Title :
On the capacity of multiple-antenna systems in Rician fading
Author :
Jayaweera, Sudharman K. ; Poor, H. Vincent
fDate :
5/1/2005 12:00:00 AM
Abstract :
The effect of Rician-ness on the capacity of multiple-antenna 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.
Keywords :
Rician channels; antenna arrays; channel capacity; telecommunication signalling; Rician fading process; average-power-constrained capacity; channel state information; multiple-antenna system capacity; numerical results; receiver; signaling scheme; transmitter; AWGN; Channel state information; Fading; MIMO; Rayleigh channels; Receiving antennas; Rician channels; Transmitters; Upper bound; Wireless communication; MIMO capacity; Rician fading; Wishart distribution; multiple-antenna systems; noncentral Wishart distribution;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2005.846970