Multiuser MIMO-MAC capacity in the low SNR regime: Channel knowledge and double-scattering.
(pp. pp. 2429-2432).
We investigate the sum capacity of the uplink multiuser multipleinput multiple-output (MIMO) multiple-access channel (MAC) in the low signal-to-noise ratio (SNR) regime. For each user, the MIMO channel is modeled according to a general class of stochastic channel matrices, known as double-scattering. Assuming that each user knows only their own spatial correlation matrices and employs optimal statistical beamforming transmission, we present new analytical approximations for the sum capacity of the MIMO-MAC for low SNR values. Our approximations are accurate, and lead to key insights into the effect of correlation. ©2009 IEEE.
|Title:||Multiuser MIMO-MAC capacity in the low SNR regime: Channel knowledge and double-scattering|
|UCL classification:||UCL > School of BEAMS > Faculty of Engineering Science
UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering
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