On the usage of antennas in MIMO and MISO interference channels

Mariam Kaynia, Andrea J. Goldsmith, David Gesbert, Geir E. Øien

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

Abstract

We investigate the performance of an uncoordinated 2 link MIMO interference channel as a function of the number of antennas and the average channel gains. The channel coefficients are random and uncorrelated, all links undergo Rayleigh fading, and the transmitters have no channel state information. The analysis is done in terms of ergodic capacity and outage probability. For non-asymptotic networks (i.e., when the number of transmit and receive antennas is finite and small), we derive upper and lower bounds to both our performance metrics. Moreover, the particular case of a MISO channel is considered, where exact expressions for the ergodic capacity, distribution of the capacity, and outage probability are derived. It is concluded theoretically, and somewhat surprisingly, that using all transmit antennas is not always optimal. That is, depending on the average channel gains and the requested communication rate, a transmitter should apply its antennas in different ways in order to minimize the outage probability.

Original languageEnglish (US)
Title of host publication2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2010
DOIs
StatePublished - 2010
Externally publishedYes
Event2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2010 - Marrakech, Morocco
Duration: Jun 20 2010Jun 23 2010

Publication series

NameIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC

Conference

Conference2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2010
CountryMorocco
CityMarrakech
Period6/20/106/23/10

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Information Systems

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