Adaptive channel allocation method for OFDM wireless networks based on temporal difference
In order to reduce channel interference and improve channel resource utilization in OFDM wireless networks,an adaptive channel allocation method for OFDM wireless networks based on temporal difference is proposed.The channel conflict is identified by time difference differentiation of time series data observed in OFDM wireless network channels.The channel allocation target model of OFDM wireless network is constructed to achieve the minimum network conflict value,and the network subcarrier and power transmission requirements,network node traffic and the fairness of channel allocation are taken as constraints.In the process of solving channel allocation target model by Differential Evolution(DE)algorithm,adaptive scaling factor is introduced.The variation and crossover processes in DE algorithm are optimized based on sequential difference algorithm to obtain a high quality channel adaptive allocation scheme for OFDM wireless networks.Experiments show that the maximum response speed of this method is less than 330 ms,which can effectively control the conflict between links,reduce the interference between channels,and improve the communication quality of channel nodes.
NETL
NSTL
万方数据
