Multiplexing and Diversity Gains in Noncoherent Massive MIMO Systems
M. Chowdhury, A. Manolakos, A. Goldsmith
We study the tradeoffs between diversity (related to decoding error probability) and multiplexing (related to the number of simultaneous users) inherent in a single-input multiple-output (SIMO) system with a large number of antennas. We find that, even without channel state information, given a large enough number of antennas, multiuser detection may be performed with a vanishingly small error probability. A conference version of this work appeared in the 2015 49th Asilomar Conference on Signals, Systems and Computers.