Many continuous wavelets are defined in the frequency domain and do not have analytical expressions in the time domain. Meyer wavelet is ordinarily defined...

• Victor Vermehren Valenzuela
• Hélio Magalhães de Oliveira

• Meyer wavelets
• multiresolution analysis
• scale function

SBrT 2015

A new test called rotation search is proposed for user identification and cryptographic key regeneration in systems employing a digital representation o...

• Guilherme Nunes Melo
• Valdemar C. da Rocha Jr.
• José S. Lemos-Neto

• Iris code
• biometry
• coding
• authentication

SBrT 2015

This paper evaluates the relevance of using a fi- nite state Markov channel, more specifically the Gilbert-El liot channel (GEC) in order to reproduce the...

• Igor Moreira
• Cecilio Pimentel

• Finite-state Markovian channels
• frequency selective fading
• parameters estimation
• error probability.

SBrT 2015

This paper discusses the project of capacitive cou- plers for Power Line Communications (PLC) in the range frequency of 9 kHz to 500 kHz and 1,7 to 500 MHz...

• Lu ́ıs Guilherme da S. Costa
• Ant ˆonio Angelo M. Picorone
• An t ˆonio Carlos M. de Queiroz
• Vin ́ıcius Lagrota R. da Costa
• Mois ́es V. Ribeiro

• Power Line Communications
• coupler
• Microstrip

SBrT 2015

This paper shows the study about antennas dipole of graphene with different dimensions being excited by voltage source. For that it will be used the soft...

• Felipe Bamberg Soares
• Rodrigo G Azevedo
• Karlo Q. da Costa

• Dipolos de grafeno
• radiação na faixa do terahertz
• COMSOL
• antenas

SBrT 2015