Make-it-real-and-anticirculating orthogonal space-time coding for MIMO OFDM/OQAM

Abstract

We propose an orthogonal and full rate MIMO space-time coding technique for OFDM/OQAM, called `make-it-real-and-anticirculating' (MIRAAC), to perform energy efficient wireless data transmission. The equivalent MIMO channel (after space-time coding, propagation and decoding) is made real and anticirculating, so that the receiver can suppress all interference very simply: just by extracting the real part of the received signal. Our simulations show that large antenna arrays (like those being studied for the future 5th generation networks) save a great amount of energy.