Networked MIMO with clustered linear precoding
Networked MIMO with clustered linear precoding
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DOI：
10.1109/twc.2009.080180
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发表时间：
2008-08
影响因子：
10.4
通讯作者：
Jun Zhang;Runhua Chen;J. Andrews;Arunabha Ghosh;R. Heath
中科院分区：
文献类型：
--
作者：
Jun Zhang;Runhua Chen;J. Andrews;Arunabha Ghosh;R. Heath
A clustered base transceiver station (BTS) coordination strategy is proposed for a large cellular MIMO network, which includes full intra-cluster coordination-to enhance the sum rate-and limited inter-cluster coordination-to reduce interference for the cluster edge users. Multi-cell block diagonalization is used to coordinate the transmissions across multiple BTSs in the same cluster. To satisfy per-BTS power constraints, three combined precoder and power allocation algorithms are proposed with different performance and complexity tradeoffs. For inter-cluster coordination, the coordination area is chosen to balance fairness for edge users and the achievable sum rate. It is shown that a small cluster size (about 7 cells) is sufficient to obtain most of the sum rate benefits from clustered coordination while greatly relieving channel feedback requirement. Simulations show that the proposed coordination strategy efficiently reduces interference and provides a considerable sum rate gain for cellular MIMO networks.
