NOMA Based Cooperative Relaying Strategy for Underwater Acoustic Sensor Networks Under Imperfect SIC and Imperfect CSI: A Comprehensive Analysis
In this paper, we propose non-orthogonal multiple access based cooperative relaying strategy (NOMA-CRS) for underwater acoustic sensor networks (UASNs). We analyse the performance of NOMA-CRS for both shallow and deep water scenarios, under imperfect channel state information (I-CSI) as well as impe...
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| Format: | Article |
| Language: | English |
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IEEE
2021-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9359748/ |
| _version_ | 1818737379246080000 |
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| author | Veerapu Goutham V. P. Harigovindan |
| author_facet | Veerapu Goutham V. P. Harigovindan |
| author_sort | Veerapu Goutham |
| collection | DOAJ |
| description | In this paper, we propose non-orthogonal multiple access based cooperative relaying strategy (NOMA-CRS) for underwater acoustic sensor networks (UASNs). We analyse the performance of NOMA-CRS for both shallow and deep water scenarios, under imperfect channel state information (I-CSI) as well as imperfect successive interference cancellation (I-SIC). We derive mathematical expressions for ergodic rate, outage probability as well as the energy efficiency of NOMA-CRS in UASNs by considering the underwater specific characteristics, such as distance-dependent usable bandwidth, acoustic spreading, propagation loss, and fading effects. We compare the performance of NOMA-CRS with the widely used decode-and-forward based CRS in the UASNs. From the results, it is evident that NOMA-CRS can achieve significant improvement in ergodic sum rate and energy efficiency. But the outage performance is slightly degraded for the proposed scheme. Our results show that I-CSI and I-SIC have a significant impact on the performance of the NOMA-CRS. We also investigate the impact of relay position, wind speed as well as shipping activities on the performance of NOMA-CRS under the realistic underwater scenario. Results show that high-speed winds and high shipping activities severely degrade the performance of ergodic sum rate of the NOMA-CRS. Implementation of NOMA-CRS requires CSI at the transmitter. However, acquiring perfect CSI at the transmitter is a challenging task in time-varying multi-path underwater acoustic channels. As a solution, we also propose space-time block coded NOMA-CRS (STBC-NOMA-CRS) for UASNs, which can be implemented without CSI at the transmitter. Extensive simulation studies are conducted to corroborate the analytical findings. |
| first_indexed | 2024-12-18T00:52:06Z |
| format | Article |
| id | doaj.art-91784f2eba3348568cc30732554c5a89 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-18T00:52:06Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-91784f2eba3348568cc30732554c5a892022-12-21T21:26:38ZengIEEEIEEE Access2169-35362021-01-019328573287210.1109/ACCESS.2021.30607849359748NOMA Based Cooperative Relaying Strategy for Underwater Acoustic Sensor Networks Under Imperfect SIC and Imperfect CSI: A Comprehensive AnalysisVeerapu Goutham0https://orcid.org/0000-0001-9277-465XV. P. Harigovindan1https://orcid.org/0000-0002-9987-217XDepartment of Electronics and Communication Engineering, National Institute of Technology Puducherry, Karaikal, IndiaDepartment of Electronics and Communication Engineering, National Institute of Technology Puducherry, Karaikal, IndiaIn this paper, we propose non-orthogonal multiple access based cooperative relaying strategy (NOMA-CRS) for underwater acoustic sensor networks (UASNs). We analyse the performance of NOMA-CRS for both shallow and deep water scenarios, under imperfect channel state information (I-CSI) as well as imperfect successive interference cancellation (I-SIC). We derive mathematical expressions for ergodic rate, outage probability as well as the energy efficiency of NOMA-CRS in UASNs by considering the underwater specific characteristics, such as distance-dependent usable bandwidth, acoustic spreading, propagation loss, and fading effects. We compare the performance of NOMA-CRS with the widely used decode-and-forward based CRS in the UASNs. From the results, it is evident that NOMA-CRS can achieve significant improvement in ergodic sum rate and energy efficiency. But the outage performance is slightly degraded for the proposed scheme. Our results show that I-CSI and I-SIC have a significant impact on the performance of the NOMA-CRS. We also investigate the impact of relay position, wind speed as well as shipping activities on the performance of NOMA-CRS under the realistic underwater scenario. Results show that high-speed winds and high shipping activities severely degrade the performance of ergodic sum rate of the NOMA-CRS. Implementation of NOMA-CRS requires CSI at the transmitter. However, acquiring perfect CSI at the transmitter is a challenging task in time-varying multi-path underwater acoustic channels. As a solution, we also propose space-time block coded NOMA-CRS (STBC-NOMA-CRS) for UASNs, which can be implemented without CSI at the transmitter. Extensive simulation studies are conducted to corroborate the analytical findings.https://ieeexplore.ieee.org/document/9359748/Cooperative relaying strategyergodic rateenergy efficiencyoutage probabilitypower-domain non-orthogonal multiple accessspace-time block codes |
| spellingShingle | Veerapu Goutham V. P. Harigovindan NOMA Based Cooperative Relaying Strategy for Underwater Acoustic Sensor Networks Under Imperfect SIC and Imperfect CSI: A Comprehensive Analysis IEEE Access Cooperative relaying strategy ergodic rate energy efficiency outage probability power-domain non-orthogonal multiple access space-time block codes |
| title | NOMA Based Cooperative Relaying Strategy for Underwater Acoustic Sensor Networks Under Imperfect SIC and Imperfect CSI: A Comprehensive Analysis |
| title_full | NOMA Based Cooperative Relaying Strategy for Underwater Acoustic Sensor Networks Under Imperfect SIC and Imperfect CSI: A Comprehensive Analysis |
| title_fullStr | NOMA Based Cooperative Relaying Strategy for Underwater Acoustic Sensor Networks Under Imperfect SIC and Imperfect CSI: A Comprehensive Analysis |
| title_full_unstemmed | NOMA Based Cooperative Relaying Strategy for Underwater Acoustic Sensor Networks Under Imperfect SIC and Imperfect CSI: A Comprehensive Analysis |
| title_short | NOMA Based Cooperative Relaying Strategy for Underwater Acoustic Sensor Networks Under Imperfect SIC and Imperfect CSI: A Comprehensive Analysis |
| title_sort | noma based cooperative relaying strategy for underwater acoustic sensor networks under imperfect sic and imperfect csi a comprehensive analysis |
| topic | Cooperative relaying strategy ergodic rate energy efficiency outage probability power-domain non-orthogonal multiple access space-time block codes |
| url | https://ieeexplore.ieee.org/document/9359748/ |
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