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ICC
2007
IEEE
118views Communications» more  ICC 2007»
16 years 28 days ago
Adaptive Data Transmission in Downlink MIMO-OFDM Systems with Pre-Equalization
Abstract— An optimization algorithm for finding user allocation, bit and power loading in the downlink of MIMO-OFDM systems is proposed. The algorithm represents a generalizatio...
Peter Trifonov, Elena Costa
DIS
2006
Springer
15 years 10 months ago
Kalman Filters and Adaptive Windows for Learning in Data Streams
We study the combination of Kalman filter and a recently proposed algorithm for dynamically maintaining a sliding window, for learning from streams of examples. We integrate this i...
Albert Bifet, Ricard Gavaldà
EDM
2010
174views Data Mining» more  EDM 2010»
15 years 8 months ago
Clustering Student Learning Activity Data
We show a variety of ways to cluster student activity datasets using different clustering and subspace clustering algorithms. Our results suggest that each algorithm has its own st...
Haiyun Bian
IJNSEC
2007
193views more  IJNSEC 2007»
15 years 6 months ago
Statistical Attack Resilient Data Hiding
In this paper, we propose a discrete cosine transform (DCT) based spread spectrum data-hiding algorithm that is resilient to statistical attacks. Unlike other spread spectrum base...
Palak K. Amin, Ning Liu, Koduvayur P. Subbalakshmi
GIS
2010
ACM
15 years 5 months ago
Extracting moving regions from spatial data
We provide an algorithm that can construct a valid moving region from snapshots of a region in time. Our algorithm is robust in the sense that given valid input regions, the gener...
Mark McKenney, James Webb