Publication

Abstract : The construction for Massive MIMO based on the overlap of Alamouti codes over the spatial dimension is proposed. In order to separate the overlapped streams at the receiver, the V-BLAST algorithm is employed such that the scheme achieves a combination of diversity and multiplexing gain. It is found that the scheme outperforms the superimposed but non-overlapped approach proposed by Tan and Calderbank already for a relatively small setup with 6 transmit and 20 receive antennas. Though not discussed in this first work, it is evident from the presentation that a similar overlapping strategy can also be employed in time and based on more general space time code constructions. If confirmed, the method can lead to very simple and scalable schemes to be used in Massive MIMO systems.