Asymmetric binary covering codes
| dc.creator | Cooper, Joshua N. | |
| dc.creator | Ellis, Robert B. | |
| dc.creator | Kahng, Andrew B. | |
| dc.date | 2003-09-04 | |
| dc.date.accessioned | 2026-07-07T08:18:14Z | |
| dc.date.available | 2026-07-07T08:18:14Z | |
| dc.description | An asymmetric binary covering code of length n and radius R is a subset C of the n-cube Q_n such that every vector x in Q_n can be obtained from some vector c in C by changing at most R 1's of c to 0's, where R is as small as possible. K^+(n,R) is defined as the smallest size of such a code. We show K^+(n,R) is of order 2^n/n^R for constant R, using an asymmetric sphere-covering bound and probabilistic methods. We show K^+(n,n-R')=R'+1 for constant coradius R' iff n>=R'(R'+1)/2. These two results are extended to near-constant R and R', respectively. Various bounds on K^+ are given in terms of the total number of 0's or 1's in a minimal code. The dimension of a minimal asymmetric linear binary code ([n,R]^+ code) is determined to be min(0,n-R). We conclude by discussing open problems and techniques to compute explicit values for K^+, giving a table of best known bounds. | |
| dc.description | 16 pages | |
| dc.identifier | https://arxiv.org/abs/math/0309081 | |
| dc.identifier | http://arxiv.org/abs/math/0309081 | |
| dc.identifier | J. Combin. Theory Ser. A 100 (2002), no. 2, 232--249 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/134361 | |
| dc.subject | Combinatorics | |
| dc.subject | Information Theory | |
| dc.subject | 94B75 | |
| dc.title | Asymmetric binary covering codes | |
| dc.type | text |