Blind multiband spectrum sensing scheme by combining model order selection with clustering analysis

Abstract

This letter presents a robust blind multiband detection (BMD) scheme for cognitive radio (CR). In the proposed scheme, the BMD problem is firstly transformed into a model order selection (MOS) problem, and then an effective clustering method is proposed to determine the subband state. Our scheme is easy to implement and has high computational efficiency. Most importantly, unlike the classical BMD schemes based on the information theoretic criteria, our scheme can be used in both the nonuniform and the uniform noise powers scenarios. Simulation results verify its effectiveness.