Performance analysis of active RIS-aided systems in the face of imperfect CSI and phase shift noise
Performance analysis of active RIS-aided systems in the face of imperfect CSI and phase shift noise
The linear minimal mean square error estimator for active reconfigurable intelligent surface (RIS)-aided wireless systems is formulated. Furthermore, based on the moment-matching method, we employ the Gamma distribution to approximate the distribution of the instantaneous received signal-to-interference-plus-noise ratio, and then derive the closed-form outage probability and ergodic channel capacity in the presence of realistic channel estimation errors, the thermal noise of RIS amplifiers and the RIS phase shift noise. Our theoretical analysis and simulation results show that the introduction of RIS amplifiers is equivalent to increasing of the transmit power, and also present the performance degradation resulting from the channel estimation error and the RIS phase noise.
Active reconfigurable intelligent surfaces (RIS), Channel estimation, Phase noise, Receivers, Signal to noise ratio, Symbols, Thermal noise, Wireless communication, channel estimation, ergodic channel capacity, outage probability
8140-8145
Li, Qingchao
69625501-d192-4a81-861f-f7ac9dd1e882
El-Hajjar, Mohammed
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Hemadeh, Ibrahim
11f27b54-e3da-4699-bc72-9a3508e76ccf
Jagyasi, Deepa
1b7026c1-3e50-4dad-89ea-a652a690f336
Shojaeifard, Arman
a2b98bfd-74d2-4b8c-aa8b-839b5a8c4e4c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
1 June 2023
Li, Qingchao
69625501-d192-4a81-861f-f7ac9dd1e882
El-Hajjar, Mohammed
3a829028-a427-4123-b885-2bab81a44b6f
Hemadeh, Ibrahim
11f27b54-e3da-4699-bc72-9a3508e76ccf
Jagyasi, Deepa
1b7026c1-3e50-4dad-89ea-a652a690f336
Shojaeifard, Arman
a2b98bfd-74d2-4b8c-aa8b-839b5a8c4e4c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Li, Qingchao, El-Hajjar, Mohammed, Hemadeh, Ibrahim, Jagyasi, Deepa, Shojaeifard, Arman and Hanzo, Lajos
(2023)
Performance analysis of active RIS-aided systems in the face of imperfect CSI and phase shift noise.
IEEE Transactions on Vehicular Technology, 72 (6), .
(doi:10.1109/TVT.2023.3239398).
Abstract
The linear minimal mean square error estimator for active reconfigurable intelligent surface (RIS)-aided wireless systems is formulated. Furthermore, based on the moment-matching method, we employ the Gamma distribution to approximate the distribution of the instantaneous received signal-to-interference-plus-noise ratio, and then derive the closed-form outage probability and ergodic channel capacity in the presence of realistic channel estimation errors, the thermal noise of RIS amplifiers and the RIS phase shift noise. Our theoretical analysis and simulation results show that the introduction of RIS amplifiers is equivalent to increasing of the transmit power, and also present the performance degradation resulting from the channel estimation error and the RIS phase noise.
Text
Performance Analysis of Active RIS-aided Systems in the Face of Imperfect CSI and Phase Shift Noise
- Accepted Manuscript
More information
Accepted/In Press date: 20 January 2023
e-pub ahead of print date: 24 January 2023
Published date: 1 June 2023
Additional Information:
Funding Information:
The work of Lajos Hanzo was supported by Engineering and Physical Sciences Research Council under Grants EP/W016605/1 and EP/X01228X/1 and in part by European Research Council’s Advanced Fellow Grant QuantCom under Grant 789028.
Publisher Copyright:
© 2023 IEEE.
Keywords:
Active reconfigurable intelligent surfaces (RIS), Channel estimation, Phase noise, Receivers, Signal to noise ratio, Symbols, Thermal noise, Wireless communication, channel estimation, ergodic channel capacity, outage probability
Identifiers
Local EPrints ID: 474653
URI: http://eprints.soton.ac.uk/id/eprint/474653
ISSN: 0018-9545
PURE UUID: 26a67069-ce6e-4d10-9b09-bac3d2a333e8
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Date deposited: 28 Feb 2023 17:49
Last modified: 18 Mar 2024 03:59
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Contributors
Author:
Qingchao Li
Author:
Mohammed El-Hajjar
Author:
Ibrahim Hemadeh
Author:
Deepa Jagyasi
Author:
Arman Shojaeifard
Author:
Lajos Hanzo
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