% 求多個用戶的誤碼率，調用annreceivex
hold on
BER_sum=zeros(1,13);
BER_ave=zeros(1,13);
for m=1:10
   snr_in_db=0:12;
   for i=1:length(snr_in_db)
       BER(i)=JXG(snr_in_db(i))
   end
   BER_sum=BER_sum+BER;
end;
BER_ave=0.1* BER_sum  
plot(snr_in_db,BER_ave,'bd-')