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混合衰落信道下存在反馈时延的多天线中继性能分析 被引量：9

Performance Analysis of Multi-Antenna Relaying with Feedback Delay over Mixed Fading Channels
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摘要 研究了混合Rayleigh-Rician衰落信道下,存在反馈时延的多天线双跳放大转发(AF)中继系统的性能.首先,基于反馈时延波束成形(BF)模型得到混合衰落信道下中继系统的输出等效信噪比(SNR).然后,利用无穷级数展开推导出输出信噪比中断概率(OP)和概率密度函数(PDF)的解析表达式,并进一步得到中继系统遍历容量和平均误符号率(ASER)的理论计算公式.最后,计算机仿真验证了所提出的性能分析方法的正确性,并定量分析了天线数量、反馈时延和信道参数对系统性能的影响. The performance of a multi-antenna two-hop amplify-and-forward （AF） relay system with feedback delay over mixed fading channels is studied, where the source-relay and relay-destination links follow Rayleigh and Rician fading,respectively. Based on the beamforming （BF） model with feedback delay, we first obtain the equivalent output signal-to-noise ratio （SNR） for the AF relaying. With the help of infinite-series representation, we then derive the analytical expressions for the outage probability （OP） and probability density function （PDF） of the output SNR. Furthermore, the theoretical formulas of the Ergodic capacity and average symbol error rates （ASERs） of the system are also developed. Finally, the analytical results are verified through comparison with Monte Carlo simulations, where the effects of antenna number, feedback delay and channel parameters on the system perfor- mance are also investigated.
作者 林敏 安康 欧阳键 李敏 牛英滔
机构地区 解放军理工大学 东南大学移动通信国家重点实验室 解放军理工大学通信工程学院 南京航空航天大学计算机科学与技术学院
出处 《电子学报》 EI CAS CSCD 北大核心 2014年第1期36-41,共6页 Acta Electronica Sinica
基金 国家自然科学基金(No.61271255 No.61102091) 东南大学移动通信国家重点实验室开放研究基金(No.2012D15) 江苏省自然科学基金(No.BK20130168) 江苏省普通高校研究生科研创新计划(No.CXLX11-0202)
关键词 t放大转发中继系统 混合衰落信道 波束成形 性能分析 amplify-and-forward relaying mixed fading channels beamforming performance analysis
分类号 TN92 [电子电信—通信与信息系统]
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共引文献25

同被引文献59

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引证文献9

二级引证文献29

电子学报
2014年 第1期

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