首页 > 学术百科

16QAM理论误码率与实际误码率MATLAB仿真程序

%%16QAM

%%等效基带调制

clc;

clear all;

close all;%%关闭所有窗口，比如之前画的图

nsymbol = 10000;%%每种信噪比下符号数的发送符号数，10^6个数

errornumber = zeros(1,10);

errorratio = zeros(1,10);

data = randi([0,1],1,4*nsymbol);%%产生1行，4*nsymbol列均匀分布的随机数

data_mod1 = zeros(1,nsymbol);%%各参量初始化

data_mod2 = zeros(1,nsymbol);

data_demod1 = zeros(1,nsymbol);

data_demod2 = zeros(1,nsymbol);

data_demod3 = zeros(1,nsymbol);

data_demod4 = zeros(1,nsymbol);

s_receive1 = zeros(1,nsymbol);

s_receive2 = zeros(1,nsymbol);

for i = 1:nsymbol %%格雷码调制到星座图的映射

if data(4*i-3)==0 && data(4*i-2)==0

data_mod1(i) = 3;

if data(4*i-1)==0 && data(4*i)==0

data_mod2(i) = 3;

elseif data(4*i-1)==0 && data(4*i)==1

data_mod2(i) = 1;

elseif data(4*i-1)==1 && data(4*i)==1

data_mod2(i) = -1;

elseif data(4*i-1)==1 && data(4*i)==0

data_mod2(i) = -3;

end

精神专科

elseif data(4*i-3)==0 && data(4*i-2)==1

data_mod1(i) = 1;

if data(4*i-1)==0 && data(4*i)==0

data_mod2(i) = 3;

elseif data(4*i-1)==0 && data(4*i)==1

data_mod2(i) = 1;

elseif data(4*i-1)==1 && data(4*i)==1

data_mod2(i) = -1;

elseif data(4*i-1)==1 && data(4*i)==0

data_mod2(i) = -3;国家统一法律职业资格考试实施办法

end

elseif data(4*i-3)==1 && data(4*i-2)==1

data_mod1(i) = -1;

if data(4*i-1)==0 && data(4*i)==0

data_mod2(i) = 3;

elseif data(4*i-1)==0 && data(4*i)==1

data_mod2(i) = 1;

elseif data(4*i-1)==1 && data(4*i)==1

关于文学的资料

data_mod2(i) = -1;

elseif data(4*i-1)==1 && data(4*i)==0

data_mod2(i) = -3;

end

elseif data(4*i-3)==1 && data(4*i-2)==0

data_mod1(i) = -3;

if data(4*i-1)==0 && data(4*i)==0

data_mod2(i) = 3;

elseif data(4*i-1)==0 && data(4*i)==1

data_mod2(i) = 1;

elseif data(4*i-1)==1 && data(4*i)==1

坦克巷战 data_mod2(i) = -1;

elseif data(4*i-1)==1 && data(4*i)==0

data_mod2(i) = -3;

end

SNR_dB = 1:10;%%%信噪比dB形式

SNR = 10.^(SNR_dB/10);%%信噪比转化为线性值

for loop= 1:10

sigma = sqrt(5/SNR(loop));

s_receive1 = data_mod1 + sigma * randn(1,length(data_mod1));

s_receive2 = data_mod2 + sigma * randn(1,length(data_mod2));%%??

for k = 1:nsymbol

if s_receive1(k)>2

data_demod1(k) = 0;

data_demod2(k) = 0;

if s_receive2(k)>2

data_demod3(k) = 0;

data_demod4(k) = 0;

elseif s_receive2(k)>0 && s_receive2(k)<2

金属氢

data_demod3(k) = 0;

data_demod4(k) = 1;

elseif s_receive2(k)>-2 && s_receive2(k)<0

data_demod3(k) = 1;

data_demod4(k) = 1;

elseif s_receive2(k)<-2

data_demod3(k) = 1;

data_demod4(k) = 0;

end

elseif s_receive1(k)>0 && s_receive1(k)<2

data_demod1(k) = 0;

data_demod2(k) = 1;

if s_receive2(k)>2

data_demod3(k) = 0;

data_demod4(k) = 0;

elseif s_receive2(k)>0 && s_receive2(k)<2

data_demod3(k) = 0;

data_demod4(k) = 1;

elseif s_receive2(k)>-2 &&s_receive2(k)<0

data_demod3(k) = 1;

data_demod4(k) = 1;

elseif s_receive2(k)<-2

data_demod3(k) = 1;

data_demod4(k) = 0;

end

elseif s_receive1(k)<0 && s_receive1(k)>-2

data_demod1(k) = 1;

data_demod2(k) = 1;

if s_receive2(k)>2

data_demod3(k) = 0;

data_demod4(k) = 0;

边界元法 elseif s_receive2(k)>0 && s_receive2(k)<2

data_demod3(k) = 0;

data_demod4(k) = 1;

elseif s_receive2(k)>-2 && s_receive2(k)<0

data_demod3(k) = 1;

data_demod4(k) = 1;

elseif s_receive2(k)<-2

data_demod3(k) = 1;

data_demod4(k) = 0;

end

elseif s_receive1(k)<-2

data_demod1(k) = 1;

data_demod2(k) = 0;

if s_receive2(k)>2

data_demod3(k) = 0;

本文发布于:2024-09-22 06:47:30，感谢您对本站的认可！

本文链接：https://www.17tex.com/xueshu/294554.html

上一篇：不同方式解调下FSK、PSK、DPSK的误码率比较

下一篇：自由空间量子通信误码率和传输率分析

标签：调制符号资格考试职业统一法律

留言与评论（共有 0 条评论）