| 信道老化时高速移动大规模MIMO上行系统的性能分析 |
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| 引用本文： | 杨丽花,梁彦.信道老化时高速移动大规模MIMO上行系统的性能分析[J].电信科学,2017,33(7). |
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| 作者姓名： | 杨丽花 梁彦 |
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| 作者单位： | 南京邮电大学,江苏南京,210003 |
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| 基金项目： | 国家高技术研究发展计划(“863”计划)基金资助项目，国家自然科学基金资助项目(No.61401232 |
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| 摘 要： | 针对高速移动场景下大规模多输入多输出(MIMO)上行通信系统,推导了时变莱斯衰落信道中信道老化时大规模MIMO上行通信系统的可达和速率表达式,并且分析了信道老化对系统功率缩放准则的影响.理论分析与仿真结果表明,在时变莱斯信道中,每个用户的发送功率按照1/M进行缩放,信道老化仅会引起系统可达和速率的降低,而莱斯因子对系统可达和速率及功率缩放准则均有影响,且信道老化对系统可达和速率的影响较莱斯因子的影响可以忽略不计.
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| 关 键 词： | 高速移动场景 大规模多输入多输出 时变莱斯信道 信道老化 可达和速率 功率缩放准则 |
Performance analysis of massive MIMO uplink with channel aging in high-speed mobile scenario |
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| YANG Lihua,LIANG Yan.Performance analysis of massive MIMO uplink with channel aging in high-speed mobile scenario[J].Telecommunications Science,2017,33(7). |
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| Authors: | YANG Lihua LIANG Yan |
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| Abstract: | Achievable sum rate was investigated for the massive multiple input multiple output (MIMO) uplink system with channel aging in the high-speed mobile scenario,and the effect of both channel aging and the Ricean factor on the power scaling law was characterized.Theoretical analysis and simulation results show that the transmit power of each user is scaled down by 1 / M for the time varying Rican fading channel indicating that the Ricean factor affects the power scaling law and sum rate,and achievable channel aging only leads to a reduction of the sum rate.Moreover,the effect of channel aging on the sum rate can be ignored compared with that of the Ricean factor in the time varying Ricean fading channel. |
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| Keywords: | high-speed mobile scenario massive multiple input multiple output time varying Ricean fading channel channel aging achievable sum rate power scaling law |
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