无线物联网中的频谱感知模型研究(英文)

• 作 者: 温志刚 刘杰
• 机 构: School of Electronic Engineering,Beijing University of Posts and Telecommunications,
• 出 处: 中国通信
• 发表日期: 2011年01期
• 关键词: 频谱感知 scarcity 物联网 experienced instant enough exploit have tremendous economicall

In the last few years, the number of devices operating in wireless Internet of Things (IoT) has experienced tremendous growth. On the other hand, the growth results in spectrum scarcity. Cognitive Radio (CR) systems have been proposed to efficiently exploit the spectra that have been assigned but are underutilized. In this paper, a spectrum sensing model based on Markov chain is proposed to predict the spectrum hole for CR in wireless IoT. Theoretical analysis and simulation results have been evaluated that a Markov model with twostate or fourstate works well enough in wireless IoT whereas a model with more states is not necessary for it is complex.

In the last few years, the number of devices operating in wireless Internet of Things (IoT) has experienced tremendous growth. On the other hand, the growth results in spectrum scarcity. Cognitive Radio (CR) systems have been proposed to efficiently exploit the spectra that this has been assigned but are underutilized. In this paper, a spectrum sensing model based on Markov chain is proposed to predict the spectrum hole for CR in wireless IoT. Theoretical analysis and simulation results have been evaluated that a Markov model with twostate or fourstate works well enough in wireless IoTad a model with more states is not necessary for it is complex.