The asymptotic capacity for the non-coherent MIMO stationary channels having nt transmit and nr receive antennas with flat fading is the focus of this paper. Fading processes of concern are bandlimited. These non-coherent MIMO channels were studied by Etkin and Tse and lower bound of capacity was shown to grow with min(nt, nr)[1 - min(nt, nr)mu] log(SNR) where mu is the normalized Doppler bandwidth. The contribution of this paper is to specify the pre-log for MIMO channels and this is done by giving matching upper and lower bounds of the pre-log. Moreover min(nt, nr) factor in the pre-log term bears a small modification. The actual pre-log is min(nt, nr, 1/2mu)[1 - min(nt, nr, 1/2mu)mu] and takes into account the optimal number of streams that should be activated as a function of the Doppler bandwidth.
MIMO capacity pre-Log for flat fading stationary channels with no CSIR
PIMRC 2008, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, September 15-18, 2008, Cannes, France
Systèmes de Communication
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