• español
    • English
  • Login
  • español 
    • español
    • English
  • Tipos de Publicaciones
    • bookbook partconference objectdoctoral thesisjournal articlemagazinemaster thesispatenttechnical documentationtechnical report
Ver ítem 
  •   IMDEA Networks Principal
  • Ver ítem
  •   IMDEA Networks Principal
  • Ver ítem
JavaScript is disabled for your browser. Some features of this site may not work without it.

Self-organizing Dynamic Fractional Frequency Reuse on the uplink of OFDMA systems

Compartir
Ficheros
Self-organizing_Dynamic_Fractional_Frequency_-_2010_EN.pdf (2.223Mb)
Identificadores
URI: http://hdl.handle.net/20.500.12761/361
Metadatos
Mostrar el registro completo del ítem
Autor(es)
Rengarajan, Balaji; Stolyar, Alexander L.; Viswanathan, Harish
Fecha
2010-03-17
Resumen
Reverse link (or uplink) performance of cellular systems is becoming increasingly impor t ant with the emergence of new upl ink-bandwidth intensive applications such as Video Share [14], where end users upload video clips captured through their mobile devices. In particular, it is important to design the system to provide good us e r throughput in most of the coverage area, including at the cell edge. Soft fractional frequency reuse (FFR) is one of the techniques for mitigating inter-cell interference in cellular systems, leading to overall spectral efficiency enhancements and/or cell edge throughput improvements. We propose a novel algorithm tha t dynamically creates efficient soft FFR patterns on the upl ink of orthogonal frequency division multiple access (OFDMA) based cellular systems; this allows the system to "automatically" adapt to user traffic distribution and system layout. Our algorithm is based on systematically ascending towards a local maximum of the system-wide sum of user utilities, which depend on user throughputs. We show that this can be done in a semi-autonomous fashion: each sector does its resource allocation independently, with only an in frequent periodic exchange of interference costs between neighboring sectors. The proposed algorithm, called Multi-sector Gr adi ent for Upl ink (MGR-UL), allocates in-sector resources (power, frequency, time-slots to each user) in a way tha t simultaneously takes into a c count both the benefit to its "own" users ' utility and the cost of creating interference to neighboring sectors; along with tha t each sector estimates the cost of interference to itself. Extensive simulation results show tha t significant pe r formanc e benefits (up to 69% in total throughput in some typical scenarios) can be achieved with respect to a baseline approach. Simulations also show the automa tic formation of soft FFR patterns.
Materias
Q Science::Q Science (General)
Q Science::QA Mathematics::QA75 Electronic computers. Computer science
T Technology::T Technology (General)
T Technology::TA Engineering (General). Civil engineering (General)
T Technology::TK Electrical engineering. Electronics Nuclear engineering
Compartir
Ficheros
Self-organizing_Dynamic_Fractional_Frequency_-_2010_EN.pdf (2.223Mb)
Identificadores
URI: http://hdl.handle.net/20.500.12761/361
Metadatos
Mostrar el registro completo del ítem

Listar

Todo IMDEA NetworksPor fecha de publicaciónAutoresTítulosPalabras claveTipos de contenido

Mi cuenta

Acceder

Estadísticas

Ver Estadísticas de uso

Difusión

emailContacto person Directorio wifi Eduroam rss_feed Noticias
Iniciativa IMDEA Sobre IMDEA Networks Organización Memorias anuales Transparencia
Síguenos en:
Comunidad de Madrid

UNIÓN EUROPEA

Fondo Social Europeo

UNIÓN EUROPEA

Fondo Europeo de Desarrollo Regional

UNIÓN EUROPEA

Fondos Estructurales y de Inversión Europeos

© 2021 IMDEA Networks. | Declaración de accesibilidad | Política de Privacidad | Aviso legal | Política de Cookies - Valoramos su privacidad: ¡este sitio no utiliza cookies!