@inproceedings{ad73ddc97bfa414891dbc33905d734d2,
title = "On Pilot-Free Slotted ALOHA for Massive Access",
abstract = "This paper proposes a pilot-free repetition-based slotted ALOHA (PF-RSA) scheme for a massive random access system. The users utilize coded differential modulation and transmit with the repetition-based SA (RSA) protocol. The base station employs non-coherent detection and cancellation for recovering all users' messages. We develop a belief propagation (BP) based non-coherent detection and estimation which offers improved performance. It is demonstrated that the PF-RSA scheme can achieve almost the identical throughput of the conventional pilot-aided RSA while relaxing the need of pilots. We also show that the PF-RSA is applicable to massive access with asynchrony.",
keywords = "Differential modulation, Interference cancellation, Massive access, Non-coherent detection, Slotted ALOHA",
author = "Xu Li and Tao Yang",
note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 2023 IEEE Global Communications Conference, GLOBECOM 2023 ; Conference date: 04-12-2023 Through 08-12-2023",
year = "2023",
doi = "10.1109/GLOBECOM54140.2023.10436945",
language = "英语",
series = "Proceedings - IEEE Global Communications Conference, GLOBECOM",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "2390--2395",
booktitle = "GLOBECOM 2023 - 2023 IEEE Global Communications Conference",
address = "美国",
}