Sum capacity of the vector Gaussian broadcast channel and uplink-downlink duality

Pramod Viswanath, David N.C. Tse

Research output: Contribution to journalArticle

Abstract

We characterize the sum capacity of the vector Gaussian broadcast channel by showing that the existing inner bound of Marton and the existing upper bound of Sato are tight for this channel. We exploit an intimate four-way connection between the vector broadcast channel, the corresponding point-to-point channel (where the receivers can cooperate), the multiple-access channel (MAC) (where the role of transmitters and receivers are reversed), and the corresponding point-to-point channel (where the transmitters can cooperate).

Original languageEnglish (US)
Pages (from-to)1912-1921
Number of pages10
JournalIEEE Transactions on Information Theory
Volume49
Issue number8
DOIs
StatePublished - Aug 1 2003

Keywords

  • Broadcast channels
  • Downlink
  • Multiple antennas
  • Wireless system

ASJC Scopus subject areas

  • Information Systems
  • Computer Science Applications
  • Library and Information Sciences

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