COOPERATIVE SPECTRUM SENSING APPARATUS AND COOPERATIVE SPECTRUM SENSING METHOD

摘要

Disclosed is a cooperative spectrum sensing (CSS) method. The CSS method includes receiving, by a detector of secondary users, observation vectors which are use state information of a spectrum band allocated to a PU in a cognitive radio (CR) network, generating, by the detector, an analysis result value with respect to each of the observation vectors using GLRT with respect to order statistics of reception samples taking non-Gaussian noise into consideration, transmitting, by the detector, the analysis result value to a fusion center unit; and fusing, by the fusion center unit, the analysis result value to determine whether the spectrum band is used.

主权项

1. A cooperative spectrum sensing (CSS) apparatus comprising:
a receiver of a secondary user configured to include a reception unit to receive observation vectors with respect to a spectrum band allocated to a primary user (PU), and a detection unit to generate an analysis result value with respect to each of the observation vectors using a generalized likelihood ratio test (GLRT) with respect to order statistics of reception samples taking non-Gaussian noise into consideration; and a fusion center unit configured to fuse the analysis result values to determine whether the spectrum band is used.