bpsk demodulation method

[franticEB]

Hi, i want to realize a bpsk demodulator for a receiver tha is not coherent with the transmitter, so the phase of the receiver's local oscillator could be unknown.

I read about costas loop but i don't understand how to realize/simulate it. I understand that i have to multiply the input by SINE and COSINE and filter out high frequencies components. At this point i have to multiply the output of LPF. I don't know how to design the loop filter and NCO after that.

Could you explain me better that kind of demodulator?

Is there another way to demodulate BPSK signal?

 

[FvM]

Here's a simulation setup for a Costa's loop detector