Abstract
We introduce new examples of Low Density Parity Check codes connected with the new families of regular graphs of bounded degree and increasing girth. Some new codes have an evident advantage in comparison with the D(n,q) based codes [9]. The new graphs are not edge transitive. So, they are not isomorphic to the Cayley graphs or those from the D(n,q) family, [14]. We use computer simulation to investigate spectral properties of graphs used for the construction of new codes. The experiment demonstrates existence of large spectral gaps in the case of each graph. We conjecture the existence of infinite families of Ramanujan graphs and expanders of bounded degree,existence of strongly Ramanujan graphs of unbounded degree. The lists of eigenvalues can be used for various practical applications of expanding graphs (Coding Theory, Networking, Image Processing). We show that new graphs can be used as a source of lists of cospectral pairs of graphs of bounded or unbounded degree.
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References
Alon, N.: Eigenvalues, geometric expanders, sorting in rounds and Ramsey theory. Combinatorica 6(3), 207–219 (1986)
Biggs, N.L.: Algebraic Graph Theory, 2nd edn. Cambridge University Press (1993)
Biggs, N.L.: Graphs with large girth. Ars Combin. In: Eleventh British Combinatorial Conference, London, vol. 25(C), pp. 73–80 (1988)
Bollobas, B.: Extremal Graph Theory. Academic Press, London (1978)
Chiu, P.: Cubic Ramanujan graphs. Combinatorica 12(3), 275–285 (1992)
Erdős, P.: Graph theory and probability. Canad. Math. Monthly 11, 34–38 (1959)
Gallager, R.G.: Low-Density Parity-Checks Codes. Monograph. M.I.T. Press (1963)
Guinand, P., Lodge, J.: Graph theoretic construction of generalized product codes. In: IEEE International Symposium on Information Theory, ISIT 1997, Ulm, Germany, June 29-July 4, p. 111 (1997)
Guinand, P., Lodge, J.: Tanner type codes arising from large girth graphs. In: Canadian Workshop on Information Theory CWIT 1997, Toronto, Ontario, Canada, pp. 5–7 (1997)
Hoory, S., Linial, N., Wigderson, A.: Expander graphs and their applications. Bull. Amer. Math. Soc. (N.S.) 43(4), 439–561 (2006)
Imrich, W.: Explicit construction of regular graphs without small cycles. Combinatorica 4(1), 53–59 (1984)
Lazebnik, F., Ustimenko, V., Woldar, A.J.: Polarities and 2k-cycle-free graphs. Discrete Mathematics 197-198, 503–513 (1999)
Lazebnik, F., Ustimenko, V., Woldar, A.J.: A characterization of the components of the graphs D(k,q). Discrete Mathematics 157, 271–283 (1996)
Lazebnik, F., Ustimenko, V., Woldar, A.J.: A new series of dense graphs of high girth. Bulletin (New Series) of the AMS 32(1), 73–79 (1995)
Lazebnik, F., Ustimenko, V., Woldar, A.J.: Polarities and 2k-cycle-free graphs. Discrete Mathematics 197-198, 503–513 (1999)
Lubotsky, A., Philips, R., Sarnak, P.: Ramanujan graphs. Combinatorica 8(3), 261–277 (1988)
Luby, M.G., Mitzenmacher, M., Shokrollahi, M.A., Spielman, D.A.: Improved Low-Density Parity-Check Codes Using Irregular Graphs and Belief Propagation. In: ISIT 1998-IEEE International Symposium of Information Theory, Cambridge, USA, p. 171 (1998)
MacKay, D.J.C., Neal, R.M.: Good Codes Based on Very Sparse Matrices. In: Boyd, C. (ed.) Cryptography and Coding 1995. LNCS, vol. 1025, pp. 100–111. Springer, Heidelberg (1995)
MacKay, D., Postol, M.: Weakness of Margulis and Ramanujan Margulis Low Dencity Parity Check Codes. Electronic Notes in Theoretical Computer Science, vol. 74 (2003)
Margulis, G.A.: Explicit group-theoretic constructions of combinatorial schemes and their applications in the construction of expanders and concentrators. Problemy Peredachi Informatsii 24(1), 51–60 (1988)
Margulis, G.A.: Explicit construction of graphs without short cycles and low density codes. Combinatorica 2, 1–78 (1982)
Morgenstern, M.: Existence and explicit constructions of q + 1-regular Ramanujan graphs for every prime power q. J. Combin. Theory Ser. B 62(1), 44–62 (1994)
Polak, M., Ustimenko, V.: On LDPC codes Corresponding to Infinite Family of Graphs A(n,K). In: Proceedings of Federated Conference on Computer Science and Informations Systems, Wrocław, Poland, September 9-12, pp. 567–570 (2012)
Polak, M., Ustimenko, V.: Appendix for article On LDPC codes based on families of expanding graphs of increasing girth without edge-transitive automorphism groups. University of Maria Curie Skłodowska (2014), http://umcs.pl/pl/zaklad-algebry-i-matematyki-dyskretnej,1336.htm
Richardson, T.J., Urbanke, R.L.: The Capacity of Low-Density Parity Check Codes Under Message-Passing Decoding. IEEE Transaction on Informarion Theory 47(2), 599–618 (2001)
Akos, S.: Large Families of Cospectral Graphs. Designs, Codes and Cryptography 21(1-3), 205–208 (2000)
Sipser, M., Spielman, D.A.: Expander codes. IEEE Trans. on Info. Theory 42(6), 1710 (1996)
Shannon, C.E., Warren, W.: The Mathematical Theory of Communication. University of Illinois Press (1963)
Tanner, R.M.: A recursive approach to low density codes. IEEE Transactions on Information Theory IT 27(5), 533–547 (1984)
Ustimenko, V., Woldar, A.: Extremal properties of regular and affine generalized polygons as tactical configurations. Eur. J. Combinator. 24, 99 (2003)
Ustimenko, V.: On linguistic dynamical systems, families of graphs of large girth, and cryptography. Zapiski Nauchnykh Seminarov POMI 326, 214–234 (2005)
Ustimenko, V.: On the K-theory of graph based dynamical systems and its applications. Dopovidi Natsional’noi Akademii nauk Ukrainy 8, 44–51 (2013)
Ustimenko, V.: On extremal graph theory and symbolic computations. Dopovidi Natsional’noi Akademii nauk Ukrainy 2, 42–49 (2013)
Romańczuk, U., Ustimenko, V.: On the key exchange protocol with new cubical maps based on graphs. Annales UMCS Informaticea XI, 11–29 (2011)
Ustimenko, V., Romańczuk, U.: On Extremal Graph Theory, Explicit algebraic constructions of extremal graphs and corresponding Turing encryption machines. In: Yang, X.-S. (ed.) Artificial Intelligence, Evolutionary Computing and Metaheuristics. SCI, vol. 427, pp. 257–285. Springer, Heidelberg (2013)
Weiss, A.: Girths of bipartite sextet graphs. Combinatorica 4(2-3), 241–245 (1984)
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Polak, M., Ustimenko, V. (2014). On LDPC Codes Based on Families of Expanding Graphs of Increasing Girth without Edge-Transitive Automorphism Groups. In: Kotulski, Z., Księżopolski, B., Mazur, K. (eds) Cryptography and Security Systems. CSS 2014. Communications in Computer and Information Science, vol 448. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-44893-9_7
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DOI: https://doi.org/10.1007/978-3-662-44893-9_7
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