On the Energy Detection of Unknown Signals Over Fading ChannelsAbstract—This letter addresses the problem of energy detection of an unknown signal over a multipath channel. It starts with the no-diversity case, and presents some alternative closed-fo

Abstract—Lack of sufficient and complete training data is one of the most prominent challenges in the problem of facial age estimation. Due to appearance similarity of the faces at close ages, the face images at the neighboring ages may be ut