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Sociedade Brasileira de Telecomunicações

2010 - VII International Telecommunications Symposium



Ascending chain of semigroup rings and encoding

Let B be any finite commutative ring with identity. · · · ⊂ B[X; 1ak Z0] · · · ⊂ B[X; a12 Z0] ⊂ B[X; a1 Z0], where a ∈ {2, 3, 5, 7, · · ·}, k ≥ 1, is the des...

SBrT 2010


A speech database for the study of Lombard effect in Brazilian Portuguese

The Lombard effect is related to the change in the way people speak in noisy environments in order to compensate the degradation of the audio signal. There...

SBrT 2010


Assessing Strategies to Remove Back-to-Front Interference in Color Documents

Whenever a document is written on both sides of translucent paper there is a back-to-front interference, also known as bleeding or show-through. In the lit...

SBrT 2010


ASSESSING THE OCR DEGRADATION IN THE GENERATION OF JPEG, PNG, AND TIFF FILES FROM ADOBE PDF

Adobe Portable Document Format is de facto standard today due to its widespread use. One of the features of Adobe pdf is that it allows exporting document...

SBrT 2010


A Traffic Policing Mechanism for Wimax Systems Based on Multifractal Modeling

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

SBrT 2010