Preprint Article Version 1 This version is not peer-reviewed

Large-Scale Antenna Systems and Massive Machine Type Communications

Version 1 : Received: 22 August 2019 / Approved: 25 August 2019 / Online: 25 August 2019 (16:48:58 CEST)

How to cite: Pereira de Figueiredo, F.A.; Cardoso, F.A.C.M.; Miranda, J.P.; Moerman, I.; Dias, C.F.; Fraidenraich, G. Large-Scale Antenna Systems and Massive Machine Type Communications. Preprints 2019, 2019080256 (doi: 10.20944/preprints201908.0256.v1). Pereira de Figueiredo, F.A.; Cardoso, F.A.C.M.; Miranda, J.P.; Moerman, I.; Dias, C.F.; Fraidenraich, G. Large-Scale Antenna Systems and Massive Machine Type Communications. Preprints 2019, 2019080256 (doi: 10.20944/preprints201908.0256.v1).

Abstract

In this paper, we identify issues and possible solutions in the key area of large-scale antenna systems, also know as Massive Multiple Input Multiple Output (MIMO) systems. Additionally, we propose the use of Massive MIMO technology as a means to tackle the uplink mixed-service communication problem. Under the assumption of an available physical narrowband shared channel (PNSCH), the capacity of the MTC network and, in turn, that of the whole system, can be increased by grouping Machine-Type Communication (MTC) devices into clusters and letting each cluster share the same time-frequency physical resource blocks. We study the feasibility of applying sub-optimal linear detection to the problem of detecting a large number of MTC devices sharing the same time-frequency resources at the uplink of a base station (BS) equipped with a large number of antennas, M. In our study, we derive the achievable lower-bound rates for the studied sub-optimal linear detectors and show that the transmitted power of each MTC device can be reduced as M increases, which is a very important result for powerconstrained MTC devices running on batteries. Our simulation results suggest that, as M is made progressively larger, the performance of sub-optimal linear detection methods approach the matched filter bound, also known as perfect interference-cancellation bound.

Subject Areas

massive MIMO; spectral efficiency; MTC

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