代码搜索：二阶调制
找到约 3,082 项符合「二阶调制」的源代码
代码结果 3,082
www.eeworm.com/read/367520/9743824
m psk.m
x=[1 1 1 0 0 0 1 0];
stem(x); %绘制基带信号的波形图
tone=8;
fc=20;fd=10;fs=500;
y=dmod(x,fc,fd,fs,'psk',2,tone);
figure
plot(y) %绘制调制后的波形图
a=fft(x,1024);
f=(0:length(a)-1)*fs/length(a)-fs/2;
figure
www.eeworm.com/read/367520/9743826
m 信噪比为1的源程序.m
x=[1 1 1 0 0 0 1 0];
stem(x); %绘制基带信号的波形图
tone=8;
fc=20;fd=10;fs=500;
y=dmod(x,fc,fd,fs,'psk',2,tone);
figure
plot(y) %绘制调制后的波形图
a=fft(x,1024);
f=(0:length(a)-1)*fs/length(a)-fs/2;
figure
www.eeworm.com/read/367520/9743831
m 采样频率为1000的源程序.m
x=[1 1 1 0 0 0 1 0];
stem(x); %绘制基带信号的波形图
tone=8;
fc=20;fd=10;fs=1000;
y=dmod(x,fc,fd,fs,'psk',2,tone);
figure
plot(y) %绘制调制后的波形图
a=fft(x,1024);
f=(0:length(a)-1)*fs/length(a)-fs/2;
figure
www.eeworm.com/read/367520/9743835
m 信噪比为20的源程序.m
x=[1 1 1 0 0 0 1 0];
stem(x); %绘制基带信号的波形图
tone=8;
fc=20;fd=10;fs=500;
y=dmod(x,fc,fd,fs,'psk',2,tone);
figure
plot(y) %绘制调制后的波形图
a=fft(x,1024);
f=(0:length(a)-1)*fs/length(a)-fs/2;
figure
www.eeworm.com/read/171362/9760471
m 基于子空间盲.m
clear all;
close all;
%生成一个1*64的矩阵
for N=1:100
mod_in=randint(1,64);
%子载波个数16循环前缀个数4
%QPSK调制
mod_out=zeros(1,length(mod_in)/2);
R=reshape(mod_in,2,length(mod_in)/2);
T=R' ;
B2D=b
www.eeworm.com/read/249631/12484261
m f3_23.m
%常数调频信号
fm1=fmconst(256,0.2);
%单边指数窗幅值调制信号
am1=amexpo1s(256,100);
%合成
sig=am1.*fm1;
%显示
%实部
plot(real(sig),'LineWidth',2);
hold on;
%虚部
plot(imag(sig),'ro--','LineWidth',2);
legend('实部','虚
www.eeworm.com/read/248638/12549610
m judge.m
function result=judge(s,fs,fc)
%利用六个参数对输入信号的调制方式进行判决
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%门限值
t_m11=0.325;t_m12=0.195;t_m2=0.306;t_mf1=0.1815;
t_mf2=0.4185;t_mp1=0.395;t_mp2=0.404;
%%%%%%%%%%%
www.eeworm.com/read/248638/12549690
m judge.m
function result=judge(s,fs,fc)
%利用六个参数对输入信号的调制方式进行判决
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%门限值
t_m11=0.325;t_m12=0.195;t_m2=0.306;t_mf1=0.1815;
t_mf2=0.4185;t_mp1=0.395;t_mp2=0.404;
%%%%%%%%%%%
www.eeworm.com/read/200620/15428479
m f3_23.m
%常数调频信号
fm1=fmconst(256,0.2);
%单边指数窗幅值调制信号
am1=amexpo1s(256,100);
%合成
sig=am1.*fm1;
%显示
%实部
plot(real(sig),'LineWidth',2);
hold on;
%虚部
plot(imag(sig),'ro--','LineWidth',2);
legend('实部','虚