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在IEEE802.22标准系统模型下分析了最优合并准则的性能及影响因素.在此基础上提出了用户删除的方法:通过设置门限去除对最终判决影响较小的用户,从而大幅减少了合作感知的反馈信息,有效节省了反馈信道资源.理论分析和仿真结果显示,用户删除通过设置合理的门限可有效控制系统的性能损失,同时降低反馈信道资源需求,为进一步的系统优化打下了基础.
Under the IEEE802.22 standard system model, the performance and influencing factors of the optimal combination criterion are analyzed. Based on this, the method of user deletion is proposed: by setting the threshold, users who have less influence on the final decision are removed, which greatly reduces the cooperative perception , Which effectively saves the feedback channel resources.The theoretical analysis and simulation results show that the user deletion can effectively control the system performance loss by setting a reasonable threshold and reduce the feedback channel resource requirements, laying a foundation for further system optimization.