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/380801/9127766
m untitled.m
%%16PSK的调制与解调,programmed by阿哲
clear all
clc
N = 2*10^3;
M = 16;
K = 4;
Err_bits = 0;
%%16psk modu
Tx_values = rand(1,N)-0.5;
for i=1:length(Tx_values)
if Tx_values(i)>=0
Tx_bi
www.eeworm.com/read/374375/9408410
m ofdm_system.m
% OFDM系统仿真程序,matlab平台，是采用4QAM调制。不过在这里面有个问题就是信道系数只能是由高
% 到低，大家可以试试，改成[0.227 0.46 0.688 0.46 0.227]
echo off;clear all;close all;clc;
fprintf( 'OFDM仿真\n') ;
tic
% ------------------------------
www.eeworm.com/read/360786/10078498
m stbc_mimo_ofdm_test.m
% 16 QAM 调制，采用Hadamard变换 N＝128
%OFDM Channel Estimation Based on Comb Pilot
%IFFT_bin_length: IFFT和FFT的点数
%carrier_count: 子载波个数
%bits_per_symbol: 每符号上的比特数
%symbols_per_carrier: 每桢的OFDM符号数
%Ｘ：欲
www.eeworm.com/read/360785/10078501
m rs_cari.m
% 16 QAM 调制，采用Hadamard变换 N＝128
%OFDM Channel Estimation Based on Comb Pilot
%IFFT_bin_length: IFFT和FFT的点数
%carrier_count: 子载波个数
%bits_per_symbol: 每符号上的比特数
%symbols_per_carrier: 每桢的OFDM符号数
%Ｘ：欲
www.eeworm.com/read/163721/10148219
m float_1664qam24.m
% 表示t2*r4系统,码率= 1;
% 16qam 64qam
clear
clc
snr_min=0;
snr_max=35;
stepsize = 2.5;
%-------------全局参量--------------------------------%
Mod_type = 4; %qam调制有三种情况(2=4qam,4=16qam,6=64
www.eeworm.com/read/163643/10151802
m am.m
Fs=1000
Fc=100
N=1000
n=0:N-2
t=n/Fs
x=sin(pi*20*t)
z=cos(pi*200*t)
subplot(221)
plot(t,x)
xlabel('t(s)')
ylabel('x')
title('调制信号')
axis([0 0.1 -1 1])
subplot(222)
plot(t,z)
xlabel('t(s
www.eeworm.com/read/359177/10162426
m ch5example2prg1.m
% ch5example2prg1.m
SNR_in_dB=-10:2:30;
SNR_in=10.^(SNR_in_dB./10); % 信道信噪比
m_a=0.3; % 调制度
P=0.5+(m_a^2)/4; % 信号功率
for k=1:length(SNR_in)
sigma2=P/SNR_in(k);
www.eeworm.com/read/349384/10831478
asv signal_generator.asv
function signal_noise=signal_generator(mode)
Fc=100;%载波频率
Fd=10;%数字传输频率
Fs=1000;%采样频率
K=1;%The legth of message signal
%2ASK调制信号的产生
if mode==1
amp_2ask=0.8*randint(K*100,1)+0.2;%产生信息信号
a
www.eeworm.com/read/459044/7283890
m ch5example2prg1.m
% ch5example2prg1.m
SNR_in_dB=-10:2:30;
SNR_in=10.^(SNR_in_dB./10); % 信道信噪比
m_a=0.3; % 调制度
P=0.5+(m_a^2)/4; % 信号功率
for k=1:length(SNR_in)
sigma2=P/SNR_in(k);
www.eeworm.com/read/448031/7541353
m detect.m
%测试该调制解调程序detect.m
mod_order='QPSK';
noe=0;
Sub_carrier=64;
num_bits = get_bits_per_symbol(mod_order);
txdata_in=rand(1,Sub_carrier*num_bits)>0.5;
[mod_symbols,table, P] = tx_modulate(txdata_in,