Joint optimization of subchannel selection and spectrum sensing time for multiband cognitive radio networks

This paper addresses the problem of joint optimization of subchannel selection and spectrum sensing time for multiband cognitive radio networks. In particular, we construct a multiband spectrum sensing framework, and derive the probabilities of detection and false alarm taking the different subchannel gain into account. Furthermore, we formulate the multiband sensing as a two-parameter optimization problem and develop a semi--analytical optimization scheme to achieve the optimal solution.