An introduction to the multi-user MIMO downlink
An introduction to the multi-user MIMO downlink
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DOI：
10.1109/mcom.2004.1341262
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发表时间：
2004-10-01
影响因子：
11.2
通讯作者：
Haardt, M
中科院分区：
文献类型：
--
作者：
Spencer, QH;Peel, CRB;Haardt, M
多输入多输出（MIMO）通信技术由于其高容量、增加的分集和干扰抑制的潜力而成为下一代无线系统的重要关注领域。对于诸如无线局域网和蜂窝电话之类的应用，MIMO系统将可能部署在单个基站必须同时与许多用户通信的环境中。因此，对多用户MIMO系统的研究近年来成为一个重要的研究课题。这样的系统具有将MIMO处理可实现的高容量与空分多址的益处结合的联合收割机的潜力。在这篇文章中，我们回顾了几个算法，已经提出了这个目标。我们描述了两类解决方案。第一种使用具有各种类型的发射器波束成形的信号处理方法。第二种使用“脏纸”编码来克服用户从其他用户的信号中看到的干扰。最后，我们描述了未来的研究领域在多用户MIMO通信。
Multiple-input multiple-output (MIMO) communication techniques have been an important area of focus for next-generation wireless systems because of their potential for high capacity, increased diversity, and interference suppression. For applications such as wireless LANs and cellular telephony, MIMO systems will likely be deployed in environments where a single base must communicate with many users simultaneously. As a result, the study of multi-user MIMO systems has emerged recently as an important research topic. Such systems have the potential to combine the high capacity achievable with MIMO processing with the benefits of space-division multiple access. In this article we review several algorithms that have been proposed with this goal in mind. We describe two classes of solutions. The first uses a signal processing approach with various types of transmitter beamforming. The second uses "dirty paper" coding to overcome the interference a user sees from signals intended for other users. We conclude by describing future areas of research in multi-user MIMO communications.