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- W2160447737 abstract "In this paper, we study the capacity of multiple antenna fading channels. We focus on the scenario where the fading coefficients vary quickly; thus an accurate estimation of the coefficients is generally not available to either the transmitter or the receiver. We use a block fading model proposed by Marzetta and Hochwald (see IEEE Trans. on Info. Theory, vol.45, no.1, p.139-57, 1999). The model does not assume any prior knowledge of the fading coefficients, but only assumes that the coefficients remain constant for a coherent interval T as an approximation of the continuously varying channel. We compute the asymptotic capacity of this channel at high SNR in terms of T, the number of transmit antennas M and the number of receive antennas N. While the capacity gain of the coherent multi-antenna channel is min{M,N} bps/Hz for every 3 dB increase in SNR, the corresponding gain for the non-coherent channel turns out to be M/sup */(1-M/sup *//T) bps/Hz, where M/sup */=min{M,N,[T/2]}. The capacity expression has a geometric interpretation of sphere packing in the Grassmann manifold." @default.
- W2160447737 created "2016-06-24" @default.
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- W2160447737 date "2002-11-11" @default.
- W2160447737 modified "2023-09-28" @default.
- W2160447737 title "Information theoretic limits for non-coherent multi-antenna communications" @default.
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- W2160447737 doi "https://doi.org/10.1109/wcnc.2000.904592" @default.
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