Location-Aided Coordinated Analog Precoding for Uplink Multi-User Millimeter Wave Systems
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 mmW...
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Zusammenfassung: | 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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DOI: | 10.48550/arxiv.1711.03031 |