Title
The structure of dual Grassmann codes
Abstract
In this article we study the duals of Grassmann codes, certain codes coming from the Grassmannian variety. Exploiting their structure, we are able to count and classify all their minimum weight codewords. In this classification the lines lying on the Grassmannian variety play a central role. Related codes, namely the affine Grassmann codes, were introduced more recently in Beelen et al. (IEEE Trans Inf Theory 56(7):3166---3176, 2010), while their duals were introduced and studied in Beelen et al. (IEEE Trans Inf Theory 58(6):3843---3855, 2010). In this paper we also classify and count the minimum weight codewords of the dual affine Grassmann codes. Combining the above classification results, we are able to show that the dual of a Grassmann code is generated by its minimum weight codewords. We use these properties to establish that the increase of value of successive generalized Hamming weights of a dual Grassmann code is 1 or 2.
Year
DOI
Venue
2016
10.1007/s10623-015-0085-3
Designs, Codes and Cryptography
Keywords
Field
DocType
Dual Grassmann code,Hamming weights,Tanner code,14G50,94B27,14M15
Affine transformation,Discrete mathematics,Hamming code,Combinatorics,Dual polyhedron,Grassmannian,Linear code,Minimum weight,Mathematics
Journal
Volume
Issue
ISSN
79
3
0925-1022
Citations 
PageRank 
References 
1
0.38
4
Authors
2
Name
Order
Citations
PageRank
Peter Beelen111615.95
Fernando Piñero211.73