Capacity of MIMO channels at different antenna configurations

Abdulgodoos Saad, Mahamod Ismail, Norbahiah Misran

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This research aims to study the effect of Channel State Information (CSI) at the transmitter on the overall channel capacity. The capacity of MIMO correlated Rayleigh channels for different sntenna configurations with and without channel knowledge (CSI) at the transmitter is simulated. When CSI is available at the transmitter (i.e., informed transmitter), waterfilling algorithm is used to allocate the power among the transmitter antennas. Simulations show that capacity is improved significantly when CSI is known at the transmitter. It also shows that the lack in channel knowledge (i,e., uninformed transmitter) can be compensated for by increasing the number of antennas in the receiver (Mr). When the number of antennas in the transmitter is larger than those in the receiver, using waterfilling becomes necessary to get the optimum capacity.

Original languageEnglish
Pages (from-to)4595-4602
Number of pages8
JournalJournal of Applied Sciences
Volume8
Issue number24
DOIs
Publication statusPublished - 2008

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MIMO systems
Transmitters
Antennas
Channel state information
Channel capacity

Keywords

  • Channel state information at the transmitter
  • Higher SNR region
  • Informed/uninformed transmitter
  • Lower SNR region
  • MIMO correlated channels
  • Waterfilling algorithm

ASJC Scopus subject areas

  • General

Cite this

Capacity of MIMO channels at different antenna configurations. / Saad, Abdulgodoos; Ismail, Mahamod; Misran, Norbahiah.

In: Journal of Applied Sciences, Vol. 8, No. 24, 2008, p. 4595-4602.

Research output: Contribution to journalArticle

Saad, Abdulgodoos ; Ismail, Mahamod ; Misran, Norbahiah. / Capacity of MIMO channels at different antenna configurations. In: Journal of Applied Sciences. 2008 ; Vol. 8, No. 24. pp. 4595-4602.
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