16QAM 链路仿真

平方根升余弦滤波器 8倍升采样 误码率曲线理论与实际都有

clear;
% %% bpsk理论曲线
% for i=1:1:101
%     snr（i）=（i-1）/10;
%     ber（i）=0.5*erfc（10^（snr（i）/20））;
% end
% figure;
% semilogy（snrber）;
% grid on;
% snr_test=[012345678910];
% practical=[0.07850.05660.03730.02280.01250.00590.00248.05e-41.868e-43.25e-54.1e-6];
% hold on;
% semilogy（snr_testpractical）;

%% 16QAM理论曲线
% ber16=[0.02787132784515030.01696673436876040.009247213741474420.004390336087352110.001754150617892730.0005647061064817440.0001386586888126192.42337854663159e-052.76320800168778e-061.84185551109448e-076.25020082774196e-09];
% snr16=[678910111213141516];   %bertool得出的数据
% ber4=[0.002388290780932810.0007726748153784440.0001909077740759933.36272284196176e-053.87210821552205e-062.61306795357521e-079.00601035062878e-091.33293101753005e-106.81018912878076e-13];
snr_test=[67891011121314];
ber_test=[0.0276050.01670250.00915750.004440.0018455.4875e-41.4275e-42.425e-52.3e-6];
for i=1:1:101
    snr（i）=（i+59）/10;
    Q16（i）=0.75*erfc（2*10^（snr（i）/20-0.5））;     %16QAM
    Q4（i）=0.5*erfc（10^（snr（i）/20））;                 %4QAM
    ser4（i）=1-（1-Q4（i））^2;
    ser16（i）=1-（1-Q16（i））^2;
end
figure;
semilogy（snrser16/4）;
grid on;
hold on;
semilogy（snr_testber_test）;

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     文件        1287  2018-10-24 09:30  ber_theroy.m
     文件         223  2018-10-11 20:06  bpsk.m
     文件         169  2018-10-23 10:38  de_bpsk.m
     文件        1104  2018-10-24 21:32  de_QAM16.m
     文件         479  2018-10-24 20:53  de_QAM_soft.m
     文件        1289  2018-10-23 19:01  digital_communication_bpsk.m
     文件        2211  2018-10-24 21:11  digital_communication_QAM.m
     文件         338  2018-10-23 11:23  panjue.m
     文件        1121  2018-10-23 11:14  QAM16.m