Precoder and capacity expressions for optimal two-user MIMO transmission with per-antenna power constraints

Jonghyun Park, Wonjin Sung, Tolga M. Duman

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

In this letter, multiuser multiple-input multiple-output (MIMO) precoding which achieves the Gaussian broadcast channel (GBC) capacity under the per-antenna power constraint (PAPC) is investigated. In particular, closed-form expressions for both the MIMO precoder and the corresponding sum capacity are presented for the two-user case. We show that the result can also be utilized to provide the two-user capacity expression under the total power constraint (TPC) of transmit antennas.

Original languageEnglish (US)
Article number5599950
Pages (from-to)996-998
Number of pages3
JournalIEEE Communications Letters
Volume14
Issue number11
DOIs
StatePublished - Nov 1 2010

Keywords

  • Broadcast channel
  • multiuser MIMO
  • per-antenna power constraint
  • precoder
  • sum capacity.per-antenna power constraint

ASJC Scopus subject areas

  • Modeling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

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