代码搜索:振荡调制
找到约 3,079 项符合「振荡调制」的源代码
代码结果 3,079
www.eeworm.com/read/490166/6459855
m am.m
%% 准带限信号的AM(双边带)调制
t0=0.15;
ts=0.001;
fc=250;
fs=1/ts;
a=0.85;
df=0.2;
t=[0:ts:t0]; % 时间向量
% 被调信号
m=[ones(1,t0/(3*ts)),-2*ones(1,t0/(3*ts)),zeros(1,t0/(3*ts)+1)];
c=cos(2*pi*fc.*t);
www.eeworm.com/read/482681/6621297
m fsk.m
function y=fsk(fs,f0,pinpian,fm,tn)
t=0:1/8192:(tn*fs-1)/8192;
y=sin(2*pi*t);
fh1=f0+pinpian; %%上边频
fl1=f0-pinpian; %%下边频
fl=2*pi*fl1/fs;
fh=2*pi*fh1/fs;
jj=fs/(2*fm) ; %%半个调制频率周期
www.eeworm.com/read/405631/11459948
m cm_sm32.m
function[pb,ps]=cm_sm32(snr_in_dB)
N=10000;
E=1;
snr=10^(snr_in_dB/10);
sgma=sqrt(E/(2*snr));
s00=[cos(pi/2) sin(pi/2)];%更改此处相位值可以得到不同的调制相位仿真情况,当然后面也需要根改解调
s01=[cos(pi/2) -sin(pi/2)];
for i
www.eeworm.com/read/152609/12099101
m testsource.m
clear;
clc;
x = rand(1,100)>0.5;%产生信号
ovsf = [1,1,-1,-1];%扩品码
%串并转换,一路变两路
xi = x(1:2:length(x))
xq = x(2:2:length(x))
%QPSK调制
I_Symbols = 2*xi-1;
Q_Symbols = 2*xq-1;
%ovsf扩频
muxi = kron(I_Symbols,
www.eeworm.com/read/251378/12349057
txt introduction.txt
编写了ask、qam和psk的经成形后的载波调制(采用升余弦函数)
调用方式:
s_asksk=mod_ask(data,sample,M,fb,fc)
s_mpsk=mod_mpsk(data,sample,M,fb,fc)
s_qam=mod_qam(data,sample,M,fb,fc)
data: 数据源,介于0 到 M-1的整数,其中M
www.eeworm.com/read/230527/14282623
m jb6.m
%cck调制之符号之间相位的变化
M=80;
fb=6.4e+4; %二进制码元频率 ,即相应的四进制码元速率。基带带宽B=1/Tb=3.2e+4;
fc=3.2e+5; %载波频率
Tc=1/fc; %载波周期
Tb=1/fb; %码元速率
fs=1.28e+6; %采样频率
N=10; %1个
www.eeworm.com/read/227861/14408467
m exm062_2.m
%exm062_2.m
clear
t=(0:pi/100:pi)'; %长度为101的时间采样列向量
y1=sin(t)*[1,-1]; %包络线函数值,是(101x2)的矩阵
y2=sin(t).*sin(9*t); %长度为101的调制波列向量
t3=pi*(0:9)/9; %
www.eeworm.com/read/214211/15110218
m pll.m
% 本程序仿真正弦波的跟踪过程
% PLL illustration using MATLAB
% 2002
clear all;
% close all;
% 定义初始相位偏移和输入连续波频率以及采样频率
theta = 60*pi/180;
f=1e3;
fs=100e3;
% 生成未调制连续波的实部和虚部
k=1:1:1000;
delf=f/20;
cpx
www.eeworm.com/read/207780/15262294
m watch_rake.m
close all;
clear all;
A=[1 1 1 1 0 0 0 1 0 0 1 1 0 1 0];%用户A扩频码
B=[1 1 0 0 1 0 0 0 1 1 1 1 0 1 0];
h=[0.6,0.8];%多径信道
A1=2*A-1;%BPSK调制
B1=2*B-1;
errcount=0;
tercount=0;
for m=1:100000
src=
www.eeworm.com/read/11647/232213
h pvgz.h
void pwm_zk(uchar gao)
{//脉宽调制 gao为高电平持续时间最大255,最小1
PCA_PWM0=0;
CCAP0H=(256-gao);
CR=1;
}
void pwm_1() // PWM端固定高电平
{
PCA_PWM0=0;
CCAP0H=0;
}
void pwm_0() //PWM端固定低电平
{
PCA_PW