Open Access
ARTICLE
Fingerprint-Based Millimeter-Wave Beam Selection for Interference Mitigation in Beamspace Multi-User MIMO Communications
Sangmi Moon1, Hyeonsung Kim1, Seng-Phil Hong2, Mingoo Kang3, Intae Hwang1,*
1 Department of Electronic Engineering, Chonnam National University, Gwangju, 61186, Korea
2 Hancom With Inc., Seongnam-si, 13493, Korea
3 Division of Information & Telecommunication, Hanshin University, Osan-si, 18101, Korea
* Corresponding Author: Intae Hwang. Email:
Computers, Materials & Continua 2021, 66(1), 59-70. https://doi.org/10.32604/cmc.2020.013132
Received 27 July 2020; Accepted 27 August 2020; Issue published 30 October 2020
Abstract
Millimeter-wave communications are suitable for application to massive multiple-input multiple-output systems in order to satisfy the ever-growing
data traffic demands of the next-generation wireless communication. However,
their practical deployment is hindered by the high cost of complex hardware, such
as radio frequency (RF) chains. To this end, operation in the beamspace domain,
through beam selection, is a viable solution. Generally, the conventional beam
selection schemes focus on the feedback and exhaustive search techniques. In
addition, since the same beam in the beamspace may be assigned to a different
user, conventional beam selection schemes suffer serious multi-user interference.
In addition, some RF chains may be wasted, since they do not contribute to the
sum-rate performance. Thus, a fingerprint-based beam selection scheme is
proposed to solve these problems. The proposed scheme conducts offline
group-based fingerprint database construction and online beam selection to
mitigate multi-user interference. In the offline phase, the contributing users with
the same best beam are grouped. After grouping, a fingerprint database is created
for each group. In the online phase, beam selection is performed for purposes of
interference mitigation using the information contained in the group-based fingerprint database. The simulation results confirm that the proposed beam selection
scheme can achieve a signal-to-interference-plus-noise ratio and sum-rate performance which is close to those of a fully digital system, and having much higher
energy efficiency.
Keywords
Cite This Article
S. Moon, H. Kim, S. Hong, M. Kang and I. Hwang, "Fingerprint-based millimeter-wave beam selection for interference mitigation in beamspace multi-user mimo communications,"
Computers, Materials & Continua, vol. 66, no.1, pp. 59–70, 2021. https://doi.org/10.32604/cmc.2020.013132