Semi-integrated-sensing-and-communication (Semi-ISaC): from OMA to NOMA
Semi-integrated-sensing-and-communication (Semi-ISaC): from OMA to NOMA
The new concept of semi-integrated-sensing-andcommunication (Semi-ISaC) is proposed for next-generation cellular networks. Compared to the state-of-the-art, where the total bandwidth is used for integrated sensing and communication (ISaC), the proposed Semi-ISaC framework provides more freedom as it allows that a portion of the bandwidth is exclusively used for either wireless communication or radar detection, while the rest is for ISaC transmission. To enhance the bandwidth efficiency (BE), we investigate the evolution of Semi-ISaC networks from orthogonal multiple access (OMA) to non-orthogonal multiple access (NOMA). First, we evaluate the performance of an OMA-based Semi-ISaC network. As for the communication signals, we investigate both the outage probability (OP) and the ergodic rate. As for the radar echoes, we characterize the ergodic radar estimation information rate
(REIR). Then, we investigate the performance of a NOMA-based Semi-ISaC network, including the OP and the ergodic rate for communication signals and the ergodic REIR for radar echoes. The diversity gains of OP and the high signal-to-noise ratio (SNR)
slopes of the ergodic REIR are also evaluated as insights. The analytical results indicate that: 1) Under a two-user NOMA-based Semi-ISaC scenario, the diversity order of the near-user is equal to the coefficient of the Nakagami-m fading channels (m), while
that of the far-user is zero; and 2) The high-SNR slope for the ergodic REIR is based on the ratio of the radar signal’s duty cycle to the pulse duration. Our simulation results show that: 1) Semi-ISaC has better channel capacity than the conventional
ISaC; and 2) The NOMA-based Semi-ISaC has better channel capacity than the OMA-based Semi-ISaC.
Bandwidth, Ions, NOMA, Radar, Semi-integrated-sensing-and-communication, Sensors, Spaceborne radar, Wireless communication, ergodic radar estimation information rate, non-orthogonal multiple access, orthogonal multiple access, outage probability
1878-1893
Zhang, Chao
44cf92aa-d613-4e92-81a8-5fe6da9b81a2
Yi, Wenqiang
d8825d62-b154-44cf-a72f-db809549a826
Liu, Yuanwei
2767c2bc-6199-4106-ac28-81c3dadcfa29
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
1 April 2023
Zhang, Chao
44cf92aa-d613-4e92-81a8-5fe6da9b81a2
Yi, Wenqiang
d8825d62-b154-44cf-a72f-db809549a826
Liu, Yuanwei
2767c2bc-6199-4106-ac28-81c3dadcfa29
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Zhang, Chao, Yi, Wenqiang, Liu, Yuanwei and Hanzo, Lajos
(2023)
Semi-integrated-sensing-and-communication (Semi-ISaC): from OMA to NOMA.
IEEE Transactions on Communications, 71 (4), .
(doi:10.1109/TCOMM.2023.3241940).
Abstract
The new concept of semi-integrated-sensing-andcommunication (Semi-ISaC) is proposed for next-generation cellular networks. Compared to the state-of-the-art, where the total bandwidth is used for integrated sensing and communication (ISaC), the proposed Semi-ISaC framework provides more freedom as it allows that a portion of the bandwidth is exclusively used for either wireless communication or radar detection, while the rest is for ISaC transmission. To enhance the bandwidth efficiency (BE), we investigate the evolution of Semi-ISaC networks from orthogonal multiple access (OMA) to non-orthogonal multiple access (NOMA). First, we evaluate the performance of an OMA-based Semi-ISaC network. As for the communication signals, we investigate both the outage probability (OP) and the ergodic rate. As for the radar echoes, we characterize the ergodic radar estimation information rate
(REIR). Then, we investigate the performance of a NOMA-based Semi-ISaC network, including the OP and the ergodic rate for communication signals and the ergodic REIR for radar echoes. The diversity gains of OP and the high signal-to-noise ratio (SNR)
slopes of the ergodic REIR are also evaluated as insights. The analytical results indicate that: 1) Under a two-user NOMA-based Semi-ISaC scenario, the diversity order of the near-user is equal to the coefficient of the Nakagami-m fading channels (m), while
that of the far-user is zero; and 2) The high-SNR slope for the ergodic REIR is based on the ratio of the radar signal’s duty cycle to the pulse duration. Our simulation results show that: 1) Semi-ISaC has better channel capacity than the conventional
ISaC; and 2) The NOMA-based Semi-ISaC has better channel capacity than the OMA-based Semi-ISaC.
Text
Semi-Integrated-Sensing-and-Communication_(Semi-ISaC)_From_OMA_to_NOMA
- Accepted Manuscript
More information
Accepted/In Press date: 26 January 2023
e-pub ahead of print date: 3 February 2023
Published date: 1 April 2023
Additional Information:
Lajos Hanzo would like to acknowledge the financial support of the Engineering and Physical Sciences Research Council projects EP/W016605/1 and EP/X01228X/1 as well as of the European Research Council’s Advanced Fellow Grant QuantCom (Grant No. 789028).
Keywords:
Bandwidth, Ions, NOMA, Radar, Semi-integrated-sensing-and-communication, Sensors, Spaceborne radar, Wireless communication, ergodic radar estimation information rate, non-orthogonal multiple access, orthogonal multiple access, outage probability
Identifiers
Local EPrints ID: 474916
URI: http://eprints.soton.ac.uk/id/eprint/474916
ISSN: 0090-6778
PURE UUID: 4161bf96-1a77-459b-82e8-8120f9000936
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Date deposited: 07 Mar 2023 17:31
Last modified: 18 Mar 2024 02:36
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Contributors
Author:
Chao Zhang
Author:
Wenqiang Yi
Author:
Yuanwei Liu
Author:
Lajos Hanzo
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