Codes from the incidence matrices and line graphs of Hamming graphs $H^k(n,2)$ for $k \geq 2$

Jennifer D. Key; Washiela Fish; Eric Mwambene

doi:10.3934/amc.2011.5.373

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May 2011, 5(2): 373-394. doi: 10.3934/amc.2011.5.373

Codes from the incidence matrices and line graphs of Hamming graphs $H^k(n,2)$ for $k \geq 2$

Jennifer D. Key ^1, , Washiela Fish ^1, and Eric Mwambene ^1,

1.	Department of Mathematics and Applied Mathematics, University of the Western Cape, 7535 Bellville, South Africa, South Africa, South Africa

Received May 2010 Revised June 2010 Published May 2011

Abstract
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We examine the $p$-ary codes, for any prime $p$, that can be obtained from incidence matrices and line graphs of the Hamming graphs, $H^k(n,m)$, for $k \geq 2$. For $m=2$, we obtain the main parameters of the codes from the incidence matrices, including the minimum weight and the nature of the minimum words. We show that all the codes can be used for full permutation decoding.

Keywords: Hamming graphs, codes, permutation decoding..

Mathematics Subject Classification: Primary: 05C45, 94B05; Secondary: 05B0.

Citation: Jennifer D. Key, Washiela Fish, Eric Mwambene. Codes from the incidence matrices and line graphs of Hamming graphs $H^k(n,2)$ for $k \geq 2$. Advances in Mathematics of Communications, 2011, 5 (2) : 373-394. doi: 10.3934/amc.2011.5.373

References:

[1]	E. F. Assmus, Jr and J. D. Key, "Designs and Their Codes,'', Cambridge University Press, (1992). Google Scholar
[2]	W. Bosma, J. Cannon and C. Playoust, The Magma algebra system I: The user language,, J. Symb. Comp., 24 (1997), 235. doi: 10.1006/jsco.1996.0125. Google Scholar
[3]	A. E. Brouwer, A. M. Cohen and A. Neumaier, Distance-Regular Graphs,, in, (1989). Google Scholar
[4]	J. Cannon, A. Steel and G. White, Linear codes over finite fields,, in, (2006), 3951. Google Scholar
[5]	W. Fish, "Codes from Uniform Subset Graphs and Cyclic Products,'', Ph.D thesis, (2007). Google Scholar
[6]	W. Fish, J. D. Key and E. Mwambene, Codes, designs and groups from the Hamming graphs,, J. Combin. Inform. System Sci., 34 (2009), 169. Google Scholar
[7]	W. Fish, J. D. Key and E. Mwambene, Graphs, designs and codes related to the $n$-cube,, Discrete Math., 309 (2009), 3255. doi: 10.1016/j.disc.2008.09.024. Google Scholar
[8]	W. Fish, J. D. Key and E. Mwambene, Binary codes of line graphs from the $n$-cube,, J. Symb. Comput., 45 (2010), 800. doi: 10.1016/j.jsc.2010.03.012. Google Scholar
[9]	W. Fish, J. D. Key and E. Mwambene, Codes from the incidence matrices and line graphs of Hamming graphs,, Discrete Math., 310 (2010), 1884. doi: 10.1016/j.disc.2010.02.010. Google Scholar
[10]	D. M. Gordon, Minimal permutation sets for decoding the binary Golay codes,, IEEE Trans. Inform. Theory, 28 (1982), 541. doi: 10.1109/TIT.1982.1056504. Google Scholar
[11]	W. C. Huffman, Codes and groups,, in, (1998), 1345. Google Scholar
[12]	J. D. Key, T. P. McDonough and V. C. Mavron, Partial permutation decoding for codes from finite planes,, European J. Combin., 26 (2005), 665. doi: 10.1016/j.ejc.2004.04.007. Google Scholar
[13]	J. D. Key, T. P. McDonough and V. C. Mavron, Information sets and partial permutation decoding for codes from finite geometries,, Finite Fields Appl., 12 (2006), 232. doi: 10.1016/j.ffa.2005.05.007. Google Scholar
[14]	J. D. Key, J. Moori and B. G. Rodrigues, Codes associated with triangular graphs, and permutation decoding,, Int. J. Inform. Coding Theory, 1 (2010), 334. doi: 10.1504/IJICOT.2010.032547. Google Scholar
[15]	J. D. Key and B. G. Rodrigues, Codes from lattice and related graphs, and permutation decoding,, Discrete Appl. Math., 158 (2010), 1807. doi: 10.1016/j.dam.2010.07.003. Google Scholar
[16]	J. D. Key and B. G. Rodrigues, Codes from incidence matrices of strongly regular graphs,, in preparation., (). Google Scholar
[17]	J. D. Key and P. Seneviratne, Permutation decoding for binary self-dual codes from the graph $Q_n$ where $n$ is even,, in, (2007), 152. Google Scholar
[18]	H.-J. Kroll and R. Vincenti, PD-sets related to the codes of some classical varieties,, Discrete Math., 301 (2005), 89. doi: 10.1016/j.disc.2004.11.020. Google Scholar
[19]	J. H. van Lint and R. M. Wilson, "A Course in Combinatorics,'', Cambridge University Press, (1992). Google Scholar
[20]	F. J. MacWilliams, Permutation decoding of systematic codes,, Bell System Tech. J., 43 (1964), 485. Google Scholar
[21]	F. J. MacWilliams and N. J. A. Sloane, "The Theory of Error-Correcting Codes,'', North-Holland, (1983). Google Scholar
[22]	R. Peeters., On the $p$-ranks of the adjacency matrices of distance-regular graphs,, J. Algebraic Combin., 15 (2002), 127. doi: 10.1023/A:1013842904024. Google Scholar
[23]	J. Schönheim, On coverings,, Pacific J. Math., 14 (1964), 1405. Google Scholar
[24]	H. Whitney, Congruent graphs and the connectivity of graphs,, Amer. J. Math., 54 (1932), 154. doi: 10.2307/2371086. Google Scholar

show all references

References:

