Hello,
I'd like to calculate the complex dot product with GNU Radio.
Is there a way to do it faster that this? This correlation takes
"ages"...
--- snipp ---
// calculates the inner product <a, b> between complex vectors (dot
// product), optionally shifts vector b first.
gr_complex ofdm_rx_cc::dot_prod(gr_complex* a, gr_complex* b, unsigned
int len, int shift)
{
gr_complex cor;
assert((unsigned int)abs(shift)<len);
if (shift<0) { return conj(dot_prod(b, a, -shift)); }
b=b+shift;
for(unsigned int i=0; i<(len-shift); i++) {
cor+=a[i]*conj(b[i]);
}
return cor;
}
--- snipp --
Jens
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