Spectral Efficiency of Distributed Antenna Network Using MIMO Spatial Multiplexing
Spectral Efficiency of Distributed Antenna Network Using MIMO Spatial Multiplexing
复制标题
使用 MIMO 空间复用的分布式天线网络的频谱效率
DOI：
10.1109/vtcfall.2012.6398881
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
F. Adachi
中科院分区：
文献类型：
--
作者：
Shinya Kumagai;Ryusuke Matsukawa;Tatsunori Obara;Tetsuya Yamamoto;F. Adachi
多输入多输出（MIMO）空间复用可以在不增加带宽的情况下提高传输速率。然而，在蜂窝网络（CNs）中，靠近蜂窝边缘的用户的传输速率显著降低，因为接收到的信干扰加噪声功率比（SINR）由于来自邻近蜂窝的强同信道干扰（CCI）的存在而降低。分布式天线网络（DAN）是一种将多个天线空间分布在小区内的网络，由于在整个小区内接收到的信噪比都有所提高，因此适合于MIMO空间复用。本文假设具有循环前缀（CP）插入的块传输，从理论上推导了多小区环境下DAN-MIMO空间复用的下行频谱效率表达式。然后，我们提出了DAN-MIMO空间复用的最优和次优发射功率分配方案。通过蒙特卡罗数值计算方法对频谱效率分布进行了评估，结果表明DAN允许单频复用，并且比CN具有更高的频谱效率。
Multiple-input multiple-output (MIMO) spatial multiplexing is known to increase the transmission rate without bandwidth expansion. However, in cellular networks (CNs), the transmission rate of a user close to the cell edge significantly degrades because the received signal-to-interference plus noise power ratio (SINR) degrades due to the presence of strong co-channel interference (CCI) from neighboring cells. Distributed antenna network (DAN), in which many antennas are spatially distributed over the cell, is suitable for MIMO spatial multiplexing because the received SINR improves over the entire cell. In this paper, assuming block transmission with cyclic prefix (CP) insertion, we theoretically derive an expression for the downlink spectral efficiency of DAN-MIMO spatial multiplexing in a multi-cell environment. Then, we propose the optimal and suboptimal transmit power allocation schemes for DAN-MIMO spatial multiplexing. We evaluate the spectral efficiency distribution by Monte Carlo numerical computation method to show that DAN allows single frequency reuse and achieves higher spectral efficiency compared to CN.
影响因子：
11.2
作者：
Falconer, D;Ariyavisitakul, SL;Eidson, B
通讯作者：
Eidson, B