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arXiv · 1711.03031

Location-Aided Coordinated Analog Precoding for Uplink Multi-User Millimeter Wave Systems

Flavio Maschietti·David Gesbert·Paul de Kerret
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Abstract

Millimeter wave (mmWave) communication is expected to play an important role in next generation cellular networks, aiming to cope with the bandwidth shortage affecting conventional wireless carriers. Using side-information has been proposed as a potential approach to accelerate beam selection in mmWave massive MIMO (m-MIMO) communications. However, in practice, such information is not error-free, leading to performance degradation. In the multi-user case, a wrong beam choice might result in irreducible inter-user interference at the base station (BS) side. In this paper, we consider location-aided precoder design in a mmWave uplink scenario with multiple users (UEs). Assuming the existence of direct device-to-device (D2D) links, we propose a decentralized coordination mechanism for robust fast beam selection. The algorithm allows for improved treatment of interference at the BS side and in turn leads to greater spectral efficiencies.

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Flavio Maschietti, David Gesbert, Paul de Kerret. 2017-11-08. Location-Aided Coordinated Analog Precoding for Uplink Multi-User Millimeter Wave Systems. https://arxiv.org/abs/1711.03031

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