Energy Efficient Resource Allocation in MIMO-OFDMA Downlink Systems

Zijian Wang1, Luc Vandendorpe2

  • 1Université Catholique de Louvain
  • 2Université catholique de Louvain

Details

14:30 - 16:00 | Tue 5 Jul | Pentland A | R3.6

Session: Energy harvesting/ Green wireless communications

Abstract

This paper studies subcarrier allocation and precoder design for energy efficiency (EE) maximization in downlink multiple-input-multiple-output (MIMO)- orthogonal frequency-division multiple access (OFDMA) systems. We first propose a subcarrier allocation approach based on time-sharing. Then we show that the proposed subcarrier allocation results in a discontinuous quasi-concave EE function. Finally, we propose an algorithm to maximize EE. Numerical results show that the proposed algorithm efficiently finds the maximum of EE.