Coordination on the MISO interference channel using the virtual SINR framework
Coordination on the MISO interference channel using the virtual SINR framework
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发表时间：
2009
影响因子：
15
通讯作者：
R. Zakhour
中科院分区：
文献类型：
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作者：
R. Zakhour
本文研究了近年来引起学术界广泛关注的干扰信道协调问题。更准确地说，在多小区/链路环境中，考虑协调波束形成，其中配备多个天线的基站尽管受到其他基地的干扰，但每个基站都试图为单独的用户服务。对于单天线用户，这对应于[1,2]中考虑的所谓MISO IC。在本文中，我们提出了一种分布式方法h来设计用于发射器的波束形成矢量，该方法仅依赖于每个基地的本地信道状态信息（CSI）。该技术利用了一种与[1]中提出的虚拟上行链路方法类似的度量。在某些情况下，我们分析地证明了所提出的方法在达到速率区域外边界方面的最优性。我们进行了模拟，显示了一般设置下的增益。
This paper addresses the problem of coordination on the interference channel (IC), which has attracted a lot of attent ion in the research community recently. More precisely, coordi nated beamforming is considered, in a multi-cell/link envi ronment where base stations equipped with multiple antenna s each attempt to serve a separate user despite the interferen ce generated by the other bases. With single antenna users, thi s corresponds to the so-called MISO IC considered among others in [1, 2]. In this paper, we propose a distributed approac h for designing the beamforming vectors to be used at the trans mitters, which relies only on local channel state informati on (CSI) at each base. The technique exploits a metric which is reminiscent of the virtual uplink method proposed in [1]. We demonstrate analytically the optimality of the proposed approach in terms of achieving the outer bound of the rate region in certain cases. We conduct simulations showing the gains for general settings.