Research On Spectrum Sharing Technology Based On Gale-Shapley Algorithm

Since the introduction of information theory in the 1940s, the rapid development of human communication technology, the continuous improvement of the theory, the full application of new technology to a variety of wireless communication equipment terminal has been explosive growth, and limited spectrum resources and unlimited spectrum Resource demands are increasingly contradictory. And the existing spectrum management or fixed division, many of the spectrum has not been fully utilized, the division of the spectrum of resource utilization is very low. Cognitive radios can be used by some kind of "protocol" or technology to allow unwanted spectrum to be used by the required system and to reduce the impact on existing systems.In this paper, Gale-Shapley algorithm is used to solve the problem of spectrum resource management in cognitive wireless networks, and it is applied to the present satellite system and TD-LTE scene. In this paper,the Gale-Shapley algorithm is used to study the spectrum sharing technology of cognitive wireless network from two aspects: one is the spectrum allocation scheme between the satellite system and the TD-LTE system users. The second is that the satellite system and the TD-LTE system share the spectrum Interference analysis.In this paper, the spectrum sharing model based on Gale-Shapley algorithm is proposed for satellite and TD-LTE systems. Based on the spectrum allocation method, the design of preference for distribution is improved, and the time- And the preference degree algorithm based on time-frequency domain. The simulation results show that the spectrum sharing model based on Gale-Shapley algorithm can improve the performance of users from all aspects, and has obvious improvement in blocking rate and call drop rate. Simulation results show that the algorithm can improve the performance of the cognitive communication satellite system, and the spectrum sharing system between the satellite system and the TD-LTE system can improve the spectral efficiency.