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基于三维空间域模型的上行链路信道估计

DOI: 10.3969/j.issn.1006-7043.201404003

Keywords: 三维空间信道模型, 上行链路, 信道估计, 到达角度, 到达时间, 多普勒频移

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Abstract:

为了研究信号在三维空间域信道模型中的统计特性,建立一种三维空间域统计信道模型,此模型适用于移动台(MS)周围散射体不存在情况下的通信环境。先假设发射信号基站(BS)周围的散射体分布服从均匀分布,然后给出了上行链路到达角度(AOA)和到达时间(TOA)概率分布的分析算法。同时,利用多普勒累积函数分布,推导出三维空间域下的多普勒频移(DS)概率分布。理论分析和仿真结果表明,与已有的二维和三维模型对比,本模型的上行链路信道参数估计更加适用于各种移动通信环境,对空间统计信道模型的研究和应用提供了有效的支持与拓展。

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