Patent ID: 7139311
Filing Date: 2006-11-21
Classification: H04L

Abstract:
1. An equaliser apparatus comprising: a channel model filter having a plurality of model filter coefficients and a plurality of state defining taps; and an adaptive algorithm unit configured to adapt at least a first predetermined number of the plurality of model filter coefficients in response to an error signal calculated using an output signal from the channel model filter; wherein, the adaptive algorithm unit operates in accordance with a respective state channel estimation technique that is adapted to reduce a number of states that are allocatable to at least one of the plurality of state-defining taps, thereby reducing an overall number of states definable associated with the plurality of state-defining taps; the number of states is reduced by reducing each digit of an octal number to a number represented by superstates, comprising at least one symbol; and the channel model filter is adapted a number of times corresponding to the reduced overall number of states.