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Sociedade Brasileira de Telecomunicações

2010 - VII International Telecommunications Symposium



Control in Trellis Codes produced by Finite State Machines with Information Group Zp

A trellis code is the image of a signal mapper from a time invariant group code produced by a Finite State Machine, FSM. Group codes can be described as dy...

SBrT 2010


Controlling the Peak-to-Average Power Ratio in the Downlink of WiMAX Systems

It is well known that one of the main implementation issues in multicarrier modulation schemes, like OFDM, is their high peak-to-average power ratio (PAPR)....

SBrT 2010


Correcting Erasures and Errors in Random Network Coding

Rank-metric codes in matrix representation are used by Koetter, Kschischang, Silva in their theory of random network coding. They showed that the decoding pr...

SBrT 2010


Cross-Layer Interaction Between the Application, Routing and MAC Layers for Wireless Sensor Networks

This paper proposes a network protocol that relies on cross-layer interaction between the Medium Access Control (MAC), Network and Application layers for w...

SBrT 2010


Cyclotomic Basis for Computing the Discrete Fourier Transform

This paper presents a new fast algorithm for computing an N-point discrete Fourier transform. The algorithm meets the Heideman multiplicative complexity low...

SBrT 2010