Joint SDMA and Power-Domain NOMA System for Multi-User Mm-Wave Communications
| Autor: | Israa Khaled, Bachar Elhasssan, Ammar El Falou, Charlotte Langlais, Michel Jezequel |
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| Přispěvatelé: | Département Electronique (IMT Atlantique - ELEC), IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Lab-STICC_IMTA_CACS_IAS, Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT), Faculty of Engineering [Lebanese University] (ULFG), Lebanese University [Beirut] (LU) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Beamforming
Computer science MIMO Throughput Space-division multiple access Interference (wave propagation) Multi-user Multi-user MIMO [SPI.TRON]Engineering Sciences [physics]/Electronics Antenna array [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI] millimeter- wave antenna array Electronic engineering Path loss [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing multi-user MIMO Communication channel power-domain NOMA |
| Zdroj: | IWCMC 2020 : International Wireless Communications and Mobile Computing Conference IWCMC 2020 : International Wireless Communications and Mobile Computing Conference, Jun 2020, Limassol, Cyprus. ⟨10.1109/IWCMC48107.2020.9148204⟩ IWCMC |
| DOI: | 10.1109/IWCMC48107.2020.9148204⟩ |
| Popis: | International audience; Digital beamsteering (DBS) is an appealing technique to overcome the severe millimeter-wave path loss, with less complexity and less channel feedback. In multiuser systems, DBS generates a beam toward each user. However, in congested cells, such a system suffers from high inter-user interference causing by the neighboring beams. In this paper, a new approach of space division multiple access (SDMA) with power-domain non-orthogonal multiple access (PD-NOMA) is considered for millimeter-wave channel to significantly reduce the inter-user interference and thus enhance the overall throughput. The proposed scheme is designed by selecting the users located at the same direction to share one beam, in which PD-NOMA multiplexes the users in power domain. The proposed user clustering method built upon an interference metric, and followed by a fixed power allocation method based on the received power, makes possible the design of a low-feedback NOMA-DBS scheme. Simulation results, based on the New York university mm-wave simulator, show that the multiuser MIMO system can achieve higher sum-rate with our proposed joint SDMA and PD-NOMA scheme, with respect to only SDMA (e.g., up to 20 bps/Hz rate gain for 45 users in the cell). |
| Databáze: | OpenAIRE |
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