energ-or.m

基于能量检测的误码率分析曲线

%---------------------------------
%门限与检测概率的关系
%-----------------------------------
clear all;
snr=0:1:10;  %dB
limit1=9;
limit2=10;
limit3=11;
limit4=12;
m=5;
number1=2;
number2=4;
pd1=marcumq(sqrt(2*snr(:)),sqrt(limit1),5)
pd2=marcumq(sqrt(2*snr(:)),sqrt(limit2),5)
pd3=marcumq(sqrt(2*snr(:)),sqrt(limit3),5)
pd4=marcumq(sqrt(2*snr(:)),sqrt(limit4),5)
%------
%Or rule
%--------
qd11=1-(1-pd1).^number1
qd12=1-(1-pd1).^number2;
% pf=gammainc(m,limit/2)/gamma(m)
%-----------
%and rule
%----------------
%---------------------------
%不同门限下正确检测概率随信噪比变化图
snr=0:1:10;
plot(snr,pd1,'*-b',snr,pd2,'+-c',snr,pd3,'d-r',snr,pd4,'s-m','LineWidth',2);
grid on;
xlabel('SNR/dB');
ylabel('pd');
legend('门限为9','门限为10','门限为11','门限为12');
%-------------
%合作检测OR准则
%-------------
snr=0:1:10;
plot(snr,pd1,'*-b',snr,qd11,'+-c',snr,qd12,'s-m','LineWidth',2);
grid on;
xlabel('SNR/dB');
ylabel('pd-OR');
legend('用户数为1','用户数为2','用户数为4',4);