Results 21 to 30 of about 692,674 (293)

A unified approach to combinatorial key predistribution schemes for sensor networks [PDF]

open access: yes, 2012
There have been numerous recent proposals for key predistribution schemes for wireless sensor networks based on various types of combinatorial structures such as designs and codes.
Paterson, Maura B.   +3 more
core   +1 more source

General Fractional Repetition Codes From Combinatorial Designs

open access: yesIEEE Access, 2017
Fractional repetition codes are a class of distributed storage codes dedicated to optimize the node repair performance, i.e., they enable uncoded exact repairs with minimum bandwidth consumption.
Bing Zhu, Hui Li, Shuo-Yen Robert Li
doaj   +1 more source

Global repair bandwidth cost optimization of generalized regenerating codes in clustered distributed storage systems

open access: yesIET Communications, 2021
In clustered distributed storage systems (CDSSs), one of the main design goals is minimizing the transmission cost during the failed storage nodes repairing. Generalized regenerating codes (GRCs) are proposed to balance the intra‐cluster repair bandwidth
Shushi Gu   +4 more
doaj   +1 more source

Sliding-window dynamic frameproof codes [PDF]

open access: yes, 2007
A sliding-window dynamic frameproof code is a scheme for discouraging the piracy of digital broadcasts through the use of digital fingerprinting. In this paper, we formally define sliding-window dynamic frameproof codes and provide optimal constructions ...
Paterson, Maura, Paterson, Maura B.
core   +1 more source

Isometry groups of combinatorial codes [PDF]

open access: yesElectronic Notes in Discrete Mathematics, 2017
Two isometry groups of combinatorial codes are described: the group of isometries, that is, the group of Hamming isometries from a code to itself and the group of monomial isometries, which is the group of those isometries of a code to itself that extend to monomial maps.
openaire   +3 more sources

The combinatorics of combinatorial coding by a real [PDF]

open access: yesJournal of Symbolic Logic, 1995
AbstractWe lay the combinatorial foundations for [5] by setting up and proving the essential properties of the coding apparatus for singular cardinals. We also prove another result concerning the coding apparatus for inaccessible cardinals.
Saharon Shelah, Lee J. Stanley
openaire   +3 more sources

A Combinatorial Approach to Flag Codes

open access: yesCoRR, 2021
In network coding, a flag code is a collection of flags, that is, sequences of nested subspaces of a vector space over a finite field. Due to its definition as the sum of the corresponding subspace distances, the flag distance parameter encloses a hidden combinatorial structure.
Clementa Alonso-González   +1 more
openaire   +2 more sources

Specification of neuronal identities by feedforward combinatorial coding.

open access: yesPLoS Biology, 2007
Neuronal specification is often seen as a multistep process: earlier regulators confer broad neuronal identity and are followed by combinatorial codes specifying neuronal properties unique to specific subtypes.
Magnus Baumgardt   +4 more
doaj   +1 more source

Research on Universal Combinatorial Coding [PDF]

open access: yesThe Scientific World Journal, 2014
The conception of universal combinatorial coding is proposed. Relations exist more or less in many coding methods. It means that a kind of universal coding method is objectively existent. It can be a bridge connecting many coding methods. Universal combinatorial coding is lossless and it is based on the combinatorics theory.
Jun Lu, Zhuo Zhang, Juan Mo
openaire   +3 more sources

On p-Adic Estimates of Weights in Abelian Codes over Galois Rings [PDF]

open access: yes, 2005
Let p be a prime. We prove various analogues and generalizations of McEliece's theorem on the p-divisibility of weights of words in cyclic codes over a finite field of characteristic p. Here we consider Abelian codes over various Galois rings.
Katz, Daniel Jerome
core   +1 more source

Home - About - Disclaimer - Privacy