| IEEE 802.22环境下的认知无线网络功率控制研究 |
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| 引用本文： | 文凯,洪波.IEEE 802.22环境下的认知无线网络功率控制研究[J].电视技术,2010,34(2). |
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| 作者姓名： | 文凯 洪波 |
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| 作者单位： | 1. 重庆邮电大学重庆信科设计有限公司,重庆,400065
2. 重庆邮电大学通信新技术应用研究所,重庆,400065 |
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| 基金项目： | 重庆市自然科学基金项目(CSTC2007BB2453);;重庆市教委科技研究项目(KJ080516);;重庆邮电大学科研基金项目(A2008-51) |
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| 摘 要： | 在主用户信干噪比(SINR)门限和认知用户总功率的限制条件下,研究了认知无线网络中的功率控制方法。主用户可容忍的干扰随通信环境的改变而不断变化,所以认知用户需根据主用户的信噪比进行严格的功率控制。仿真结果表明,该功率控制方案能最大化认知用户的传输速率和降低认知用户中断概率,同时主用户的QoS得到有效的保证。
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| 关 键 词： | 认知无线电 信干噪比门限 功率控制 中断概率 |
Research on Power Control in Cognitive Radio Networks Based on IEEE 802.22 |
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| WEN Kai,HONG Bob.Research on Power Control in Cognitive Radio Networks Based on IEEE 802.22[J].Tv Engineering,2010,34(2). |
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| Authors: | WEN Kai HONG Bob |
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| Affiliation: | a.Chongqing Information Technology Designing Co.;Ltd.;b.New Communication Technology Application Institute;Chongqing University of Posts and Telecommunications;Chongqing 400065;China |
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| Abstract: | Under the constraints of Signal to Interference-plus Noise Ratio(SINR) and total power,a power control strategy is proposed for cognitive radio networks.Primary user's tolerable interference changes continuously with the status of communication environment.Thus,cognitive user needs to strictly control its transmission according to primary user's signal-to-noise ratio.Simulation results show that the proposed power control strategy can maximize the transmission rate and reduce the outage probability of cogni... |
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| Keywords: | cognitive radio SINR threshold power control outage probability |
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