read/18028/771068
matlab
x = rand(100,1); %输入数据
num = rcosine(1,8,'sqrt'); %滤波器的转移函数
y1 = rcosflt(x,1,8,'filter',num); %在发端对数据进行滤波
z1 = rcosflt(y1,1,8,'Fs/filter',num); %对接收数据进行滤波，但不过采样
z=z1(length(num):8:end);
stem(z(1
www.eeworm.com/read/18028/771069
matlab
Fd= 1; %输入信号的采样率
Fs = 8; %输出信号的采样率
Delay = 3; %滤波器的群时延
R = 0.5; %滚降因子
[yf,tf] = rcosine(Fd,Fs,'fir',R,Delay);
plot(yf)
grid
xlabel('Time')
ylabel('Amplitude');
% impz(rrcfilter,1); % 另外一种