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DCC
2004
IEEE
16 years 6 months ago
LDPC Codes from Triangle-Free Line Sets
We study sets of lines of AG(n, q) and PG(n, q) with the property that no three lines form a triangle. As a result the associated point-line incidence graph contains no 6-cycles a...
Keith E. Mellinger
DCC
2001
IEEE
16 years 6 months ago
The Invariants of the Clifford Groups
The automorphism group of the Barnes-Wall lattice Lm in dimension 2m (m = 3) is a subgroup of index 2 in a certain "Clifford group" Cm of structure 21+2m + .O+ (2m, 2). ...
Gabriele Nebe, Eric M. Rains, Neil J. A. Sloane
DCC
2010
IEEE
16 years 1 months ago
A Symbolic Dynamical System Approach to Lossy Source Coding with Feedforward
It is known that modeling an information source via a symbolic dynamical system evolving over the unit interval, leads to a natural lossless compression scheme attaining the entro...
Ofer Shayevitz
DCC
2009
IEEE
16 years 1 months ago
On Compression of Data Encrypted with Block Ciphers
This paper investigates compression of encrypted data. It has been previously shown that data encrypted with Vernam’s scheme [1], also known as the one-time pad, can be compress...
Demijan Klinc, Carmit Hazay, Ashish Jagmohan, Hugo...
SIBGRAPI
2008
IEEE
16 years 1 months ago
Approximations by Smooth Transitions in Binary Space Partitions
This work proposes a simple approximation scheme for discrete data that leads to an infinitely smooth result without global optimization. It combines the flexibility of Binary Sp...
Marcos Lage, Alex Laier Bordignon, Fabiano Petrone...