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Networked MIMO with Clustered Linear Precoding (2008)
| Citations: | 89 - 18 self |
BibTeX
@MISC{Zhang08networkedmimo,
author = {Jun Zhang and Runhua Chen and Jeffrey G. Andrews and Arunabha Ghosh and Robert W. Heath and Jr.},
title = { Networked MIMO with Clustered Linear Precoding},
year = {2008}
}
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Abstract
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.
Keyphrases
clustered linear inter-cluster coordination coordination strategy multi-cell block diagonalization different performance complexity tradeoff clustered base transceiver station multiple btss power allocation algorithm small cluster size large cellular mimo network edge user cellular mimo network full intra-cluster coordination coordination area sum rate benefit achievable sum rate sum rate per-bts power constraint cluster edge user considerable sum rate gain
