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Flow-level modeling of multi-user beamforming in mobile networks

Abstract : Among the several features that are foreseen for increasing the capacity of cellular systems, Multi-user multiple-input multiple-output (MU-MIMO) is considered as a key en-abling technology. Particularly, MU-beamforming is a powerful means of increasing the system capacity and throughput by creating several spatial signals to different users on the same time/frequency resource. In this paper, we develop an analytical model for MU-beamforming based on queuing theory combined with network simulations. The proposed framework is used for evaluating the potential gains in terms of capacity and throughput in LTE-Advanced system. Several scenarios are studied, with and without beamforming. Results show an important gain of SU-beamforming over the classical system without beamforming and a further gain of MU-beamforming, especially at high loads.
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Submitted on : Wednesday, February 4, 2015 - 9:23:10 AM
Last modification on : Sunday, June 26, 2022 - 9:44:06 AM
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Ahlem Khlass, Thomas Bonald, Salah Eddine Elayoubi. Flow-level modeling of multi-user beamforming in mobile networks. RAWNET, May 2014, Hammamet, Tunisia. pp.70 - 77, ⟨10.1109/WIOPT.2014.6850281⟩. ⟨hal-01112973⟩



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