Memorias de investigación
Communications at congresses:
Efficiency improvement of HF communications using cognitive radio principles
Year:2012
Research Areas
  • Processing and signal analysis
Information
Abstract
Cognitive Radio principles can be applied to HF communications to make a more efficient use of the extremely scarce spectrum. In this contribution we focus on analyzing the usage of the available channels done by the legacy users, which are regarded as primary users since they are allowed to transmit without resorting any smart procedure, and consider the possibilities for our stations -over the HFDVL (HF Data+Voice Link) architecture- to participate as secondary users. Our goal is to enhance an efficient use of the HF band by detecting the presence of uncoordinated primary users and avoiding collisions with them while transmitting in different HF channels using our broad-band HF transceiver. A model of the primary user activity dynamics in the HF band is developed in this work. It is based on Hidden Markov Models (HMM) which are a powerful tool for modelling stochastic random processes, and is trained with real measurements from the 14 MHz band.
International
Si
Congress
12th International Conference on Ionospheric Radio Systems & Techniques IRST 2012
960
Place
York, UK
Reviewers
Si
ISBN/ISSN
978-1-84919-623-9
Start Date
15/05/2012
End Date
17/05/2012
From page
1
To page
5
Actas de IRST 2012
Participants
  • Autor: Laura Melián Gutiérrez Instituto para el Desarrollo Tecnológico y la Innovación en Comunicaciones (IDeTIC). Universidad de Las Palmas de G.C.
  • Autor: Santiago Zazo Bello UPM
  • Autor: Jose Luis Blanco Murillo UPM
  • Autor: Iván Pérez Álvarez Instituto para el Desarrollo Tecnológico y la Innovación en Comunicaciones (IDeTIC). Universidad de Las Palmas de G.C.
  • Autor: A. García Rodriguez Instituto para el Desarrollo Tecnológico y la Innovación en Comunicaciones (IDeTIC). Universidad de Las Palmas de G.C.
  • Autor: Baltasar Pérez Díaz Instituto para el Desarrollo Tecnológico y la Innovación en Comunicaciones (IDeTIC). Universidad de Las Palmas de G.C.
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Aplicaciones del Procesado de Señal (GAPS)
  • Departamento: Señales, Sistemas y Radiocomunicaciones