Carrier Phase Detector Weighting for Faster Loop Stabilization

The patent applies local quality by introducing a boundary phase parameter that creates different weighting behaviors in different phase regions. Received data symbols near boundary phases (within ±boundary phase of mid-phase) are weighted differently than those in nominal phase regions, with the weighting factor varying continuously based on the phase distance to the boundary. This local differentiation reduces signal variance at critical transition points while maintaining simplicity in nominal regions.

The patent changes the weighting parameter from a fixed linear weight to a dynamic weight that depends on the phase position relative to boundary phases. The weighting factor is modified as a function of the phase difference between the received symbol and the boundary phase, creating a continuous transition region that smooths the feedback signal and reduces variance without significantly increasing computational complexity.

The patent introduces dynamics into the decision process by making the weighting factor variable rather than fixed. The weighting applied to received data symbols changes dynamically based on their phase position relative to boundary phases, creating a smooth transition region that continuously adjusts the contribution of ambiguous symbols. This dynamic adaptation reduces bit errors at decision boundaries while maintaining clear decision logic in nominal regions.

The patent applies beforehand cushioning by pre-defining boundary phase regions where received symbols are naturally down-weighted before they can cause harmful transitions. This cushioning effect prevents the hard transitions and associated bit errors by reducing the influence of symbols in ambiguous phase regions, effectively protecting the decision process from boundary-related errors.