Patent ID: 8098781
Filing Date: 2012-01-17
Classification: H04L

Abstract:
1. A communications system for receiving a modulated signal that carries encoded communications data, comprising: an adaptive filter having a plurality of non-adaptive and adaptive filter taps with weighted coefficients and input and output normalizing circuits that obtain sample values from a received signal input to the adaptive filter or output by adaptive filter to increase gain recovery based on type of modulation used by the communication system, based on one of the states of the demodulator such as preamble search, preamble detected, and data state and/or other signal acquisition information; an automatic tap order selection circuit connected to the adaptive filter taps and configured to select a number and order of adaptive filter taps based on filter performance and modulation; a demodulator for demodulating the received signal; and a decoder that receives the filtered output signal from the demodulator and decodes the signal to obtain the communications data.