Patent ID: 8929936
Filing Date: 2015-01-06
Classification: H04K,H04W,Y02D

Abstract:
1. A method for permitting maximum utilization of a frequency spectrum utilizing a cognitive communication system, comprising the steps of: conducting an autonomous radio scene analysis of a signal space for noninterfering signal transmissions where the signal space may consist of at least one of time, frequency, space and code; and performing the radio scene analysis or spectrum sensing using higher order statistics to detect the presence of signals in the signal space, such that if no signal is detected, then the signal space is determined to be a White space which may be used for signal transmission, whereas if a signal is detected, then the signal space is determined to be a Gray space, wherein the radio scene analysis includes extracting a set of features of the detected signal through feature extraction, calculating a result of the detected signal based on the extracted set of features, and scoring the result and providing the score to a classifier, wherein the classifier is trained based on the score through adaptive learning, wherein the classifier is initially designed based on selection of one of models from a plurality of models and a selection of a subset of features from the set of features, wherein the models comprise a computational classifier, a statistical classifier, and a connectionist classifier.