| 基于马氏链的感知无线电信道状态预测及容量估计 |
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| 引用本文： | 后茂森,谢显中.基于马氏链的感知无线电信道状态预测及容量估计[J].重庆邮电学院学报(自然科学版),2009(6). |
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| 作者姓名： | 后茂森 谢显中 |
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| 作者单位： | 重庆邮电大学个人通信研究所/计算机网络与通信信息产业部重点实验室; |
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| 基金项目： | 国家自然科学基金(60872037); 重庆市自然科学基金(2008BB2411) |
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| 摘 要： | 针对感知无线电(cognitive radio,CR)信道的动态特性,对感知无线电频谱占有模型进行了研究,利用马尔可夫模型对频谱占用情况以及信道状态变化情况进行概率统计和估计,基于估计结果,进行实时预测频谱占用情况和实现信道容量估计,并给出了一个容量估计公式。仿真结果显示信道状态预测及容量估计准确性很高,为基于QoS的感知无线电动态选频提供了很好的参考依据。
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| 关 键 词： | 感知无线电 频谱占有模型 马尔可夫链 信道状态预测 信道容量估计 |
State prediction and capacity estimation of cognitive radio channel based on Markov chain |
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| HOU Mao-sen,XIE Xian-zhong.State prediction and capacity estimation of cognitive radio channel based on Markov chain[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2009(6). |
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| Authors: | HOU Mao-sen XIE Xian-zhong |
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| Institution: | HOU Mao-sen,XIE Xian-zhong(Institute of Personal Communication/MII Key Lab on Computer Network , Communication,Chongqing University of Posts , Telecommunications,Chongqing 400065,P.R.China) |
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| Abstract: | For the dynamic features of cognitive radio channel state,the model of spectrum occupancy has been studied in this paper.The Markov models for the spectrum occupancy and channel state prediction was used in the probability of statistic estimate.Based on the results of the estimation,the real-time spectrum occupancy was predicted and the channel capacity estimation was achieved,and at the same time,a new formula for channel capacity estimation was proposed.The simulation results show that the methods of chan... |
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| Keywords: | cognitive radio spectrum occupancy model Markova chain channel state prediction channel capacity estimation |
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