Effects of imperfect channel state information on the capacity of broadcast OSDMA-MIMO systems

G. Primolevo, O. Simeone, U. Spagnolini

Research output: Contribution to conferencePaperpeer-review

15 Scopus citations

Abstract

The capacity of a Multiple Input Multiple Output (MIMO) broadcast system with Orthogonal Space Division Multiple Access (OSDMA) is studied under the assumptions of noisy and/or delayed Channel State Information (CSI) available at the transmitter. The impact of channel estimation errors and outdated CSI is evaluated both analytically and through Monte Carlo simulations for varying system parameters (i.e., channel decorrelation, number of users, number of antennas). It is found that channel variability is the predominant cause of performance degradation in a realistic setting, where feedback of CSI from the receivers to the transmitter takes a finite amount of time, thus suggesting to limit the use of OSDMA to channels varying slowly enough.

Original languageEnglish (US)
Pages546-550
Number of pages5
StatePublished - Dec 1 2004
Externally publishedYes
Event2004 IEEE 5th Workshop on Signal Processing Advances in Wireless Communications, SPAWC - Lisbon, Portugal
Duration: Jul 11 2004Jul 14 2004

Other

Other2004 IEEE 5th Workshop on Signal Processing Advances in Wireless Communications, SPAWC
CountryPortugal
CityLisbon
Period7/11/047/14/04

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Engineering(all)

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