In this paper, we analyze the queueing performance in terms of loss rate of an OFDM (Orthogonal FrequencyDivision Multiplexing)/TDMA(Time Division Multiplex...

• Josemar A. Santos Jr
• Flávio G. C. Rocha
• Flávio H. T. Vieira

• Multifractal Traffic
• IEEE 802.16
• Policing algorithms
• Wireless Traffic

SBrT 2010

This paper presents an improved stochastic model for the generalized subband decomposition least-mean-square (GSD-LMS) algorithm. This algorithm is used as...

• Javier E. Kolodziej
• Orlando J. Tobias
• Rui Seara

• Averaging principle
• least-mean-square (LMS) algorithm
• mean weight behavior
• subband adaptive filters

SBrT 2010

In the context of object-based image compression, shape encoders that describe the contour of the objects, called chain codes, tend to be more efficient th...

• Fabiana O. P. Fernandes
• Willian G. de Almeida
• Flávia M. Freitas
• Abraham Alcaim

• shape encoding
• object-based image compression
• MPEG-4
• chain code
• grid cell

SBrT 2010

Dirac, a relevant new open wavelet-based video codec, has been released recently. The main contribution of this paper is an adequate performance evaluation...

• André F. de Araujo
• Yuzo Iano
• Rangel Arthur

• Dirac video codec
• H.264; Video Coding
• Vide Compression
• Wavelet-based video coding

SBrT 2010

In this paper modifications are investigated to a previously introduced Key Regeneration system used to obtain cryptographic keys from biometric data, spec...

• D. P. B. A. Camara
• V. C. da Rocha Jr.

• Biometrics
• cryptography
• error-correcting codes
• security

SBrT 2010