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CISS
2007
IEEE
14 years 1 months ago
How Many Users should be Turned On in a Multi-Antenna Broadcast Channel
This paper considers broadcast channels with L antennas at the base station and m single-antenna users, where each user has perfect channel knowledge and the base station obtains c...
Wei Dai, Youjian Liu, Brian Rider
ATVA
2006
Springer
131views Hardware» more  ATVA 2006»
14 years 1 months ago
Timed Unfoldings for Networks of Timed Automata
Whereas partial order methods have proved their efficiency for the analysis of discrete-event systems, their application to timed systems remains a challenging research topic. Here...
Patricia Bouyer, Serge Haddad, Pierre-Alain Reynie...
CAV
2008
Springer
108views Hardware» more  CAV 2008»
13 years 11 months ago
Reducing Concurrent Analysis Under a Context Bound to Sequential Analysis
This paper addresses the analysis of concurrent programs with shared memory. Such an analysis is undecidable in the presence of multiple procedures. One approach used in recent wor...
Akash Lal, Thomas W. Reps
COCO
2008
Springer
118views Algorithms» more  COCO 2008»
13 years 11 months ago
Quantum Expanders: Motivation and Constructions
: We define quantum expanders in a natural way. We give two constructions of quantum expanders, both based on classical expander constructions. The first construction is algebraic,...
Avraham Ben-Aroya, Oded Schwartz, Amnon Ta-Shma
IPCV
2007
13 years 11 months ago
QIM-Based Histogram-Preserving and High Capacity Steganography for JPEG Images
- We propose a secure steganographic approach with a high capacity. We first use small neighborhoods of the original histogram to calculate the minimum remapping from a histogram t...
Xiaojun Qi, Daniel Lewis