Sciweavers

3333 search results - page 122 / 667
» New Invariants for Groups
Sort
View
GBRPR
2007
Springer
14 years 4 months ago
Grouping Using Factor Graphs: An Approach for Finding Text with a Camera Phone
Abstract. We introduce a new framework for feature grouping based on factor graphs, which are graphical models that encode interactions among arbitrary numbers of random variables....
Huiying Shen, James Coughlan
CCECE
2006
IEEE
14 years 4 months ago
Group-Optimal Linear Space-Time Multiuser Detection
Multiuser detection (MUD) techniques are known to improve the performance of CDMA cellular communication systems. This performance improvement usually comes at a large computation...
Benoit Pelletier, Benoît Champagne
GLOBECOM
2006
IEEE
14 years 4 months ago
Group-Based Block Linear Successive Interference Cancellation For DS-CDMA
— Mobile communication systems based on DS-CDMA suffer from multiple access interference (MAI), which limits the system capacity. Several techniques, such as beamforming with mul...
Benoit Pelletier, Benoît Champagne
ICALP
2005
Springer
14 years 3 months ago
Quantum Complexity of Testing Group Commutativity
We consider the problem of testing the commutativity of a black-box group specified by its k generators. The complexity (in terms of k) of this problem was first considered by Pa...
Frédéric Magniez, Ashwin Nayak
IC
2004
13 years 11 months ago
Scalable Reliable Multicast Using Receiver Grouping
Scalable Reliable Multicast Protocols have been the subject of much research in recent years. We propose a new protocol that groups receivers for error recovery into fixed-size gr...
Elias G. Khalaf, S. Sitharama Iyengar