A non-orthogonal uplink/downlink IoT solution for next-generation ISAC systems
A non-orthogonal uplink/downlink IoT solution for next-generation ISAC systems
An integrated sensing and communication (ISAC) system is investigated, where the base station (BS) provides both uplink and downlink Internet-of-Things (IoT) services as well as target sensing services. Furthermore, non-orthogonal transmission (NO-T) is introduced for improving the spectrum efficiency. The deleterious effects of hardware impairments, channel estimation errors, and imperfect successive interference cancellation are taken into account. Both the exact and asymptotic outage probabilities (OPs) of the IoT devices as well as the probability of successful detection (PoD) are derived for characterizing the communication and sensing (C&S) performances. As a further development, in the presence of the sensing requirements, a communication-centric power allocation (PA) problem is formulated for maximizing the sum rate of the IoT devices. Given the non-convexity of the problem, an alternating optimization algorithm is developed for finding a near-optimal PA. The simulation results confirm the accuracy of the analysis and demonstrate that: (1) The above non-ideal factors degrade the C&S performances; (2) The NO-T ISAC system considered outperforms pure ISAC in terms of both its OP and PoD; (3) Compared to other baseline PA schemes, the proposed algorithm maximizes the sum rates while meeting the sensing requirements.
Hardware, Integrated sensing and communication, Internet of Things, Optimization, Performance evaluation, Resource management, Sensors, Signal to noise ratio, non-orthogonal transmission, performance analysis, power allocation
Liu, Meng
737cf56c-35aa-4167-a296-81a9729faa20
Yang, Minglei
af21230f-af68-4198-9057-0f26f4905970
Wei, Fa
b548a8b1-8e45-4fbe-9192-bce7f96c75ce
Li, Huifang
52931383-b315-437b-8598-58ca9ffe7ec1
Zhang, Zhaoming
afc0ff3c-7c76-45ae-a374-bfa6cf6ced4e
Nallanathan, Arumugam
d255cda5-a015-4bb9-9f17-88614a544396
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Liu, Meng
737cf56c-35aa-4167-a296-81a9729faa20
Yang, Minglei
af21230f-af68-4198-9057-0f26f4905970
Wei, Fa
b548a8b1-8e45-4fbe-9192-bce7f96c75ce
Li, Huifang
52931383-b315-437b-8598-58ca9ffe7ec1
Zhang, Zhaoming
afc0ff3c-7c76-45ae-a374-bfa6cf6ced4e
Nallanathan, Arumugam
d255cda5-a015-4bb9-9f17-88614a544396
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Liu, Meng, Yang, Minglei, Wei, Fa, Li, Huifang, Zhang, Zhaoming, Nallanathan, Arumugam and Hanzo, Lajos
(2023)
A non-orthogonal uplink/downlink IoT solution for next-generation ISAC systems.
IEEE Internet of Things Journal.
(doi:10.1109/JIOT.2023.3318314).
Abstract
An integrated sensing and communication (ISAC) system is investigated, where the base station (BS) provides both uplink and downlink Internet-of-Things (IoT) services as well as target sensing services. Furthermore, non-orthogonal transmission (NO-T) is introduced for improving the spectrum efficiency. The deleterious effects of hardware impairments, channel estimation errors, and imperfect successive interference cancellation are taken into account. Both the exact and asymptotic outage probabilities (OPs) of the IoT devices as well as the probability of successful detection (PoD) are derived for characterizing the communication and sensing (C&S) performances. As a further development, in the presence of the sensing requirements, a communication-centric power allocation (PA) problem is formulated for maximizing the sum rate of the IoT devices. Given the non-convexity of the problem, an alternating optimization algorithm is developed for finding a near-optimal PA. The simulation results confirm the accuracy of the analysis and demonstrate that: (1) The above non-ideal factors degrade the C&S performances; (2) The NO-T ISAC system considered outperforms pure ISAC in terms of both its OP and PoD; (3) Compared to other baseline PA schemes, the proposed algorithm maximizes the sum rates while meeting the sensing requirements.
Text
A_Non-orthogonal_UplinkDownlink_IoT_Solution_for_Next-generation_ISAC_Systems
- Accepted Manuscript
More information
Accepted/In Press date: 18 September 2023
e-pub ahead of print date: 22 September 2023
Keywords:
Hardware, Integrated sensing and communication, Internet of Things, Optimization, Performance evaluation, Resource management, Sensors, Signal to noise ratio, non-orthogonal transmission, performance analysis, power allocation
Identifiers
Local EPrints ID: 484769
URI: http://eprints.soton.ac.uk/id/eprint/484769
ISSN: 2327-4662
PURE UUID: aaa00ddd-27a5-499e-83e5-0ef9d3166bdd
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Date deposited: 21 Nov 2023 17:40
Last modified: 18 Mar 2024 02:36
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Contributors
Author:
Meng Liu
Author:
Minglei Yang
Author:
Fa Wei
Author:
Huifang Li
Author:
Zhaoming Zhang
Author:
Arumugam Nallanathan
Author:
Lajos Hanzo
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