Research On Applicability Of Spectrum Assignment Algorithms

With the rapid development of the information technology, wireless communication system becoming more and more complex, also need more efficient spectrum management system。The contradictory between the increasing wireless system user and the limited spectrum resource is becoming obvious,effective spectrum management is the only way of solving this problem. Spectrum assignment algorithm is the core of spectrum management system, especially for congtive radio and wireless congtive net, so it is always the hot point. Because of the complicated nature and condition, the spectrum assignment algorithm is always the bootleneck of both the military and civil spectrum management system.In this dissertation, based on the mathematics models and performance metrics, the models of signal propagation and spectrum assignment are studied. Through analyzing the greedy algorithm,the genetic algorithms ,the simulated anneal algorithm , the taboos search algorithm, the mixed algorithms are created.Based on the typical military spectrum management, a emulator is built, and the genetic algorithms, the simulated anneal algorithm, the taboos search algorithm and the mixed algorithms are studied, and the main performances metrics are compared.In order to efficient evaluation of electromagnetic spectrum assignment in complicated electromangnetic environment of battlefield, the ideal solution and gray correlation analysis solution are used, the evaluation is conducted based on the performances metrics,and Some useful conclusions which can be used to guide the design of military spectrum management system are reached.