A plurality of time periods corresponding to times at which a predicted transition in a signal is expected to occur are determined. The signal has bi-phase modulation, and the predicted transition corresponds to a transition in the signal from a first state to a second state as part of the bi-phase modulation. A next transition in the signal from the first state to the second state is detected, and it is determined whether the detected next transition occurred during one of the plurality of time periods. In response to determining that the detected next transition occurred during one of the plurality of time periods, a timing of the detected next transition is used to adjust a clock used for recovering channel bits in the signal.