Antenna decision method for downlink multiuser MIMO systems with receive antenna allocation

Abstract

This paper proposes an antenna decision method for downlink multiuser MIMO (MU-MIMO) with receive antenna allocation per subcarrier. When receive antenna allocation is used, each receiver requires the information of the antenna allocation before receiving the data; for this an overhead signal is used. The proposed method decreases the overhead by deciding an antenna with comparison of received power at each antenna of the receiver. Computer simulations show that the proposed method offers highly accurate antenna decision and high channel capacity with one OFDM symbol.