Hybrid beamformer exploiting multistream per user transmission for millimeter-wave NOMA communications
This treatise investigates multistream hybrid beamforming (HBF) for a millimeter-wave non-orthogonal multiple access (NOMA) system deployed in a downlink of an urban microcell environment. Maximization problem is developed to optimize sum-rate. For the sake of ensuring high correlation of users'...
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| Format: | Article |
| Language: | English |
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Institute of Electrical and Electronics Engineers Inc.
2022
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| Online Access: | http://eprints.utm.my/104362/1/LeowCheeYen2022_HybridBeamformerExploitingMultistreamperUser.pdf |
| _version_ | 1796867642244464640 |
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| author | Badrudeen, Abdulahi Abiodun Leow, Chee Yen Won, Seunghwan |
| author_facet | Badrudeen, Abdulahi Abiodun Leow, Chee Yen Won, Seunghwan |
| author_sort | Badrudeen, Abdulahi Abiodun |
| collection | ePrints |
| description | This treatise investigates multistream hybrid beamforming (HBF) for a millimeter-wave non-orthogonal multiple access (NOMA) system deployed in a downlink of an urban microcell environment. Maximization problem is developed to optimize sum-rate. For the sake of ensuring high correlation of users' channels, user's clustering and ordering are based on the angle of arrivals and users' channel-weights, respectively. An optimized analog combiner of each user is obtained from the first N {s} column vectors of the left unitary matrix derived from the singular value decomposition of the channel of each user. Analog beamformer is matched to the phase of the strong users ' composite intermediate analog channel to maximize the beamforming gain. Both the analog combiner and precoder for sub-connected structure (SCS) are formulated via a novel dominant sub-array matrix elements' extractor. Conventional zero-forcing processing is contemplated for digital precoding. Memory space complexity is evaluated to corroborate the simplicity of the proposed schemes' computational complexity. Results obtained from the simulation exhibit that HBF-NOMA attain superior sum-rate than HBF-orthogonal multiple access and conventional multiuser schemes in line of sight link. Lastly, the proposed SCS-HBF-NOMA precoding scheme performs higher than fully connected counterpart in terms of energy efficiency. |
| first_indexed | 2024-03-05T21:30:20Z |
| format | Article |
| id | utm.eprints-104362 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T21:30:20Z |
| publishDate | 2022 |
| publisher | Institute of Electrical and Electronics Engineers Inc. |
| record_format | dspace |
| spelling | utm.eprints-1043622024-02-04T09:34:52Z http://eprints.utm.my/104362/ Hybrid beamformer exploiting multistream per user transmission for millimeter-wave NOMA communications Badrudeen, Abdulahi Abiodun Leow, Chee Yen Won, Seunghwan TK Electrical engineering. Electronics Nuclear engineering This treatise investigates multistream hybrid beamforming (HBF) for a millimeter-wave non-orthogonal multiple access (NOMA) system deployed in a downlink of an urban microcell environment. Maximization problem is developed to optimize sum-rate. For the sake of ensuring high correlation of users' channels, user's clustering and ordering are based on the angle of arrivals and users' channel-weights, respectively. An optimized analog combiner of each user is obtained from the first N {s} column vectors of the left unitary matrix derived from the singular value decomposition of the channel of each user. Analog beamformer is matched to the phase of the strong users ' composite intermediate analog channel to maximize the beamforming gain. Both the analog combiner and precoder for sub-connected structure (SCS) are formulated via a novel dominant sub-array matrix elements' extractor. Conventional zero-forcing processing is contemplated for digital precoding. Memory space complexity is evaluated to corroborate the simplicity of the proposed schemes' computational complexity. Results obtained from the simulation exhibit that HBF-NOMA attain superior sum-rate than HBF-orthogonal multiple access and conventional multiuser schemes in line of sight link. Lastly, the proposed SCS-HBF-NOMA precoding scheme performs higher than fully connected counterpart in terms of energy efficiency. Institute of Electrical and Electronics Engineers Inc. 2022 Article PeerReviewed application/pdf en http://eprints.utm.my/104362/1/LeowCheeYen2022_HybridBeamformerExploitingMultistreamperUser.pdf Badrudeen, Abdulahi Abiodun and Leow, Chee Yen and Won, Seunghwan (2022) Hybrid beamformer exploiting multistream per user transmission for millimeter-wave NOMA communications. IEEE Access, 10 (NA). pp. 23074-23085. ISSN 2169-3536 http://dx.doi.org/10.1109/ACCESS.2022.3152537 DOI : 10.1109/ACCESS.2022.3152537 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Badrudeen, Abdulahi Abiodun Leow, Chee Yen Won, Seunghwan Hybrid beamformer exploiting multistream per user transmission for millimeter-wave NOMA communications |
| title | Hybrid beamformer exploiting multistream per user transmission for millimeter-wave NOMA communications |
| title_full | Hybrid beamformer exploiting multistream per user transmission for millimeter-wave NOMA communications |
| title_fullStr | Hybrid beamformer exploiting multistream per user transmission for millimeter-wave NOMA communications |
| title_full_unstemmed | Hybrid beamformer exploiting multistream per user transmission for millimeter-wave NOMA communications |
| title_short | Hybrid beamformer exploiting multistream per user transmission for millimeter-wave NOMA communications |
| title_sort | hybrid beamformer exploiting multistream per user transmission for millimeter wave noma communications |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| url | http://eprints.utm.my/104362/1/LeowCheeYen2022_HybridBeamformerExploitingMultistreamperUser.pdf |
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