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Finite-SNR diversity-multiplexing tradeoff for Rayleigh MIMO channels

Abstract : In this paper, exact diversity-multiplexing trade-off (DMT) at finite signal to noise ratio (SNR) for multiple-input multiple-output (MIMO) systems with dual antennas at the transmitter (2xNr) and/or at the receiver (Ntx2) is derived over Rayleigh fading channels. We derive the outage probability of the mutual information between transmitted and received signals versus SNR. It is shown that at realistic SNRs, achievable diversity gains are significantly lower than asymptotic values. While space-time codes (STCs) for MIMO systems are conventionally designed to achieve the asymptotic DMT frontier, this finite-SNR DMT could provide a new insight to design STCs for practical MIMO systems optimized at operational SNRs.
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https://hal.archives-ouvertes.fr/hal-00830092
Contributor : Bibliothèque Télécom Bretagne <>
Submitted on : Tuesday, June 4, 2013 - 2:10:09 PM
Last modification on : Wednesday, July 7, 2021 - 3:16:02 PM

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Ammar El Falou, Walaa Hamouda, Charlotte Langlais, Charbel Abdel Nour, Catherine Douillard. Finite-SNR diversity-multiplexing tradeoff for Rayleigh MIMO channels. IEEE Communications Letters, Institute of Electrical and Electronics Engineers, 2013, 17 (4), pp.753 - 756. ⟨10.1109/LCOMM.2013.022213.130007⟩. ⟨hal-00830092⟩

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