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PIMRC
2010
IEEE
15 years 4 months ago
Iterative SIC receiver scheme for non-orthogonally superimposed signals on top of OFDMA
In this paper, we propose an iterative SIC receiver architecture with pilot- and data-based channel estimation for efficient decoding of non-orthogonal superimposed signals. The no...
Andreas Ruegg, Alberto Tarable
ICIP
2009
IEEE
15 years 4 months ago
Quality-based dynamic threshold for iris matching
Current iris recognition systems usually regard poor quality iris images useless since defocused or partially occluded iris images may cause false acceptance. However, such a stra...
Wenbo Dong, Zhenan Sun, Tieniu Tan, Zhuoshi Wei
ICDE
2008
IEEE
146views Database» more  ICDE 2008»
16 years 8 months ago
Explaining and Reformulating Authority Flow Queries
Authority flow is an effective ranking mechanism for answering queries on a broad class of data. Systems have been developed to apply this principle on the Web (PageRank and topic ...
Ramakrishna Varadarajan, Vagelis Hristidis, Louiqa...
SIGMOD
2008
ACM
122views Database» more  SIGMOD 2008»
16 years 6 months ago
Building query optimizers for information extraction: the SQoUT project
Text documents often embed data that is structured in nature. This structured data is increasingly exposed using information extraction systems, which generate structured relation...
Alpa Jain, Panagiotis G. Ipeirotis, Luis Gravano
IS
2007
15 years 6 months ago
Evaluation of probabilistic queries over imprecise data in constantly-evolving environments
Sensors are often employed to monitor continuously changing entities like locations of moving objects and temperature. The sensor readings are reported to a database system, and a...
Reynold Cheng, Dmitri V. Kalashnikov, Sunil Prabha...