Journal Papers

 

M. Dimitrov, T. Baicheva and N. Nikolov, Efficient generation of low autocorrelation binary sequences, IEEE Signal Processing Letters, vol. 27, pp. 341-345, 2020.

T. Baicheva and S. Topalova, Classification of optimal (v, k, 1) binary cyclically permutable constant weight codes with k=5, 6 and 7 and small lengths, Designs, Codes and Cryptography, vol. 87 (2-3), pp. 365-374, 2019.

T. Baicheva and S. Topalova, Classification of strongly conflict-avoiding codes, IEEE Communications Letters, vol. 22, issue 12, pp. 2415 - 2418, 2018.

T. Baicheva and S. Topalova, On Tight Optimal Conflict-avoiding Codes for 3, 4, 5 and 6 Active Users, Cybernetics and Information Technologies, Institute of Information and Communication Technologies - BAS, vol. 18, no. 5, pp. 5-11, 2018.

T. Baicheva and M. Dimitrov, A Software Tool ASR for a posteriori Cryptanalysis on Public Keys Generated with RSA, Information & Security: An International Journal, vol. 37, 2017.

E. Kolev and T. Baicheva, Minimal coverings of  (0,1,2)n with spheres of radius n, Utilitas Mathematica,  Vol. 103,  pp. 209-216, 2017.

T. Baicheva and S. Topalova, Classification of optimal conflict-avoiding codes of weights 6 and 7, Electronic Notes in Discrete Mathematics, Vol. 57,  pp. 9-14, March 2017.

T. Baicheva and S. Topalova, Optimal conflict-avoiding codes for 3,4 and 5 active users, Problems of Information Transmission, Vol. 53, No. 1, pp. 42-50, 2017.

T. Baicheva and S. Topalova, Construction and classification of optimal (v,5,3,1) optical orthogonal codes, Internat. Scientific Journal Science. Business. Society., vol. 5, pp. 7-8, 2016.

T. Baicheva and S. Topalova, Classification of maximal optical orthogonal codes of weight 3 and small lengths, Serdica Journal of Computing, vol. 9, No. 1, pp. 83-92, 2015.

T. Baicheva and S. Topalova, Optimal (v, 5, 2, 1) optical orthogonal codes of small v, Applical Algebra in Engeneering Communication and Computing, vol. 24, numbers 3-4, pp. 165-177, 2013.

T. Baicheva and S. Topalova, Optimal (v,4,2,1) optical orthogonal codes with small parameters,  Journal of Combinatorial Designs, vol. 20 (2), pp. 142-160, 2012.

T. Baicheva, All binary linear codes of lengths up to 18 or redundancy up to 10 are normal, Advances in Mathematics of Communications, vol. 5, No 4, pp. 681-686, 2011.

T. Baicheva and S. Topalova, Classification of optimal (v,4,1) binary cyclically permutable constant weight codes and cyclic S(2,4,v) designs with v≤76, Problems of Information Transmission, vol. 47, No 3, pp.224-231, 2011.

T. Baicheva and I. Bouyukliev, On the least covering radius of the binary linear codes of dimension 6,  Advances in Mathematics of Communications, vol.4, No 3, pp. 399-404, 2010.

T. Baicheva, I. Bouyukliev, S. Dodunekov, and V. Fack, Binary and Ternary Quasi-perfect Codes with Small Dimensions, IEEE Trans. on Inform. Theory, vol. 54, issue 9, pp. 4335-4339, 2008.

T. Baicheva, Determination of the best CRC codes with up to 10-bit redundancy,  IEEE Trans. on Communic., vol. 56, issue 8, pp. 1214-1220, 2008.

T. Baicheva and F. Salam, CRC codes for error control, Mathematica Balkanica, New series vol. 21, Fasc. 3-4, pp. 377-388, 2007.

T. Baicheva, On the error correcting performance of some binary and ternary linear codes,  Serdica, Journal of Computing, vol.1, pp. 157-170, 2007.

T. Baicheva, I. Boyukliev, S. Dodunekov and W. Willems, Teaching linear codes, Mathematica Balkanica, New Series vol. 19, pp. 3-16, 2005.

E. Velikova and T. Baicheva, On the computation of the weight distribution of the cosets of cyclic codes, Annuaire de l'Université de Sofia "St.~Kl.~Ohridski", vol. 97, pp. 109-114, 2005.

T. Baicheva, I. Boyukliev, S. Dodunekov and W. Willems, Teaching linear codes, Mathematica Balkanica, New Series vol. 19, pp. 3-16, 2005.

T. Baicheva, I. Boyukliev, S. Dodunekov and W. Willems, On Reed-Solomon and Glynn $[10,5,6]_9$ codes, Mathematica Balkanica, New Series vol. 18, pp. 67-78, 2004.

T. Baicheva and I. Gancheva, Computer search for ternary cyclic and negacyclic LUEP codes of lengths up to 26, Mathematica Balkanica, New Series vol. 18, pp. 79-80, 2004.

T. Baicheva and V. Varek, On the least covering radius of binary linear codes with small lengths, IEEE Trans. on Inform. Theory, vol. 49, No. 3, pp. 738-740, 2003.

T. Baicheva, S. Dodunekov and R. Koetter, On the Performance of the Ternary [13,7,5] Quadratic-Residue Codes, IEEE Trans. Inform. Theory, vol. 48, No. 2, pp. 562-564, 2002.

