标题: 具回馈的多用户多天线通道之天线选择及传输方式的设计与分析
Design and Analysis of Antenna Selection Schemes for MIMO Multiple Access Channels with Feedback
作者: 田孝婷
Tien,Hsiao-Ting
陆晓峯
Lu,Hsiao-feng
电信工程研究所
关键字: 天线选择;Antenna Selection Schemes
公开日期: 2013
摘要: 为了加强在多天线输入、多天线输出的多重存取通道下分集与多工增益权衡的效能,我们提出两种天线选择的方法。这两种方法都需要利用通道反馈让传送端获得通道资讯,但仅以极低的通道回馈率。第一种方法是选择单一用户作为传输,第二种方法是利用[3]所提出的快速天线选择演算法,同时选择用户与天线来作为传输。此外,第二种方法需要利用获得的通道资讯来设计分配给不同被选择用户的传输速率来达到最佳的分集与多工增益权衡效能。结果证明我们所提出的两种天线选择方法在绝大部分的多工增益区域,它们的分集增益都会远优于没有使用反馈的多用户多天线通道。模拟的结果更证实在某一特定情况下,第二种方法能在中断机率为10的负六次方下,提供比没有使用反馈的多用户多天线通道还好15.4dB的讯杂比。
In order to improve the DMT performance in MIMO-MAC, we propose two antenna selection schemes. The schemes require a channel feedback, but the feedback rate is extremely low. The first scheme allows only one user for transmission, and the second scheme selects users and antennas at the same time by using a fast antenna selection algorithm proposed by Jiang and Varanasi [3]. Moreover, the second scheme requires an additional design of rate-assignment functions that maximizes the DMT performance. It is shown that the DMT performances achieved by these two schemes are significantly better than MIMO-MAC without channel feedback in most multiplexing gain regimes. The simulation result also confirms that in a certain case the second scheme can provide an astonishing SNR gain of 15.4 dB at outage probability 10^-6 compared to MIMO-MAC without channel feedback.
URI: http://140.113.39.130/cdrfb3/record/nctu/#GT070160231
http://hdl.handle.net/11536/74454
显示于类别:Thesis