Precoded integer-forcing universally achieves the MIMO capacity to within a constant gap

Or Ordentlich, Uri Erez

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

An open-loop single-user multiple-input multiple-output (MIMO) communication scheme is considered where a transmitter, equipped with multiple antennas, encodes the data into independent streams all taken from the same linear code. The coded streams are then linearly precoded using the encoding matrix of a perfect linear dispersion space-time code. At the receiver side, integer-forcing equalization is applied, followed by standard single-stream decoding. It is shown that this communication architecture achieves the capacity of any Gaussian MIMO channel up to a gap that depends only on the number of transmit antennas.

Original languageAmerican English
Article number6954504
Pages (from-to)323-340
Number of pages18
JournalIEEE Transactions on Information Theory
Volume61
Issue number1
DOIs
StatePublished - 1 Jan 2015
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

Keywords

  • Equalizers
  • Linear codes
  • MIMO
  • Space-time codes

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