TY - GEN
T1 - Behavior of outage probability in MISO systems with no channel state information at the transmitter
AU - Jorswieck, E. A.
AU - Boche, H.
N1 - Publisher Copyright:
© 2003 IEEE.
PY - 2003
Y1 - 2003
N2 - It is well known that, in terms of the ergodic capacity, the optimum transmit strategy is to allocate equal power to all available transmit antennas. We show that this transmit strategy is not the optimal one for minimizing the outage probability. The optimum strategy is then to avoid using all available antennas. The optimal number of active antennas depends on the required rate and the SNR. We propose an algorithm which computes the optimum number of active antennas for a given available number of transmit antennas, SNR, and rate. We compare the optimum strategy to equal power allocation.
AB - It is well known that, in terms of the ergodic capacity, the optimum transmit strategy is to allocate equal power to all available transmit antennas. We show that this transmit strategy is not the optimal one for minimizing the outage probability. The optimum strategy is then to avoid using all available antennas. The optimal number of active antennas depends on the required rate and the SNR. We propose an algorithm which computes the optimum number of active antennas for a given available number of transmit antennas, SNR, and rate. We compare the optimum strategy to equal power allocation.
UR - http://www.scopus.com/inward/record.url?scp=84939171833&partnerID=8YFLogxK
U2 - 10.1109/ITW.2003.1216766
DO - 10.1109/ITW.2003.1216766
M3 - Conference contribution
AN - SCOPUS:84939171833
T3 - Proceedings - 2003 IEEE Information Theory Workshop, ITW 2003
SP - 353
EP - 356
BT - Proceedings - 2003 IEEE Information Theory Workshop, ITW 2003
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2003 IEEE Information Theory Workshop, ITW 2003
Y2 - 31 March 2003 through 4 April 2003
ER -