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On the SINR distribution of grant-free random access with moderate MIMO

journal contribution
posted on 2020-05-06, 00:00 authored by Jinho ChoiJinho Choi
With a limited bandwidth to support massive connectivity in machine-type communication (MTC), various massive multiple-input multiple-output (MIMO) based random access schemes have been studied. Among those, in particular, grant-free random access with massive MIMO for short message delivery from devices and sensors is promising thanks to low signaling overhead. While asymptotic analysis becomes straightforward with the number of antennas approaching infinity, in practice, the number of antennas is limited, making asymptotic analysis useless. For non-asymptotic analysis, in this paper, we derive an approximate closed-form expression for the distribution of the signal-to-interference-plus-noise ratio (SINR) in grant-free random access with moderate (not massive) MIMO.

History

Journal

IEEE Wireless Communications Letters

Issue

(Early Access)

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Location

Piscataway, N.J.

ISSN

2162-2337

eISSN

2162-2345

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2020, IEEE