Efficient capacity-based joint quantized precoding and transmit antenna selection using cross-entropy method for multiuser MIMO systems

Jung Chieh Chen, Min Han Chiu, Yi Syun Yang, Kuan Yuen Liao, Chih Peng Li

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number965834
JournalInternational Journal of Antennas and Propagation
Volume2012
DOIs
Publication statusPublished - 2012

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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