The invention discloses an opportunity spectrum
access method based on a
sideband observation information multi-arm tiger
machine model. The method comprises the following steps: firstly, aiming at asecondary user access problem under the conditions that
cognitive network channel information is unknown and channel
perception is imperfect, carrying out detection
perception on N channels, and selecting a channel problem suitable for access to be modeled as MABP-
SI model; sensing all authorized channels by a secondary user, recording a sensing observation result, updating a
probability vector, and recording a channel set which is sensed to be idle; creating a candidate set of spatial
probability vector estimated values, and selecting an estimated value of an idle
probability vector; judgingwhether the
idle channel set is empty or not at the time slot t: if the set is empty, not accessing the secondary user to any channel, and if the set is not empty, selecting k authorized channels withthe maximum coefficient to access; and finally, updating t to t + 1, and circulating. According to the method, the income loss of channel access under the statistical asymptotic condition is reduced,and the method has the
advantage of statistical asymptotic effectiveness.