论文部分内容阅读
In cognitive radio networks, spec-trum sensing under circumstances of dynam-ically varying noise and lacking prior infor-mation is a key challenge to the conventional spectrum sensing algorithms. Since the nec-essary information is rather difficult to obtain practically, most existing spectrum sensing methods are fettered in applications. Motivat-ed by these, in this paper, a Frequency domain Goodness of Fit Test (FGoF) based spectrum sensing method is proposed. The FGoF makes full use of underlying information in Guard-Bands and the advantages of GoF test works for any distribution. Analytical and simulated results show that the FGoF is a robust spec-trum sensing method in cognitive radio with the inherent advantages of invulnerability to dynamically varying noise.