Low-SNR Analysis of MIMO Weibull Fading Channels
Artikel i vetenskaplig tidskrift, 2012

The capacity performance of multiple-input multiple-output (MIMO) systems in Weibull fading channels has not been properly addressed in the literature. In this paper, we consider three MIMO architectures, namely spatial-multiplexing (SM) MIMO systems with optimal and minimum mean square error (MMSE) receivers as well as orthogonal space-time block-codes (OSTBC) MIMO systems, that operate over Weibull fading channels. Since the capacity analysis at arbitrary Signal-to-Noise ratios (SNRs) is intractable, we focus on the low-SNR regime which is characterized by the minimum energy per information bit to reliably convey any positive rate and the wideband slope. For these two metrics, new closed-form expressions are derived which enable us to perform a detailed comparative study of the considered configurations and assess MIMO capacity in Weibull fading channels.

Weibull fading


MIMO systems


time block-codes

linear receivers


Michail Matthaiou

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik

C. J. Zhong

Zhejiang University

IEEE Communications Letters

1089-7798 (ISSN) 15582558 (eISSN)

Vol. 16 5 694-697 6168877





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