计算机科学 ›› 2017, Vol. 44 ›› Issue (Z6): 258-262.doi: 10.11896/j.issn.1002-137X.2017.6A.059
张阳,赵杭生,赵小龙
ZHANG Yang, ZHAO Hang-sheng and ZHAO Xiao-long
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。
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