2010 - VII International Telecommunications Symposium
Quaternary LDPC Codes on OFDM Systems
This paper evaluates the performance of quaternary LDPC codes associated to OFDM systems. The LDPC codes are based on a ring Z4 of integers modulo-4. Each...
- Maria Leopoldina M. N. S. Gonçalves
- Renato Baldini Filho
- Quaternary LDPC code
- OFDM
- frequencyselective fading
SBrT 2010
Frequency-Domain Blind Source Separation employing a Non-Uniform DFT
Blind source separation (BSS) techniques have been extensively investigated in the last years, due to their large number of applications. There are two main...
- Diego B. Haddad
- Mariane R. Petraglia
- Paulo Bulkool Batalheiro
SBrT 2010
Performance comparison between single-carrier and OFDM using the cutoff rate
This article aims to establish a performance comparison between the Single Carrier with Cyclic Prefix (SCCP) and the Orthogonal Frequency Division Multiple...
- Amanda de Paula
- Cristiano Panazio
- OFDM
- frequency domain equalization
- singlecarrier
- DFE
- cutoff rate
- channel coding
SBrT 2010
Traffic Influence in Distributed Networks Using Cooperation and Set-Membership Filtering
This paper investigates the influence of data loss in the performance of cooperative adaptive filters in distributed networks. The algorithms analyzed are...
- Marco Fernandes S. Xaud. Diego A. Zanon
- Ana Luiza Dallora
- sensor networks
- adaptive filters
- cooperation
- setmembership adaptive filtering
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...
- David Daniel e Silva
- Carlos Alberto Ynoguti
- Marcelo Ricardo Stemmer
- Automatic speech recognition
- Lombard effect
- speech database
SBrT 2010