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ICIP
2009
IEEE
14 years 7 months ago
Model based analysis for quantization parameter cascading in hierarchical video coding
Originally, the hierarchical coding structure was proposed to achieve temporal scalability. Soon after, it was realized that with a proper quantization parameter cascading (QPC) s...
Xiang Li, Peter Amon, Andreas Hutter, André...
TSP
2012
13 years 5 months ago
Randomized Isometric Linear-Dispersion Space-Time Block Coding for the DF Relay Channel
This article presents a randomized linear-dispersion space-time block code for decode-andforward synchronous relays. The coding matrices are obtained as a set of columns (or rows)...
David Gregoratti, Walid Hachem, Xavier Mestre
IEE
2008
120views more  IEE 2008»
14 years 9 months ago
Reducing the use of nullable types through non-null by default and monotonic non-null
With Java 5 annotations, we note a marked increase in tools that can statically detect potential null dereferences. To be effective such tools require that developers annotate decl...
Patrice Chalin, Perry R. James, Frédé...
SIGCOMM
2006
ACM
15 years 3 months ago
XORs in the air: practical wireless network coding
— This paper proposes COPE, a new architecture for wireless mesh networks. In addition to forwarding packets, routers mix (i.e., code) packets from different sources to increase ...
Sachin Katti, Hariharan Rahul, Wenjun Hu, Dina Kat...
CORR
2007
Springer
149views Education» more  CORR 2007»
14 years 9 months ago
Graph Entropy, Network Coding and Guessing games
We introduce the (private) entropy of a directed graph (in a new network coding sense) as well as a number of related concepts. We show that the entropy of a directed graph is ide...
Søren Riis