Sensoriamento de Espectro de Sistemas TETRA por meio de análise tempo-frequência
(Spectrum Sensing of TETRA Systems through Time-Frequency Analysis)
Wilson Diniz Wellisch (email@example.com)1, Andre Noll Barreto (firstname.lastname@example.org)2
1Agência Nacional de Telecomunicações2Universidade de Brasília
This paper appears in: Revista IEEE América Latina
Publication Date: May 2013
Volume: 11, Issue: 3
In a cognitive radio system where the primary user is a TDMA based system, spectrum sensing must be able to identify the occupation of both a frequency band and a time slot. Whereas this can be done by scanning each narrowband frequency channel in turns, we can also perform a wideband sampling of the transmitted signal, and identify simultaneously the occupied frequency bands and time slots by means of a time-frequency analysis. In this paper we propose the use of this approach, using a spectrogram, in order to sense the spectrum and determine the occupied channels of a TETRA system.
spectrum sensing, time-frequency analysis
Documents that cite this
This function is not implemented yet.
[PDF Full-Text (848)]