On the capacity of multiple-antenna systems in Rician fading

Sudharman K. Jayaweera, H. Vincent Poor

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93 Scopus citations


The effect of Rician-ness on the capacity of multipleantenna systems is investigated under the assumption that channel state information (CSI) is available only at the receiver. The average-power-constrained capacity of such systems is considered under two different assumptions on the available knowledge about fading at the transmitter: the case in which the transmitter has no knowledge of fading at all, and the case in which the transmitter has knowledge of the distribution of the fading process but not the instantaneous CSI. The exact capacity is given for the former case, while capacity bounds are derived for the latter case. A new signaling scheme is also proposed for the latter case and it is shown that by exploiting the knowledge of Rician-ness at the transmitter via this signaling scheme, significant capacity gain can be achieved. The derived capacity bounds are evaluated explicitly to provide numerical results in some representative situations.

Original languageEnglish (US)
Pages (from-to)1102-1111
Number of pages10
JournalIEEE Transactions on Wireless Communications
Issue number3
StatePublished - May 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


  • MIMO capacity
  • Multiple-antenna systems
  • Non-central Wishart distribution
  • Rician fading
  • Wishart distribution


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