A Receive Antenna Selection for MIMO-OFDM System

The combination of Multiple-Input Multiple-Output (MIMO) and Orthogonal Frequency Division Multiplexing (OFDM) technologies gives wireless communications systems the advantages of lower bit error rate (BER) and higher data rate in frequency-selective fading environments. However, the main drawback of the MIMO-OFDM systems is the increase of complexity, and thus cost. In this paper, we propose an antenna selection method for a MIMO-OFDM receiver. The proposed method selects a proper combination of polarization antenna elements at receive antenna branches to achieve lower BER performance. Using the channel impulse responses measured in an indoor environment, numerical results show that the proposed selection method works effectively for the realistic channel and promises a great deal of decrease in computational complexity.