Massive MIMO-Enabled Wireless Backhauls for Full-Duplex Small Cells
Massive MIMO-Enabled Wireless Backhauls for Full-Duplex Small Cells
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DOI：
10.1109/glocom.2014.7417670
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发表时间：
2014-12
期刊：
影响因子：
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通讯作者：
H. Tabassum;A. Sakr;E. Hossain
中科院分区：
文献类型：
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作者：
H. Tabassum;A. Sakr;E. Hossain
低功率无线设备的自干扰（SI）消除能力的最新进展为在小小区网络中实现全双工（FD）自回程铺平了道路。FD自回程允许将常规无线电接入网络（RAN）频谱同时用于回程以及接入链路。在本文中，我们建模和分析大规模的MIMO使能的无线回程网络，由混合的小小区，配置在带内或带外回程模式与一定的概率。我们认为一个分层的网络结构来模拟这些网络和表征的下行链路覆盖概率的小小区基站（SBS）的带内和带外回程模式。研究了同层和跨层回程干扰对小小区用户下行链路信干比（SIR）覆盖的影响。数值结果表明，只实现带内或带外回程解决方案可能是没有用的。相反，应该实现具有带内和带外小小区的正确比例的混合系统。
Recent advancements in the self-interference (SI) cancellation capability of low power wireless devices pave the way of implementing full-duplex (FD) self-backhauling in small-cell networks. FD self-backhauling allows the use of conventional radio access network (RAN) spectrum for backhaul as well as access links concurrently. In this paper, we model and analyze massive MIMO- enabled wireless backhaul networks that are composed of a mixture of small cells, configured either in in-band or out-of-band backhaul mode with a certain probability. We consider a hierarchical network structure to model these networks and characterize the downlink coverage probability of a small cell base station (SBS) for both the in-band and out-of-band backhaul modes. The impact of co-tier and cross-tier backhaul interferences on downlink signal-to-interference ratio (SIR) coverage of small cell users is investigated. Numerical results demonstrate that implementing only either the in-band or out-of-band backhauling solutions may not be useful. Instead, a hybrid system with correct proportion of in-band and out-of-band small cells should be implemented.