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认知无线电网络中具有中断概率约束的波束成形

Beamforming for Cognitive Radio Networks under Outage Probability Constraints
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摘要 研究了在认知无线电(CR)网络中发送端波束成形的算法设计.为了保证服务质量,建立了以CR用户的中断概率和主用户的中断概率为约束条件,最小化CR网络发送端功率的数学优化问题.仿真结果表明,在发送端已知信道协方差误差分布的情况下,所提算法可有效控制各CR用户的发射功率,提高CR网络性能和降低对授权用户的干扰. 研究了在认知无线电(CR)网络中发送端波束成形的算法设计.为了保证服务质量,建立了以CR用户的中断概率和主用户的中断概率为约束条件,最小化CR网络发送端功率的数学优化问题.仿真结果表明,在发送端已知信道协方差误差分布的情况下,所提算法可有效控制各CR用户的发射功率,提高CR网络性能和降低对授权用户的干扰.
出处 《北京邮电大学学报》 EI CAS CSCD 北大核心 2011年第S1期5-8,共4页 Journal of Beijing University of Posts and Telecommunications
基金 国家自然科学基金项目(60872037) 重庆市自然科学基金项目(2008BB2411) 重庆市教委应用基础研究基金项目(KJ080508)
关键词 认知无线电 波束成形 中断概率 信道不确定 cognitive radio beamforming outage probability channel uncertainties
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参考文献7

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二级参考文献8

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