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More constructions of near optimal codebooks associated with binary sequences
Codes from hall planes of odd order
Institute of Mathematics, Physics and Computer Science, Aberystwyth University, Aberystwyth SY23 3BZ, UK |
We show explicitly that the dimension of the ternary code of the Hall plane of order 9 is greater than the dimension of the ternary code of the desarguesian plane of order 9. The proof requires finding a word with some defined properties in the dual ternary code of the desarguesian plane of order 9. The idea can be generalised for other orders, provided that words in the dual code of the desarguesian projective plane that have the specified properties can be found.
References:
| [1] |
E. F. Assmus Jr and J. D. Key, Designs and Their Codes, Cambridge Univ. Press, Cambridge, 1992.
doi: 10.1017/CBO9781316529836.
|
| [2] |
W. Bosma, J. Cannon and C. Playoust,
The Magma algebra system Ⅰ: the user language, J. Symb. Comput., 24 (1997), 235-265.
doi: 10.1006/jsco.1996.0125. |
| [3] |
J. Cannon, A. Steel and G. White, Linear codes over finite fields, in Handbook of Magma Functions (eds. J. Cannon and W. Bosma), Computational Algebra Group, Dep. Math. , Univ. Sydney, 2006, V2. 13,3951-4023. |
| [4] |
P. Dembowski, Finite geometries, in Ergebnisse der Mathematik und ihrer Grenzgebiete, Springer-Verlag, Berlin, 1968. |
| [5] |
The GAP Group, GAP -Groups, Algorithms, and Programming, Version 4. 4. 12,2008, available at http://www.gap-system.org. |
| [6] |
D. Ghinelli, M. J. de Resmini and J. D. Key,
Minimum words of codes from affine planes, J. Geom., 91 (2008), 43-51.
doi: 10.1007/s00022-008-2096-y. |
| [7] |
D. R. Hughes and F. C. Piper, Projective Planes, Springer-Verlag, New York, 1973. |
| [8] |
J. D. Key and M. J. de Resmini,
Small sets of even type and codewords, J. Geom., 61 (1998), 83-104.
doi: 10.1007/BF01237498. |
| [9] |
J. D. Key, T. P. McDonough and V. C. Mavron,
An upper bound for the minimum weight of the dual codes of desarguesian planes, Europ. J. Combin., 30 (2009), 220-229.
doi: 10.1016/j.ejc.2008.01.003. |
| [10] |
J. D. Key, T. P. McDonough and V. C. Mavron,
Codes from Hall planes of even order, J. Geom., 105 (2014), 33-41.
doi: 10.1007/s00022-013-0189-8. |
| [11] |
H. Lüneburg, Translation Planes, Springer-Verlag, New York, 1980. |
| [12] |
T. G. Ostrom, Finite Translation Planes, Springer-Verlag, 1970. |
show all references
References:
| [1] |
E. F. Assmus Jr and J. D. Key, Designs and Their Codes, Cambridge Univ. Press, Cambridge, 1992.
doi: 10.1017/CBO9781316529836.
|
| [2] |
W. Bosma, J. Cannon and C. Playoust,
The Magma algebra system Ⅰ: the user language, J. Symb. Comput., 24 (1997), 235-265.
doi: 10.1006/jsco.1996.0125. |
| [3] |
J. Cannon, A. Steel and G. White, Linear codes over finite fields, in Handbook of Magma Functions (eds. J. Cannon and W. Bosma), Computational Algebra Group, Dep. Math. , Univ. Sydney, 2006, V2. 13,3951-4023. |
| [4] |
P. Dembowski, Finite geometries, in Ergebnisse der Mathematik und ihrer Grenzgebiete, Springer-Verlag, Berlin, 1968. |
| [5] |
The GAP Group, GAP -Groups, Algorithms, and Programming, Version 4. 4. 12,2008, available at http://www.gap-system.org. |
| [6] |
D. Ghinelli, M. J. de Resmini and J. D. Key,
Minimum words of codes from affine planes, J. Geom., 91 (2008), 43-51.
doi: 10.1007/s00022-008-2096-y. |
| [7] |
D. R. Hughes and F. C. Piper, Projective Planes, Springer-Verlag, New York, 1973. |
| [8] |
J. D. Key and M. J. de Resmini,
Small sets of even type and codewords, J. Geom., 61 (1998), 83-104.
doi: 10.1007/BF01237498. |
| [9] |
J. D. Key, T. P. McDonough and V. C. Mavron,
An upper bound for the minimum weight of the dual codes of desarguesian planes, Europ. J. Combin., 30 (2009), 220-229.
doi: 10.1016/j.ejc.2008.01.003. |
| [10] |
J. D. Key, T. P. McDonough and V. C. Mavron,
Codes from Hall planes of even order, J. Geom., 105 (2014), 33-41.
doi: 10.1007/s00022-013-0189-8. |
| [11] |
H. Lüneburg, Translation Planes, Springer-Verlag, New York, 1980. |
| [12] |
T. G. Ostrom, Finite Translation Planes, Springer-Verlag, 1970. |
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