Sumários

Convolutional codes and revisions

31 Maio 2019, 11:00 Pedro Alves Martins Rodrigues

Free distance of convolutional codes. Path counting in state diagrams.

Revision on some topics of coding theory.


Viterbi's algorithm

30 Maio 2019, 08:30 Pedro Alves Martins Rodrigues

Description of Viterbi's decoding algorithm. Examples of application.
Viterbi's decoding is a minimal distance decoding.
Catastrophic coding.


Generators for Convolutional codes

24 Maio 2019, 11:00 Pedro Alves Martins Rodrigues

External and internal degree. Canonical generators.Basic and reduced generator matrices. A generator is canonical if and only if it is basic and reduced.
Equivalent properties.


Convolutional codes

23 Maio 2019, 08:30 Pedro Alves Martins Rodrigues

Basic definitions for convolutional codes. encoding with generator matrix. State diagrams and encoding.


Correction of erasures and probability of error

17 Maio 2019, 11:00 Pedro Alves Martins Rodrigues

Erasure correction capability. Simultaneous correction of erasures and errors.
Brief revision on the probability  of error.