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Analyse de l'efficacité spectrale du MIMO massif sans cellule en liaison descendante
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ISBN10: 6206645088
ISBN13: 9786206645085
Publisher: Ed Notre Savior
Pages: 112
Weight: 0.39
Height: 0.27 Width: 6.00 Depth: 9.00
Language: French
ISBN13: 9786206645085
Publisher: Ed Notre Savior
Pages: 112
Weight: 0.39
Height: 0.27 Width: 6.00 Depth: 9.00
Language: French
Les progrès rapides des technologies de communication connectent le monde plus rapidement que jamais. Toutefois, cette évolution a entraîné une pénurie de spectre de fréquences, car la largeur de bande de communication disponible est limitée. Pour maximiser les taux de transmission de données tout en utilisant une largeur de bande fixe, un mécanisme est nécessaire pour améliorer l'efficacité spectrale. Les systèmes massifs distribués à entrées et sorties multiples (MIMO) impliquent le déploiement d'un grand nombre d'antennes de transmission autour de l'équipement de l'utilisateur (UE) pour atteindre cet objectif. Toutefois, dans les systèmes cellulaires MIMO massifs, les interférences de signaux autour des bords des cellules peuvent poser un problème. Pour résoudre les problèmes d'interférence autour des bords des cellules dans le MIMO massif cellulaire, le MIMO massif sans cellule a été introduit, qui incorpore à la fois les principes du MIMO massif et du MIMO distribué. La MIMO massive sans cellule est avantageuse car elle place les utilisateurs plus près des points d'accès (AP), ce qui permet d'améliorer l'efficacité spectrale. Bien que la MIMO massive sans cellule améliore l'efficacité spectrale, des techniques de traitement du signal telles que le précodage sont nécessaires pour la maximiser davantage.
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