Patent ID: 6266382
Filing Date: 2001-07-24
Classification: H04J,H04L

Abstract:
Apparatus for receiving signals from a source, the signals being subject to corruption by robbed bit signaling, the apparatus having an adaptive component, comprising:a mechanism for identifying at least a first type and a second type of the robbed bit signaling, the robbed bit signaling of the first type being identified based on a first effect thereof on first predetermined signals provided from the source in a first predetermined interval, and the robbed bit signaling of the second type being identified based on a second effect thereof on second predetermined signals provided from the source in a second predetermined interval, each of the first predetermined signals being different from each of the second predetermined signals; anda controller for adjusting the adaptive component based on any robbed bit signaling of the first type and any robbed bit signaling of the second type identified; whereinsaid adaptive component comprising a decision feedback equalizer (DFE) responsive to a plurality of weighting factors and producing DFE coefficients, said weighting factors being adapted according to the equation H(n+1)=H(n)-2.beta.e'(n)S(n); wherein H(n) comprises a plurality of weighing factors, S(n) comprises a modulo partial response parameter, e'(n) comprises an error signal, and .beta. comprises an update step size.