Random Spreading With Higher Order Modulation in Unsourced Random Access

Unsourced random access (URA) is crucial for future massive access scenarios. Existing URA schemes often use low-order modulation and assess performance with a limited number of active users. This work presents a pilot-free URA scheme that employs random spreading and higher-order modulation. We der...

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Bibliographic Details

Published in:	IEEE communications letters Vol. 29; no. 4; pp. 829 - 833
Main Authors:	Dang, Jian, Zhang, Zaichen, Wu, Yongpeng
Format:	Journal Article
Language:	English
Published:	New York IEEE 01.04.2025 The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:	active user detection Adaptation models Algorithms Approximation algorithms Decoding Indexes Mathematical models Message passing Modulation multiple access Random access random spreading Symbols Unsourced random access Vectors
ISSN:	1089-7798, 1558-2558
Online Access:	Get full text
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