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Altera_Forum's avatar
Altera_Forum
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11 years ago

BPSK Demodulation

Hello again, I am still struggling with BPSK demodulation :) OK, now I am trying to implement Costas Loop for carrier synchronization, which involves Inphase and Quadrature Phase paths. Inpha...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

The first part should be:

H(z) = alpha/(1 – (1 - alpha).z-1)

There is also + convention for denum term but is confusing

Your entry is correct:

b = alpha;

a = [1, -(1-alpha)];

check it is LPF:

freqz(b,a);