Hi all,
I have build a simulation system to test my Error Correcting Code.
And now I add modulation/demodulation module.

When I apply BPSK and QPSK to system, I found their BER versus SNR
curve almost identical, is it right in theory?

My code rate is 0.9, code length >10000.

BTW, I found BPSK and QPSK have identical uncoded BER versus SNR curve,
is above similar?

Any suggestions will be appreciated!

Best regards,
Davy