spreading_exmple.m

这是一个TD-SCDMA系统的RAKE接收模型

clear all ;

t1=(2*randint(1,44)-1) - j*(2*randint(1,44)-1);
source1 = t1*WQ(1);
x1 = ovsf(1)' * source1;                 % spreading
s1 = x1.*(scramble'*ones(1,44));               

t2=(2*randint(1,44)-1) - j*(2*randint(1,44)-1);
source2 = t2*WQ(2);
x2 = ovsf(2)' * source2;                 % spreading
s2 = x2.*(scramble'*ones(1,44));               

s = s1 + s2;

y = reshape(s,1,44*16) ;
%y = y + 1/sqrt(2)*( randn(size(y)) + j*randn(size(y)))*5;
r = reshape(y,16,44);

z1 = ones(44, 1)*scramble.*(ones(44, 1)*ovsf(1))*r;
rs1 = reshape(diag(z1)/16,1,44)./WQ(1);


z2 = ones(44, 1)*scramble.*(ones(44, 1)*ovsf(2))*r;
rs2 = reshape(diag(z2)/16,1,44)./WQ(2);

%r0 = r./(scramble'*ones(1,44));
%z = ones(44, 1)*sign(ovsf(m)-1/2)*r0;   % despreading
%rs = reshape(diag(z)/16,1,44)./WQ(m);
sum(xor(real(t1)>0,real(rs1)>0))
sum(xor(imag(t1)>0,imag(rs1)>0))

sum(xor(real(t2)>0,real(rs2)>0))
sum(xor(imag(t2)>0,imag(rs2)>0))