QPSK+QAM.rar_64 QAM 调制解调_64_QAM调制_QPSK+QAM+星座图_QPSK复数_QPSK映射

function [complex_qam_data]=QAM64(bitdata) %modulation of 64QAM,modulate bitdata to 64QAM complex signal X1=reshape(bitdata,6,length(bitdata)/6)'; d=1;%min distance of symble for i=1:length(bitdata)/6; for j=1:6 X1(i,j)=X1(i,j)*(2^(6-j)); end source(i,1)=1+sum(X1(i,:)); %convert to the number 1 to 16 end mapping=[-7*d 7*d;-5*d 7*d;-3*d 7*d;-d 7*d;d 7*d;3*d 7*d;5*d 7*d;7*d 7*d; -7*d 5*d;-5*d 5*d;-3*d 5*d;-d 5*d;d 5*d;3*d 5*d;5*d 5*d;7*d 5*d; -7*d 3*d;-5*d 3*d;-3*d 3*d;-d 3*d;d 3*d;3*d 3*d;5*d 3*d;7*d 3*d; -7*d d;-5*d d;-3*d d;-d d;d d;3*d d;5*d d;7*d d; -7*d -d;-5*d -d;-3*d -d;-d -d;d -d;3*d -d;5*d -d;7*d -d; -7*d -3*d;-5*d -3*d;-3*d -3*d;-d -3*d;d -3*d;3*d -3*d;5*d -3*d;7*d -3*d; -7*d -5*d;-5*d -5*d;-3*d -5*d;-d -5*d;d -5*d;3*d -5*d;5*d -5*d;7*d -5*d; -7*d -7*d;-5*d -7*d;-3*d -7*d;-d -7*d;d -7*d;3*d -7*d;5*d -7*d;7*d -7*d]; for i=1:length(bitdata)/6 qam_data(i,:)=mapping(source(i),:);%data mapping end complex_qam_data=complex(qam_data(:,1),qam_data(:,2));