[1]	E. F. Assmus, Jr and J. D. Key, "Designs and Their Codes,'', Cambridge University Press, (1992). Google Scholar
[2]	W. Bosma, J. Cannon and C. Playoust, The Magma algebra system I: The user language,, J. Symb. Comp., 24 (1997), 235. doi: 10.1006/jsco.1996.0125. Google Scholar
[3]	A. E. Brouwer, A. M. Cohen and A. Neumaier, Distance-Regular Graphs,, in, (1989). Google Scholar
[4]	J. Cannon, A. Steel and G. White, Linear codes over finite fields,, in, (2006), 3951. Google Scholar
[5]	W. Fish, "Codes from Uniform Subset Graphs and Cyclic Products,'', Ph.D thesis, (2007). Google Scholar
[6]	W. Fish, J. D. Key and E. Mwambene, Codes, designs and groups from the Hamming graphs,, J. Combin. Inform. System Sci., 34 (2009), 169. Google Scholar
[7]	W. Fish, J. D. Key and E. Mwambene, Graphs, designs and codes related to the $n$-cube,, Discrete Math., 309 (2009), 3255. doi: 10.1016/j.disc.2008.09.024. Google Scholar
[8]	W. Fish, J. D. Key and E. Mwambene, Binary codes of line graphs from the $n$-cube,, J. Symb. Comput., 45 (2010), 800. doi: 10.1016/j.jsc.2010.03.012. Google Scholar
[9]	W. Fish, J. D. Key and E. Mwambene, Codes from the incidence matrices and line graphs of Hamming graphs,, Discrete Math., 310 (2010), 1884. doi: 10.1016/j.disc.2010.02.010. Google Scholar
[10]	D. M. Gordon, Minimal permutation sets for decoding the binary Golay codes,, IEEE Trans. Inform. Theory, 28 (1982), 541. doi: 10.1109/TIT.1982.1056504. Google Scholar
[11]	W. C. Huffman, Codes and groups,, in, (1998), 1345. Google Scholar
[12]	J. D. Key, T. P. McDonough and V. C. Mavron, Partial permutation decoding for codes from finite planes,, European J. Combin., 26 (2005), 665. doi: 10.1016/j.ejc.2004.04.007. Google Scholar
[13]	J. D. Key, T. P. McDonough and V. C. Mavron, Information sets and partial permutation decoding for codes from finite geometries,, Finite Fields Appl., 12 (2006), 232. doi: 10.1016/j.ffa.2005.05.007. Google Scholar
[14]	J. D. Key, J. Moori and B. G. Rodrigues, Codes associated with triangular graphs, and permutation decoding,, Int. J. Inform. Coding Theory, 1 (2010), 334. doi: 10.1504/IJICOT.2010.032547. Google Scholar
[15]	J. D. Key and B. G. Rodrigues, Codes from lattice and related graphs, and permutation decoding,, Discrete Appl. Math., 158 (2010), 1807. doi: 10.1016/j.dam.2010.07.003. Google Scholar
[16]	J. D. Key and B. G. Rodrigues, Codes from incidence matrices of strongly regular graphs,, in preparation., (). Google Scholar
[17]	J. D. Key and P. Seneviratne, Permutation decoding for binary self-dual codes from the graph $Q_n$ where $n$ is even,, in, (2007), 152. Google Scholar
[18]	H.-J. Kroll and R. Vincenti, PD-sets related to the codes of some classical varieties,, Discrete Math., 301 (2005), 89. doi: 10.1016/j.disc.2004.11.020. Google Scholar
[19]	J. H. van Lint and R. M. Wilson, "A Course in Combinatorics,'', Cambridge University Press, (1992). Google Scholar
[20]	F. J. MacWilliams, Permutation decoding of systematic codes,, Bell System Tech. J., 43 (1964), 485. Google Scholar
[21]	F. J. MacWilliams and N. J. A. Sloane, "The Theory of Error-Correcting Codes,'', North-Holland, (1983). Google Scholar
[22]	R. Peeters., On the $p$-ranks of the adjacency matrices of distance-regular graphs,, J. Algebraic Combin., 15 (2002), 127. doi: 10.1023/A:1013842904024. Google Scholar
[23]	J. Schönheim, On coverings,, Pacific J. Math., 14 (1964), 1405. Google Scholar
[24]	H. Whitney, Congruent graphs and the connectivity of graphs,, Amer. J. Math., 54 (1932), 154. doi: 10.2307/2371086. Google Scholar

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Codes from the incidence matrices and line graphs of Hamming graphs $H^k(n,2)$ for $k \geq 2$

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Codes from the incidence matrices and line graphs of Hamming graphs $H^k(n,2)$ for $k \geq 2$

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