Networked MIMO with clustered linear precoding

Jun Zhang, Runhua Chen, Jeffrey G. Andrews, Arunabha Ghosh, Robert W. Heath

Research output: Journal article publicationJournal articleAcademic researchpeer-review

430 Citations (Scopus)

Abstract

A clustered base transceiver station (BTS) coordination strategy is proposed for a large cellular MIMO network, which includes full intra-cluster coordinationto enhance the sum rateand limited inter-cluster coordinationto 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.

Original languageEnglish
Article number4907459
Pages (from-to)1910-1921
Number of pages12
JournalIEEE Transactions on Wireless Communications
Volume8
Issue number4
DOIs
Publication statusPublished - 1 Apr 2009
Externally publishedYes

Keywords

  • Base station coordination
  • Cellular technology
  • MIMO systems
  • Resource allocation and interference management

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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