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用智能天线和功率控制提高感知系统信干噪比 被引量:5

Algorithm Based on Beam-Forming and Power Control to Improve SINR in Cognitive Radio
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摘要 为了减小干扰和降低误码率,达到性能优化。将智能天线和功率控制两种技术相结合,通过智能天线对信号进行波束成形处理,再利用基于博弈论的发送端功率控制。考虑其他用户发送功率等级策略的影响,通过不断迭代功率,实现各个用户发送功率值的改善。比较纯粹使用功率控制的方法,可以使感知系统的信干噪比、吞吐量、发送功率等性能得到更多改善,仿真实验证明了其优越性。 Smart antenna and power control are combined to reduce interference and error rate and to improve the performance of the system.The signal is beam-formed through smart antenna,utilizing game theory to realize power control of the transmiter.Considering the influence of the power level strategy from other users,power iteration is used to improve the transmission power.Compared to only using power control,it can improve the SINR(Signal to Interference Ratio),throughput,sending power etc.and the simulation results show its advantagement.
作者 康钰 谢显中
出处 《吉林大学学报(信息科学版)》 CAS 2010年第4期340-346,共7页 Journal of Jilin University(Information Science Edition)
基金 国家自然科学基金资助项目(60872037) 重庆市自然科学基金资助项目(2008BB2411) 重庆市教委应用基础研究基金资助项目(KJ080508)
关键词 感知无线电 智能天线 信干噪比 功率控制 博弈论 cognitive radio smart antenna signal to interference ratio(SINR) power control game theory
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