基于Markov方法的空时频谱空穴的联合感知和接入
发布时间：2018-07-15 09:09
【摘要】：为改善频谱利用效率,把Markov方法引入到和位置相关的机会式频谱接入系统模型中。推导了各个信道状态的稳态概率,研究了各稳态概率随虚报概率的变化规律,在此基础上,根据频谱空穴的感知准确度与主、次用户相对位置的关系,在不同的主用户区域采用不同的约束条件对次级用户的吞吐量进行优化,以充分利用空时频谱空穴。根据以上研究,提出了一种新颖的基于Markov方法的空时频谱空穴的联合感知和接入方案。理论分析和数值计算表明,该方案能有效利用频谱空穴的空时特性,极大地提高频谱利用率。
[Abstract]:In order to improve the spectral efficiency, Markov method is introduced into the opportunistic spectrum access system model. The steady-state probability of each channel state is derived, and the variation of each steady-state probability with false report probability is studied. On this basis, according to the relationship between the sensing accuracy of the spectrum hole and the relative position of the primary and secondary users, The throughput of secondary users is optimized by using different constraints in different primary user areas to make full use of space-time spectral holes. Based on the above research, a novel joint sensing and access scheme for space-time spectral holes based on Markov method is proposed. Theoretical analysis and numerical calculation show that the proposed scheme can effectively utilize the space-time characteristics of spectral holes and greatly improve the spectral efficiency.
【作者单位】： 解放军理工大学通信工程学院;济南军区装备部;中国电子设备系统工程公司研究所;中国兵器工业新技术推广研究所;解放军68241部队;
【基金】：973计划(2009CB320403)资助项目
【分类号】：TN925
本文编号：2123554
[Abstract]:In order to improve the spectral efficiency, Markov method is introduced into the opportunistic spectrum access system model. The steady-state probability of each channel state is derived, and the variation of each steady-state probability with false report probability is studied. On this basis, according to the relationship between the sensing accuracy of the spectrum hole and the relative position of the primary and secondary users, The throughput of secondary users is optimized by using different constraints in different primary user areas to make full use of space-time spectral holes. Based on the above research, a novel joint sensing and access scheme for space-time spectral holes based on Markov method is proposed. Theoretical analysis and numerical calculation show that the proposed scheme can effectively utilize the space-time characteristics of spectral holes and greatly improve the spectral efficiency.
【作者单位】： 解放军理工大学通信工程学院;济南军区装备部;中国电子设备系统工程公司研究所;中国兵器工业新技术推广研究所;解放军68241部队;
【基金】：973计划(2009CB320403)资助项目
【分类号】：TN925
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