Patent ID: 6240282
Filing Date: 2001-05-29
Classification: H04B,H04L

Abstract:
A receiver for use in a communications system, said receiver comprising:a signal receptor for receiving a communications signal from a communications channel;a feature extraction unit for extracting at least one feature from said communications signal, said at least one feature forming a feature set;a non-linear classifier for classifying said communications signal according to signal type, said non-linear classifier including a polynomial expansion unit for performing a polynomial expansion on said at least one feature to generate an expanded feature set, said non-linear classifier using said expanded feature set to classify said communications signal;a signal processor for processing said communications signal based on signal type determined by said non-linear classifier;said non-linear classifier includes a model memory for storing a plurality of signal classification models, each signal classification model corresponding to a particular signal type in a signal type set;said non-linear classifier includes a combination unit for combining said expanded feature set with each of said plurality of signal classification models to produce at least one combination value set for each of said plurality of signal classification models;said expanded feature set includes at least one expanded feature vector;said signal classification models each include at least one signal classification vector; andsaid combination unit includes means for finding a vector dot product between an expanded feature vector and a signal classification vector.