Secure RSMA for CF-mMIMO Systems With Low-Resolution DACs

This letter presents an investigation into secure transmission in a downlink rate-splitting-aided cell-free massive multiple-input multiple-output system. By incorporating the low-resolution digital-to-analog converters and imperfect channel knowledge, we derive tight closed-form expressions for the...

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Vydáno v:	IEEE wireless communications letters Ročník 13; číslo 6; s. 1660 - 1664
Hlavní autoři:	Zhang, Yao, Yang, Kaixi, Xia, Wenchao, Zhang, Jun, Ni, Yiyang, Lu, Weidang
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Piscataway IEEE 01.06.2024 The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:	Algorithms cell-free massive multiple-input multiple-output Decoding Digital to analog converters Downlink Interference low-resolution digital-to-analog converters path-following algorithm Power control Rate-splitting multiple access secure transmission Security Signal to noise ratio Streams
ISSN:	2162-2337, 2162-2345
On-line přístup:	Získat plný text
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Shrnutí:	This letter presents an investigation into secure transmission in a downlink rate-splitting-aided cell-free massive multiple-input multiple-output system. By incorporating the low-resolution digital-to-analog converters and imperfect channel knowledge, we derive tight closed-form expressions for the data rate and secrecy rate under Ricean fading channels. Additionally, we formulate a power control problem with the objective of maximizing the weighted sum data rate, while ensuring a target secrecy rate for all user equipments. A path-following optimization algorithm is then proposed to determine its solution numerically. All theoretical analyses and the efficacy of the proposed algorithm are validated through extensive simulations.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14
ISSN:	2162-2337 2162-2345
DOI:	10.1109/LWC.2024.3385775