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ICASSP
2011
IEEE
14 years 10 months ago
A hybrid compressed sensing algorithm for sparse channel estimation in MIMO OFDM systems
Due to multipath delay spread and relatively high sampling rate in OFDM systems, the channel estimation is formulated as a sparse recovery problem, where a hybrid compressed sensi...
Chenhao Qi, Lenan Wu
INFOCOM
2011
IEEE
14 years 10 months ago
SelectCast: Scalable data aggregation scheme in wireless sensor networks
—In this work, for a wireless sensor network (WSN) of n randomly placed sensors with node density λ ∈ [1, n], we study the tradeoffs between the aggregation throughput and gat...
Cheng Wang, ShaoJie Tang, Xiang-Yang Li, Changjun ...
ICCV
2011
IEEE
14 years 6 months ago
Learning Cross-modality Similarity for Multinomial Data
Many applications involve multiple-modalities such as text and images that describe the problem of interest. In order to leverage the information present in all the modalities, on...
Yangqing Jia, Mathieu Salzmann, Trevor Darrell
ICCV
2011
IEEE
14 years 6 months ago
Coherency Sensitive Hashing
Coherency Sensitive Hashing (CSH) extends Locality Sensitivity Hashing (LSH) and PatchMatch to quickly find matching patches between two images. LSH relies on hashing, which maps...
Simon Korman, Shai Avidan
CHES
2011
Springer
254views Cryptology» more  CHES 2011»
14 years 6 months ago
Extractors against Side-Channel Attacks: Weak or Strong?
Randomness extractors are important tools in cryptography. Their goal is to compress a high-entropy source into a more uniform output. Beyond their theoretical interest, they have ...
Marcel Medwed, François-Xavier Standaert