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CSI完备性对自适应MIMO-OFDM系统性能的影响分析

Analysis of CSI Completeness Effect to MIMO-OFDM System Performance
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摘要 针对MIMO-OFDM系统的自适应算法建立了性能评估模型,推导了非自适应和自适应条件下系统的频谱效率,研究了信道状态信息(CSI)的完备性对2×2 MIMO-OFDM系统性能的影响。理论分析和仿真结果表明MIMO-OFDM系统对信道估计误差和时延有着一定的鲁棒性,但在条件较恶劣时频谱效率还是会受到较大影响,进而提出了不完备CSI情况下的应对策略。 An evaluation model for the adaptive algorithm of MIMO-OFDM system was built.After formulating system efficiency under static and adaptive conditions,the effect of imperfect CSI to the 2×2 MIMO-OFDM system was analyzed.Analytical and numerical results show the effect to the frequency efficiency when the CSI is imperfect,and simulations show that MIMO-OFDM is robust to channel delay to a certain extent.At last,the compensatory policies under imperfect CSI conditions were proposed.
作者 张皓 张文强 伍云
机构地区 解放军理工大学通信工程学院 解放军第
出处 《系统仿真学报》 CAS CSCD 北大核心 2009年第18期5854-5857,共4页 Journal of System Simulation
关键词 自适应 频谱效率 信道状态信息 多输入多输出正交频分复用 adaptive frequency efficiency channel state information（CSI） MIMO-OFDM
分类号 TN92 [电子电信—通信与信息系统]
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参考文献8

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二级参考文献6

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系统仿真学报
2009年 第18期

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