In:
International Journal of Antennas and Propagation, Hindawi Limited, Vol. 2012 ( 2012), p. 1-7
Kurzfassung:
The current paper considers the joint precoding and transmit antenna selection to reduce hardware cost, such as radio-frequency chains, associated with antennas in the downlink of multiuser multiple-input multiple-output systems with limited feedback. The joint precoding and transmit antenna selection algorithm requires an exhaustive search of all possible combinations and permutations to find the optimum solution at the transmitter, thus resulting in extremely high computational complexity. To reduce the computational load while still maximizing channel capacity, the cross-entropy (CE) method is adopted to determine the suboptimum solution. Compared with the conventional genetic algorithm and random search method, the CE method provides better performance under the same computational complexity, as shown by the simulation results.
Materialart:
Online-Ressource
ISSN:
1687-5869
,
1687-5877
Sprache:
Englisch
Verlag:
Hindawi Limited
Publikationsdatum:
2012
ZDB Id:
2397585-4
