@inproceedings{7b58dcf1bbf44f38bd0fe66046cc289c,
title = "User-Pair Selection for QoS-Aware Secrecy Rate Maximization in Untrusted NOMA",
abstract = "Non-orthogonal multiple access (NOMA) has been recognized as one of the key enabling technologies for future generation wireless networks. Sharing the same time-frequency resource among users imposes secrecy challenges in NOMA in the presence of untrusted users. This paper characterizes the impact of user-pair selection on the secrecy performance of an untrusted NOMA system. In this regard, an optimization problem is formulated to maximize the secrecy rate of the strong user while satisfying the quality of service (QoS) demands of the user with poorer channel conditions. To solve this problem, we first obtain optimal power allocation in a two-user NOMA system, and then investigate the user-pair selection problem in a more generalized four user NOMA system. Extensive performance evaluations are conducted to validate the accuracy of the proposed results and present valuable insights on the impact of various system parameters on the secrecy performance of the NOMA communication system.",
author = "Sapna Thapar and Deepak Mishra and Ravikant Saini and Zhiguo Ding",
note = "Funding Information: This work was supported in parts by the SERB, DST, under the Grant no. CRG!2021/002464, and TCS RSP Fellowship. Funding Information: ACKNOWLEDGEMENT This work was supported in parts by the SERB, DST, under the Grant no. CRG!2021/002464, and TCS RSP Fellowship. Publisher Copyright: {\textcopyright} 2022 IEEE.; 96th IEEE Vehicular Technology Conference, VTC 2022-Fall 2022 ; Conference date: 26-09-2022 Through 29-09-2022",
year = "2022",
doi = "10.1109/VTC2022-Fall57202.2022.10013038",
language = "British English",
series = "IEEE Vehicular Technology Conference",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2022 IEEE 96th Vehicular Technology Conference, VTC 2022-Fall 2022 - Proceedings",
address = "United States",
}