Two-step user pairing for OFDM-based cooperative NOMA systems
In this letter, we propose a two-step user-paring scheme for an orthogonal frequency-division multiplexing (OFDM)-based cooperative non-orthogonal multiple-access (NOMA) system where far users cannot communicate with the base station directly. The first step is for allocating near users, and the sec...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/160909 |
| _version_ | 1826124608257916928 |
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| author | Cheng, Yanyu Li, Kwok Hung Teh, Kah Chan Luo, Sheng Wang, Wei |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Cheng, Yanyu Li, Kwok Hung Teh, Kah Chan Luo, Sheng Wang, Wei |
| author_sort | Cheng, Yanyu |
| collection | NTU |
| description | In this letter, we propose a two-step user-paring scheme for an orthogonal frequency-division multiplexing (OFDM)-based cooperative non-orthogonal multiple-access (NOMA) system where far users cannot communicate with the base station directly. The first step is for allocating near users, and the second step is for allocating far users. To evaluate the performance of the proposed scheme, we derive the closed-form expression for the upper bound of the outage probability, and then obtain the achievable diversity gain. Numerical results show that the proposed scheme can achieve the optimal diversity gain confirmed by exhaustive search. |
| first_indexed | 2024-10-01T06:23:29Z |
| format | Journal Article |
| id | ntu-10356/160909 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:23:29Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1609092022-08-05T08:23:53Z Two-step user pairing for OFDM-based cooperative NOMA systems Cheng, Yanyu Li, Kwok Hung Teh, Kah Chan Luo, Sheng Wang, Wei School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering User Pairing Outage Probability In this letter, we propose a two-step user-paring scheme for an orthogonal frequency-division multiplexing (OFDM)-based cooperative non-orthogonal multiple-access (NOMA) system where far users cannot communicate with the base station directly. The first step is for allocating near users, and the second step is for allocating far users. To evaluate the performance of the proposed scheme, we derive the closed-form expression for the upper bound of the outage probability, and then obtain the achievable diversity gain. Numerical results show that the proposed scheme can achieve the optimal diversity gain confirmed by exhaustive search. 2022-08-05T08:23:53Z 2022-08-05T08:23:53Z 2020 Journal Article Cheng, Y., Li, K. H., Teh, K. C., Luo, S. & Wang, W. (2020). Two-step user pairing for OFDM-based cooperative NOMA systems. IEEE Communications Letters, 24(4), 903-906. https://dx.doi.org/10.1109/LCOMM.2020.2964665 1089-7798 https://hdl.handle.net/10356/160909 10.1109/LCOMM.2020.2964665 2-s2.0-85083158413 4 24 903 906 en IEEE Communications Letters © 2020 IEEE. All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering User Pairing Outage Probability Cheng, Yanyu Li, Kwok Hung Teh, Kah Chan Luo, Sheng Wang, Wei Two-step user pairing for OFDM-based cooperative NOMA systems |
| title | Two-step user pairing for OFDM-based cooperative NOMA systems |
| title_full | Two-step user pairing for OFDM-based cooperative NOMA systems |
| title_fullStr | Two-step user pairing for OFDM-based cooperative NOMA systems |
| title_full_unstemmed | Two-step user pairing for OFDM-based cooperative NOMA systems |
| title_short | Two-step user pairing for OFDM-based cooperative NOMA systems |
| title_sort | two step user pairing for ofdm based cooperative noma systems |
| topic | Engineering::Electrical and electronic engineering User Pairing Outage Probability |
| url | https://hdl.handle.net/10356/160909 |
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