Inicio > > Informática: cuestiones generales > MIMO-OFDM et les imperfections induites par le matériel RF dans la 4G
MIMO-OFDM et les imperfections induites par le matériel RF dans la 4G

MIMO-OFDM et les imperfections induites par le matériel RF dans la 4G

Désiré GUEL / Issa YAMEOGO

55,72 €
IVA incluido
Disponible
Editorial:
KS OmniScriptum Publishing
Año de edición:
2024
Materia
Informática: cuestiones generales
ISBN:
9786206719878
55,72 €
IVA incluido
Disponible

Selecciona una librería:

  • Librería Samer Atenea
  • Librería Aciertas (Toledo)
  • Kálamo Books
  • Librería Perelló (Valencia)
  • Librería Elías (Asturias)
  • Donde los libros
  • Librería Kolima (Madrid)
  • Librería Proteo (Málaga)

Nous avons évalué les effets de non-linéarités de l’amplificateur de puissance sur les performances du réseau mobile 4G/LTE. Les résultats ont été obtenus en simulant le canal PUSCH avec le modèle de Saleh comme amplificateur. Cette évaluation a été effectuée sur la liaison montante car ce canal est l’un des principaux canaux de transmission des flux de communication. Cela nous a permis d’analyser les effets du HPA (High Power Amplifier) sur le débit ainsi que sur le spectre. En effet, lorsqu’on augmente le nombre d’antennes à la réception on améliore les performances du système, le signal est capté efficacement avec moins de bruit, le SNR est augmenté d’où une réduction des erreurs de transmission. En conséquence l’utilisation du système MIMO améliore les performances de communication. Cependant lorsque l’HPA fonctionne proche de sa zone de saturation les performances du PUSCH se détériore dû à la saturation de l’amplificateur qui entraîne une introduction des non-linéarités ce qui altère le signal donc une diminution du débit de données du PUSCH. Il est important de choisir judicieusement la valeur de l’IBO (Input Back Off) pour optimiser les performances du PUSCH.

Artículos relacionados

  • Interview with Jeffery Khoury, Bringing Telemedicine to the People
    Richard G Lowe Jr
    Did you know you can consult with a medical specialist over your smartphone from the comfort of your own home? Imagine speaking to a highly-trained and accredited doctor about whatever is ailing you from virtually anywhere in the world.Thanks to a young entrepreneur named Jeffery Khoury, you can get the advice you need from a pool of medical specialists without waiting in a doc...
  • IT Consulting Secrets
    Carl A Katz
    This book is for IT consultants of all experience levels and the content is relevant to any IT support business model from managed services (MSP) to break/fix. The author has methodically compiled these strategies and this information from over sixteen years of experience working in the IT support field at the small and medium sized business and enterprise levels. ...
    Disponible

    29,41 €

  • Modeling, Analysis, and Applications in Metaheuristic Computing
    Peng-Yeng Yin
    The engineering and business problems the world faces today have become more impenetrable and unstructured, making the design of a satisfactory problem-specific algorithm nontrivial. Modeling, Analysis, and Applications in Metaheuristic Computing: Advancements and Trends is a collection of the latest developments, models, and applications within the transdisciplinary fields rel...
  • Knowledge Management and Drivers of Innovation in Services Industries
    Knowledge Management is concerned with all aspects of eliciting, acquiring, modelling, and managing knowledge. Application of knowledge resources successfully helps the organization to deliver creative products and services. Especially in service business, service job experience and information about the customer, as well as the installed site equipment, are key factors to deli...
  • Current Trends and Future Practices for Digital Literacy and Competence
    Antonio Cartelli
    Being a digital citizen has transformed from a process of familiarizing ones’ self with terminology and techniques to a full-time responsibility in the hands of any who want to stay abreast of the latest technological change in their respective field. Current Trends and Future Practices for Digital Literacy and Competence offers a look at the latest research within digital lite...
  • Human Rights and Risks in the Digital Era
    Globalization, along with its digital and information communication technology counterparts, including the Internet and cyberspace, may signify a whole new era for human rights, characterized by new tensions, challenges, and risks for human rights, as well as new opportunities. Human Rights and Risks in the Digital Era: Globalization and the Effects of Information Technologies ...