## Carrier frequency correction using real IQ

Started by 2 years ago6 replieslatest reply 2 years ago203 views

How do i do carrier frequency correction using real IQ?

If I have complex IQ z i can just do:

zn -> zn * exp(i*(phi*n + theta))

where phi is some frequency offset and theta is some phase offset.

But what if z is real and the IQ is interleaved?

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well - if by 'interleaved' you mean z = [real(z0) imag(z0) real(z1) imag(z1) ...] then you need to deinterleave it and do the same:

zout(n) -> (z(2*n) + i*z(2*n+1)) * exp(i*(phi*n + theta))

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sorry it's not interleaved, it's just real. I realize now that was wrong.

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Can you do this without doing a hilbert transform first?

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