Square law BPSK detector in matlab

[molakaluri]

I am writing a matlab lab code for BPSK demodulation using squaring loop. In this detection......
after the modulated signal is squared and filtered..we get the 2fc component signal. But I am not able to remove the 2fc component from the signal.I mean how to built a divide by 2 logic here.please help me and make me out of this big problem !!!!!

[charan langton]

First down-convert your signal to your carrier frequency by multiplying with the negative carrier frequency, then low pass filter it using your symbol rate as the cut off frequency. This should get rid of the 2fc term.

Charan Langton