Patent ID: 8611293
Filing Date: 2013-12-17
Classification: H04W,Y02D

Abstract:
1. A method for cognitive radio channel searching, the method comprising: determining an energy detection threshold and a number of samples that will find a free channel in a minimum searching time, based on a number of channels K and a channel occupancy probability π searching the K channels with a signaling device using the determined energy detection threshold and the determined number of samples to find a free channel, wherein determining comprises determining the number of samples based on the target misdetection α wherein determining a number of samples includes solving for a minimum number of samples needed to achieve the target acceptable misdetection and false alarm probabilities t where ┌•┘ denotes the smallest integer not less than x, Q(•) is the complementary cumulative distribution function of the standard normal random variable, ξ is the signal-to-noise ratio, and α