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[ "王炯滔,男,宁波大学硕士研究生,主要研究方向为认知无线电中的频谱检测、资源分配等。" ]
[ "金明,男,宁波大学通信技术研究所讲师,主要研究方向为认知无线电技术、智能天线技术等。" ]
[ "李有明,男,宁波大学通信技术研究所教授、博士生导师,主要研究方向为无线通信技术中的干扰抑制、动态资源分配、MIMO-OFDM、认知无线电等。" ]
[ "郑静静,女,宁波大学硕士研究生,主要研究方向为智能仪器、智能无线电等。" ]
网络出版日期:2013-08,
纸质出版日期:2013-08-20
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王炯滔, 金明, 李有明, 等. 一种认知无线电系统双门限频谱分配算法[J]. 电信科学, 2013,29(8):127-131.
Jiongtao Wang, Ming Jin, Youming Li, et al. A Double-Threshold Based Spectrum Allocation Algorithm in Cognitive Radio System[J]. Telecommunications science, 2013, 29(8): 127-131.
王炯滔, 金明, 李有明, 等. 一种认知无线电系统双门限频谱分配算法[J]. 电信科学, 2013,29(8):127-131. DOI: 10.3969/j.issn.1000-0801.2013.08.022.
Jiongtao Wang, Ming Jin, Youming Li, et al. A Double-Threshold Based Spectrum Allocation Algorithm in Cognitive Radio System[J]. Telecommunications science, 2013, 29(8): 127-131. DOI: 10.3969/j.issn.1000-0801.2013.08.022.
基于认知无线电系统中Underlay频谱共享模型,提出了一种双门限频谱分配算法。给定两个信噪比门限,当信噪比低于较小的门限时,系统选择认知用户做中继协助授权用户进行数据传输,以授权用户信道容量最大化为优化目标进行频谱分配;当信噪比大于较大的门限时,系统允许认知用户之间进行低功率数据传输,以认知用户接入数量最大化为优化目标进行频谱分配;当信噪比介于两门限之间时,由授权用户单独进行数据传输。理论分析和仿真表明,当授权用户信噪比低于较小门限时,所提方法能提高授权用户的信道容量;当授权用户信噪比大于较大门限时,所提方法可以提高认知用户的接入数量。
Based on the spectrum allocation of Underlay model in cognitive radio systems
a double-threshold based spectrum allocation algorithm was proposed.Two signal-to-noise radio(SNR)thresholds were also given.If SNR is less than the small threshold
aiming to maximize the channel capacity of the primary users
some second users are chosen to cooperate with primary users to communicate data.If SNR is larger than the big threshold
considering to maximize the number of the second users accessing the spectrum
some second users are allowed to use the occupied spectrum with low power.If SNR is between the two thresholds
primary users occupy the spectrum alone.Simulation and numerical results illustrate the reliability of the theoretical analysis.
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