Multi-band cooperative spectrum sensing optimization method based on artificial bee colony algorithm

Abstract

The invention discloses a multi-band cooperative spectrum sensing optimization method based on an artificial bee colony algorithm. An optimization variable in a multi-band cooperative spectrum sensing optimization problem corresponds to the position of improving food resources in the artificial bee colony algorithm, and the yield rate of each food resource is decided by a fitness function determined by the optimization problem, and number of following bees or leading bees is consistent with that of the solutions; the neighborhood of the food resource corresponding to the leading bees is searched from an initial population generated randomly; if the nectar quality of the searched food resource is better, the position of the new food resource is used to replace that of the former food resource, otherwise the position of the former food resource is not changed; all leading bees return to a dancing area to transmit the information of the nectar quality of the food resource to the following bees after finishing the searching. The method of the invention could fast and effectively search an optimal solution and quicken convergence of the algorithm. The method of the invention has robustness and adaptation, and realizes higher system throughput capacity.

Description

technical field [0001] The invention belongs to the field of radio technology, and in particular relates to an artificial bee colony algorithm-based multi-band cooperative spectrum sensing optimization method. Background technique [0002] With the rapid development of wireless communication technology, the scarcity of spectrum resources has become a bottleneck for upgrading various existing communication systems and inventing new communication systems. Cognitive radio is the best solution to this problem, which can alleviate the shortage of spectrum resources and authorization. The contradiction of low frequency band utilization. As a kind of intelligent radio communication technology, cognitive radio dynamically adjusts its own radio parameters by sensing the external environment, so that the internal state can adapt to the external environment, and make full use of spectrum resources without interfering with the main user on a specific frequency band. Maximize spectrum u...

AI Technical Summary

Problems solved by technology

At present, the cooperative spectrum sensing technology based on genetic algorithm and the cooperative spectrum sensing technology based on particle swarm algorithm are commonly used. Although the cooperative spectrum sensing technology of the group algorithm can search for the optimal solution more effectively, its performance needs to be further improved

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