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ICALT
2008
IEEE
14 years 4 months ago
LEMAT: A Project for Innovation in Teaching Mathematics
“Lemat” is an acronym for Libro Electrónico de Matemáticas, which means Electronic Book of Mathematics. It is a project developed by a group of teachers at secondary school ...
Beatriz Porras, Jose A. Cordon, Juan Manuel Olazab...
ICASSP
2008
IEEE
14 years 4 months ago
Utility-based power control for peer-to-peer cognitive radio networks with heterogeneous QoS constraints
Transmit-power control is a critical task in cognitive radio (CR) networks. In the present contribution, adherence to hierarchies between primary and secondary users in a peer-to-...
Nikolaos Gatsis, Antonio G. Marqués, Georgi...
GLOBECOM
2007
IEEE
14 years 4 months ago
MIMO-OFDM Channel Estimation in Presence of Carrier Frequency Offsets
— Optimal pilot design and placement for channel estimation in Multiple-input Multiple-output (MIMO) Orthogonal Frequency-Division Multiplexing (OFDM) systems in the presence of ...
Zhongshan Zhang, Wei Zhang, Chintha Tellambura
ICCCN
2007
IEEE
14 years 4 months ago
Evaluating Mobile Ad Hoc Networks: A Performance Index and Statistical Model
Abstract— This work is concerned with definining a performance index that can be used as an objective measure in the evaluation and comparison of ad hoc networking protocols. Sp...
Ikhlas Ajbar, Dmitri D. Perkins
NCA
2007
IEEE
14 years 4 months ago
GORDA: An Open Architecture for Database Replication
Although database replication has been a standard feature in database management systems for a long time, third party solutions have been enjoying an increasing popularity. These ...
Alfrânio Correia Jr., José Pereira, L...