64qam调制.m

ofdm中几种常用的调制方式的调制和解调程序

function Symbol=QAM64Mod(bit)
% 64QAM调制
% bin=sequence of 0/1bit
% 64QAM:    s5  s4  s3  s2  s1  s0      m1       mQ
%           0   0   0   0   0   0       3A       3A
%           0   0   0   0   0   1       3A       A
%           0   0   0   0   1   1        A       A 
%           0   0   0   0   1   0        A       3A
%           0   0   0   1   0   0       3A       5A   
%           0   0   0   1   0   1       3A       7A   
%           0   0   0   1   1   1        A       7A
%           0   0   0   1   1   0        A       5A
%           0   0   1   1   0   0       5A       5A
%           0   0   1   1   0   1       5A       7A
%           0   0   1   1   1   1       7A       7A
%           0   0   1   1   1   0       7A       5A
%           0   0   1   0   0   0       5A       3A
%           0   0   1   0   0   1       5A       A
%           0   0   1   0   1   1       7A       A
%           0   0   1   0   1   0       7A      3A

%           0   1   0   0   0   0       3A       -3A
%           0   1   0   0   0   1       3A       -A
%           0   1   0   0   1   1        A       -A 
%           0   1   0   0   1   0        A       -3A
%           0   1   0   1   0   0       3A      - 5A   
%           0   1   0   1   0   1       3A       -7A   
%           0   1   0   1   1   1        A       -7A
%           0   1   0   1   1   0        A       -5A
%           0   1   1   1   0   0       5A       -5A
%           0   1   1   1   0   1       5A      - 7A
%           0   1   1   1   1   1       7A      - 7A
%           0   1   1   1   1   0       7A      - 5A
%           0   1   1   0   0   0       5A      - 3A
%           0   1   1   0   0   1       5A      - A
%           0   1   1   0   1   1       7A      - A
%           0   1   1   0   1   0       7A      -3A

%           1   1   0   0   0   0       -3A       -3A
%           1   1   0   0   0   1       -3A       -A
%           1   1   0   0   1   1       -A        -A 
%           1   1   0   0   1   0       -A        -3A
%           1   1   0   1   0   0       -3A      - 5A   
%           1   1   0   1   0   1       -3A       -7A   
%           1   1   0   1   1   1       -A       -7A
%           1   1   0   1   1   0       -A       -5A
%           1   1   1   1   0   0       -5A       -5A
%           1   1   1   1   0   1       -5A      - 7A
%           1   1   1   1   1   1       -7A      - 7A
%           1   1   1   1   1   0       -7A      - 5A
%           1   1   1   0   0   0       -5A      - 3A
%           1   1   1   0   0   1       -5A      - A
%           1   1   1   0   1   1       -7A      - A
%           1   1   1   0   1   0       -7A      -3A

%           1   0   0   0   0   0       -3A       -3A
%           1   0   0   0   0   1       -3A       -A
%           1   0   0   0   1   1       -A        -A 
%           1   0   0   0   1   0       -A        -3A
%           1   0   0   1   0   0       -3A      - 5A   
%           1   0   0   1   0   1       -3A       -7A   
%           1   0   0   1   1   1       -A       -7A
%           1   0   0   1   1   0       -A       -5A
%           1   0   1   1   0   0       -5A       -5A
%           1   0   1   1   0   1       -5A      - 7A
%           1   0   1   1   1   1       -7A      - 7A
%           1   0   1   1   1   0       -7A      - 5A
%           1   0   1   0   0   0       -5A      - 3A
%           1   0   1   0   0   1       -5A      - A
%           1   0   1   0   1   1       -7A      - A
%           1   0   1   0   1   0       -7A      -3A
%  note:A=1/sqrt(42)
%
bitlength=length(bit);
A=1/sqrt(42);
% bit(ii*6)=s5,bit(ii*6-1)=s4,bit(ii*6-2)=s3,bit(ii*6-3)=s2,bit(ii*6-4)=s1,
% bit(ii*6-5)=s0
for ii=1:bitlength/6
    if isequal(bit(ii*6-5:ii*6-2),[0000])
         Symbol(ii)=3*A+3*A*j;
    elseif isequal(bit(ii*6-5:ii*6-2),[0001])
         Symbol(ii)=5*A+3*A*j;
    elseif isequal(bit(ii*6-5:ii*6-2),[0010])
         Symbol(ii)=3*A+5*A*j;
    elseif isequal(bit(ii*6-5:ii*6-2),[0011]) 
         Symbol(ii)=5*A+5*A*j;
    elseif isequal(bit(ii*6-5:ii*6-2),[0100])
         Symbol(ii)=A+3*A*j;
    elseif isequal(bit(ii*6-5:ii*6-2),[0101])
         Symbol(ii)=7*A+3*A*j;
    elseif isequal(bit(ii*6-5:ii*6-2),[0110]) 
         Symbol(ii)=A+5*A*j;     
    elseif isequal(bit(ii*6-5:ii*6-2),[0111])
         Symbol(ii)=7*A+5*A*j;
    elseif isequal(bit(ii*6-5:ii*6-2),[1000])
         Symbol(ii)=3*A+A*j;
    elseif isequal(bit(ii*6-5:ii*6-2),[1001]) 
         Symbol(ii)=5*A+A*j;     
     elseif isequal(bit(ii*6-5:ii*6-2),[1010])
         Symbol(ii)=3*A+7*A*j;
    elseif isequal(bit(ii*6-5:ii*6-2),[1011])
         Symbol(ii)=5*A+7*A*j;
    elseif isequal(bit(ii*6-5:ii*6-2),[1100]) 
         Symbol(ii)=A+A*j;     
    elseif isequal(bit(ii*6-5:ii*6-2),[1101])
         Symbol(ii)=7*A+A*j;
    elseif isequal(bit(ii*6-5:ii*6-2),[1110])
         Symbol(ii)=-A+7*A*j;
    elseif isequal(bit(ii*6-5:ii*6-2),[1111]) 
         Symbol(ii)=7*A+7*A*j;
    end
    if isequal(bit(ii*6-1:ii*6),[01])
         Symbol(ii)=-conj(Symbol(ii));
    elseif isequal(bit(ii*6-1:ii*6),[10])
         Symbol(ii)=conj(Symbol(ii));
    elseif isequal(bit(ii*6-1:ii*6),[11])
         Symbol(ii)=-Symbol(ii);
    end
    %  Symbol
end