2010 - VII International Telecommunications Symposium
System-Level Analysis of Outer Loop Link Adaptation on Mobile WiMAX Systems
Link adaptation is a process of paramount importance to optimize the performance of wireless communication systems. However, standardization committees have ...
- Andre M. Cavalcante
- Juliano J. Bazzo
- Edgar B. Souza
- Marco J. de Sousa
- Lauri Kuru
- Jani Moilanen
- Link adaptation
- WiMAX 802.16e
- system-level analysis
SBrT 2010
Synchronization of Legacy 802.11a/g Devices Operating in IEEE 802.11n Networks
It is investigated the performance of legacy IEEE 802.11a time synchronization algorithms when the synchronization preamble is transmitted by IEEE 802.11n ...
- Roger Pierre Fabris Hoefel
- André Michielin Câmara
- 802.11n
- 802.11a/g
- synchronization
SBrT 2010
SUI Propagation Model Tuning from Collected Data in Fixed Wireless Systems at Arboreous Environments on 5.8 GHz Band
This paper presents an tuning in SUI Propagation Model through the least squares algorithm. Data measurements were carried out in arboreous environments, i...
- Bruno S. L. Castro
- Gervásio P. S. Cavalcante
- Igor R. Gomes
- Oziel de O. Carneiro
- SUI Model
- least squares tuning algorithm
- 5.8 GHz
- arboreous environments
SBrT 2010
Speaker Recognition Using Dynamic Features and The Null Space Combination of Classifiers in The Sub-band Domain
This paper investigates the inclusion of dynamic features in the input vectors used by the multiple classification scheme which employ the null space to co...
- Eduardo Esteves Vale
- Abraham Alcaim
- Rosângela Coelho
- Delta features
- delta-delta features
- multiple subband-classifiers
- speaker recognition
SBrT 2010
Single shift-register for RFID tag secrecy
In this paper we present a new privacy scheme against passive adversaries based on the message modulation instead of classical cryptographic models for low...
- Bruno B. Albert
- F. M. de Assis
- Marcus V. C. Rodrigues
- RFID
- privacy/security
- random modulation
- PRG
SBrT 2010