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张 阳 赵杭生 赵小龙 (解放军理工大学通信工程学院 南京210007) (南京电讯技术研究所 南京210007) (中国人民解放军61541部队 北京100094)  摘 要 在认知无线电网络中,次级用户在实施频谱预测和频谱感知的过程中,存在频谱预测错误和频谱感 知 错 误, 而这些因素往往会影响整个网络的性能。分析了在电池供电能量有限的认知无线电网络中,存在频谱预测错 误 和 频 谱感知错误的条件下次级用户的能量有效性,设计了频谱预测归一化能量有效性公式,仿真了在频谱预测能 量 消 耗、 频谱预测错误概率、通信强度、信道数量不同时的归一化能量有效性,并与完美条件下的归一化能量有效性做了比较, 仿真结果更符合实际情况,具有较好的理论与工程应用价值。 关键词 认知无线电,频谱预测,能量有效性 中图法分类号 TN929.5 文献标识码 A  Energy-efficient Design under Imperfect Condition Based on Spectrum Prediction ZHANG Yang ZHAO Hang-sheng ZHAO Xiao-long (Institute of Communications Engineering,PLA University of Science and Technology,Nanjing 210007,China) (Nanjing Telecommunication Technology Institute,Nanjing 210007,China) (Unit 61541of PLA,Beijing 100094,China)  Abstract In cognitive radio networks,when the secondary users do spectrum predicting and spectrum sensing,some spectrum prediction mistakes and spectrum sensing mistakes are included.In cognitive radio networks where energy is limited,the secondary users’energy efficience is analyzed under spectrum prediction mistakes and spectrum sensing mistakes in this paper.A normalized spectrum prediction formula is designed.The impacts of spectrum prediction energy,the probability of wrong prediction,traffic intensity and channel number on the energy efficient are also investigated respectively in this paper.The simulation results are compared with perfect cognitive radio networks energy efficience. The simulation results are more conform to actual condition and have great value in theory and engineering application.

基于频谱预测的不完美条件下的能量有效性设计 (Energy-efficient Design under Imperfect Condition Based on Spectrum Prediction).