Deakin University
Browse

File(s) under permanent embargo

Pilot signal design for compressive sensing based random access in machine-type communications

Version 2 2024-06-05, 01:17
Version 1 2019-04-16, 15:41
conference contribution
posted on 2017-01-01, 00:00 authored by N Y Yu, K Lee, Jinho ChoiJinho Choi
In machine-type communications (MTC), a number of devices are present in a cell, but only a few of them attempt to access by sending preambles or pilots. For the sparse activity of devices, compressive sensing (CS) can be applied for joint detection of active devices and estimation of channel profiles. In this paper, a theoretical connection between pilots and the coherence of a CS measurement matrix is revealed for CS-based detection and estimation. Then, the Zadoff-Chu (ZC) and the power residue (PR) sequences are studied as potential candidates for pilot signals in CS-based random access. It is also shown that the CS measurement matrices from the ZC- and the PR-based pilots have theoretically bounded low coherence, which presents a theoretical guarantee of reliable recovery performance. Simulation results demonstrate that the proposed deterministic pilots outperform random binary and complex-valued pilots for CS-based random access in MTC.

History

Event

IEEE Communications Society. Conference (2017 : San Francisco, Calif.)

Series

IEEE Communications Society Conference

Pagination

1 - 6

Publisher

Institute of Electrical and Electronics Engineers

Location

San Francisco, Calif.

Place of publication

Piscataway, N.J.

Start date

2017-03-19

End date

2017-03-22

ISSN

1525-3511

ISBN-13

9781509041831

Language

eng

Publication classification

E1.1 Full written paper - refereed

Copyright notice

2017, IEEE

Editor/Contributor(s)

[Unknown]

Title of proceedings

WCNC 2017 : Proceedings of the 2017 IEEE Wireless Communications and Networking Conference