Sum-rate optimal multi-antenna downlink beamforming strategy based on clique search

Taesang Yoo, Andrea Goldsmith

Research output: Chapter in Book/Report/Conference proceedingConference contribution

55 Scopus citations

Abstract

We consider a multi-user MIMO downlink system employing zero-forcing beamforming (ZFBF) as a spatial multiplexing strategy, and propose low-complexity user subset selection methods based on a clique (fully connected subgraph) search. The proposed algorithms, maximum weighted clique (MWC)-ZFBF and greedy weighted clique (GWC)-ZFBF, are shown to achieve the asymptotic sum-capacity of MIMO downlink channels as the number of users goes to infinity. Thus, clique search based ZFBF is an appealing strategy in MIMO downlink systems with a large number of users.

Original languageEnglish (US)
Title of host publicationGLOBECOM'05
Subtitle of host publicationIEEE Global Telecommunications Conference, 2005
Pages1510-1514
Number of pages5
DOIs
StatePublished - 2005
Externally publishedYes
EventGLOBECOM'05: IEEE Global Telecommunications Conference, 2005 - St. Louis, MO, United States
Duration: Nov 28 2005Dec 2 2005

Publication series

NameGLOBECOM - IEEE Global Telecommunications Conference
Volume3

Other

OtherGLOBECOM'05: IEEE Global Telecommunications Conference, 2005
CountryUnited States
CitySt. Louis, MO
Period11/28/0512/2/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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