Gardner TED for BPSk is e(r)=y(r-1/2)[y(r)-y(r-1)].that mean the
e(r) is related to y's amplitude and so related to
signal's power. But TED is attend to give a phasic error,which is
in[0,2*pi] and unrelated to signal's power. How
can I get the e(r) in zone [0,2*pi]? What's the normalization method?