Randomly-Directional Beamforming in Millimeter-Wave Multiuser MISO Downlink

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In this paper, the performance of opportunistic random beamforming (RBF) and the multiuser (MU) gain in millimeter-wave (mm-wave) MU multiple-input single-output (MISO) downlink systems are analyzed based on the uniform random single-path (UR-SP) channel model suitable for highly directional mm-wave radio propagation channels. It is shown that under the UR-SP channel model, RBF achieves linear sum rate scaling with respect to (w.r.t.) the number of transmit antennas and, furthermore, yields optimal sum rate performance when the number of transmit antennas is large, if the number of users increases linearly w.r.t. the number of transmit antennas. Several beam training and user selection methods are investigated to yield insights into the most effective beamforming and scheduling choice for mm-wave MU-MISO in various operating conditions. Simulation results validate our analysis based on asymptotic techniques for finite cases.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2016-02
Language
English
Article Type
Article
Keywords

BROADCAST CHANNELS; WIRELESS; NETWORKS; ANTENNAS; SYSTEMS

Citation

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, v.15, no.2, pp.1086 - 1100

ISSN
1536-1276
DOI
10.1109/TWC.2015.2483493
URI
http://hdl.handle.net/10203/207676
Appears in Collection
EE-Journal Papers(저널논문)
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