Precoded multiuser distributed MIMO OFDM systems
Precoded multiuser distributed MIMO OFDM systems
复制标题
预编码多用户分布式 MIMO OFDM 系统
DOI：
10.1109/iswcs.2009.5285263
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
A. Gameiro
中科院分区：
文献类型：
--
作者：
R. Holakouei;Adão Silva;A. Gameiro
本文研究了多径衰落信道下采用正交频分复用（OFDM）技术的多用户分布式MIMO系统。我们的目的是扩展和评估，最近提出的共址预编码方案，在分布式的情况下。假设在传输之前知道CSI，我们可以通过对下行链路采用预编码方案来消除用户之间的干扰。我们评估了封闭形式和迭代方案的基础上块对角化（BD），以提高分布式天线系统的性能。结果表明，迭代格式优于封闭格式。仿真结果表明，所研究的方案可以有效的分布式MIMO OFDM系统。
In this paper, we consider a multiuser distributed MIMO system, under multipath fading channels, with orthogonal frequency division multiplexing (OFDM) technology. The aim is to extend and evaluate, co-located precoding schemes that have been recently proposed, in a distributed scenario. Assuming knowledge of CSI prior to transmission, we can remove the interference among users by employing precoding schemes for the downlink. We assessed closed form and iterative schemes based on block diagonalization (BD) to improve the performance of the distributed antenna system. The results show that the iterative scheme outperforms the closed one. The simulation results show that the studied schemes can be efficient for distributed MIMO OFDM based systems.