NDLI: Remarks on the criteria of constructing MIMO-MAC DMT optimal codes

Content Provider	IEEE Xplore Digital Library
Author	Hsiao-feng Lu Lahtonen, J. Vehkalahti, R. Hollanti, C.
Copyright Year	2010
Description	Author affiliation: Nat. Chiao Tung Univ., Hsinchu, Taiwan (Hsiao-feng Lu) \|\| Univ. of Turku, Turku, Finland (Lahtonen, J.; Vehkalahti, R.; Hollanti, C.)
Abstract	In this paper we investigate the criteria proposed by Coronel et al. for constructing MIMO MAC-DMT optimal codes over several classes of fading channels. We first show by a counterexample that their DMT result might not be correct when the channel has selective fading. For the case of symmetric MIMO-MAC flat fading channels, we study their criteria for constructing MAC-DMT optimal codes when the number of receive antennas is sufficiently large. We show their criterion is equivalent to requiring the codes of any subset of users to satisfy a joint non-vanishing determinant criterion when operating in the antenna pooling regime. Finally an upper bound on the product of minimum eigenvalues of the difference matrices is provided, and is used to show MIMO-MAC lattice codes satisfying their criterion exist only when the target multiplexing gain is small.
Starting Page	1
Ending Page	5
File Size	492434
Page Count	5
File Format	PDF
ISBN	9781424463725
e-ISBN	9781424464159
DOI	10.1109/ITWKSPS.2010.5503180
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-01-06
Publisher Place	Egypt
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM modulation Fading Receiving antennas Eigenvalues and eigenfunctions MIMO Signal to noise ratio Upper bound Lattices Integral equations Transmitting antennas
Content Type	Text
Resource Type	Article

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