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Layered Preambles based on NOMA for MTC with Two Different Types of Devices

conference contribution
posted on 2021-01-01, 00:00 authored by Jinho ChoiJinho Choi
In machine-type communication (MTC), random access has been employed for a number of devices and sensors to access uplink channels using a pool of preambles. To support different priorities, random access can be generalized with multiple resource blocks (RBs), which however results in a poor spectral efficiency. In this paper, in order to achieve a high spectral efficiency, random access with layered preambles (RALP) is proposed so that devices of two different priorities, namely type-1 and type-2 devices, can co-exist within one RB based on the notion of power-domain non-orthogonal multiple access (NOMA).

History

Pagination

1-5

Location

Helsinki, Finland

Start date

2021-04-25

End date

2021-04-28

ISBN-13

9781728189642

Language

eng

Publication classification

E1 Full written paper - refereed

Title of proceedings

VTC2021-Spring : Proceedings of the 2021 IEEE 93rd Vehicular Technology Conference

Event

IEEE Vehicular Technology Society. Conference (2021 : 93rd : Helsinki, Finland)

Publisher

IEEE

Place of publication

Piscataway, N.J.

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