Patent ID: 8693596

Claim:
A method of adjusting gain, the method comprising: in a main signal path that includes a Mueller-Muller based timing error detector (MM TED): receiving first soft symbol samples that are sampled from a received signal at a rate of one sample per baud period; processing the first soft symbol samples to generate a main error signal; scaling the main error signal with a scaling factor to generate a scaled main error signal, wherein the scaled main error signal is used for clock recovery; in a secondary signal path that includes a secondary MM TED: receiving second soft symbol samples from the received signal that are sampled at the rate of one sample per baud period, wherein the second soft symbol samples are deliberately offset in time with a known offset from the first symbol samples; processing the second soft symbol samples to generate a secondary error signal; scaling the secondary error signal with the scaling factor to generate a scaled secondary error signal, wherein the scaled secondary error signal is not used for clock recovery; comparing the scaled main error signal and the scaled secondary error signal; and adaptively adjusting the scaling factor based on the comparison between the scaled main error signal and the scaled secondary error signal such that the scaling of the scaled main error signal is adjusted.