T. Baicheva, On the covering radius of ternary negacyclic codes with length up to 26, IEEE Trans. on Inform. Theory, vol. 47, No. 1, pp. 413-416, 2001.

T. Baicheva, S. Dodunekov and P. Kazakov, On the Undetected Error Probability Performance of Cyclic Redundancy-Check Codes of 16-bit Redundancy, IEE Proc. Communications, vol. 147, No 5, pp. 253-256, 2000.

P. Östergård, T. Baicheva and E. Kolev, Optimal Binary One-error-correcting Codes of Length 10 have 72 Codewords, IEEE Trans. Inform. Theory, vol. 45, No. 4, pp. 1229-1231, 1999.

T. Baicheva, S. Dodunekov and P. Kazakov, On the Cyclic Redundancy-Check Codes with 8-Bit Redundancy, Computer Communications, vol. 21, pp. 1030-1033, 1998.

T. Baicheva, The Covering Radius of Ternary Cyclic Codes with Length up to 25, Designs, Codes and Cryptography, vol.13, pp. 223-227, 1998.

T. Baicheva and E.Velikova, Covering Radii of Ternary Linear Codes of Small Dimensions and Codimensions, IEEE Trans. Inform. Theory, vol. 43, pp. 2057-2061, 1997.

 

 

Papers in Conference Proceedings

T. Baicheva and P. Kazakov, CRC selection for decoding of CRC-polar concatenated codes, ACM ICPS - 9-th Balkan Conference in Informatics, Sofia, Bulgaria, 26-28, September, 2019, Article 27.

T. Baicheva and S. Topalova, On the diffusion property of the Improved Generalized Feistel with different permutations for each round, Proc. of 8th International Conference on Algebraic Informatics, Niŝ, Serbia, June 30–July 4, 2019, LNCS 11545, pp. 38-49.

M. Dimitrov, T. Baicheva and G. Ivanov, Implementation of RSA attack using 2-dimensional lattices by constructing hypotheses of keys with low Hamming weight, presented at Training School  on Cryptanalysis of Ubiquitous Computing Systems, 16-20 April 2018, Azores, Portugal, available at EXTENDED ABSTRACTS, Paper 21,

             https://www.cryptacus.eu/en/events/training-school-2018/pitches-and-posters/

T. Baicheva, S. Topalova, On the size of optimal strongly conflict-avoiding codes for 3, 4 and 5 active users, Proc. of  Eighth International Workshop on Optimal Codes and Related Topics, Sofia, Bulgaria, July 2017, pp. 11-16.

T. Baicheva, M. Dimitrov, Cryptanalysis on short messages encrypted with M-138A cipher machine, Proc. of  Eighth International Workshop on Optimal Codes and Related Topics, Sofia, Bulgaria, July 2017, pp. 5-10.

T. Baicheva and S. Topalova, New perfect difference families, Proc. of the International Workshop on Algebraic and Combinatorial Coding Theory, Svetlogorsk, Russia, pp. 18-23, 2014.

E. Kolev and T. Baicheva, About the inverse football pool problem for 9 games, Proc of Seventh Int. Workshop on Optimal Codes and Related Topics, Albena, Bulgaria, pp. 125 – 133, 2013.

T. Baicheva and S. Topalova, Optimal (v, 3, 1) binary cyclically permutable constant weight codes with small v, Proc. of the International Workshop on Algebraic and Combinatorial Coding Theory, Primorsko, Bulgaria, pp. 41-46, 2012.

T. Baicheva and S. Topalova, Classification of optimal (v,4,1) optical orthogonal codes with v<=76, Proc. of the International Workshop on Algebraic and Combinatorial Coding Theory, Novosibirsk, Russia, pp. 26-30, 2010.

T. Baicheva, Normality of some binary linear codes, Proc. of the International Workshop Optimal Codes and Related Topics, Varna, Bulgaria, pp. 5-10, 2009.

T. Baicheva, I. Bouyukliev, Stefan Dodunekov and V. Fack, Binary and ternary quasi-perfect codes with small dimensions, Proc. of the International Workshop Optimal Codes  and Related Topics, White Lagoon, Bulgaria, pp.13-18, 2007.

T. Baicheva and F. Sallam, Error control performance of CRC codes with up to 8 bit redundancy, Proc. of the International Workshop on Algebraic and Combinatorial Coding Theory, Zvenigorod, Russia, pp. 11-14, 2006.

T. Baicheva and F. Sallam, On the error detection performance of some CRC codes, Proc. of the workshop 'Mathematics, Informatics and Computer Sciences', Veliko Tarnovo, Bulgaria, pp. 107-110, 2006.

T. Baicheva and I. Boyukliev, On the ternary projective codes with dimensions 4 and 5, Proc of the International Workshop on Algebraic and Combinatorial Coding Theory, Kranevo, Bulgaria, pp. 34-39, 2004. (pdf)

T. Baicheva, The Newton radius of some binary and ternary cyclic codes, Proc of the International Workshop on Algebraic and Combinatorial Coding Theory, Tsarskoe Selo, Russia, pp. 18-21, 2002. (pdf, List of codes)

T. Baicheva, Binary and ternary linear codes which are good and proper for error correction, Proc of the International Workshop on Algebraic and Combinatorial Coding Theory, Bansko, Bulgaria, pp. 55-60, 2000. (pdf)

T. Baicheva, S. Dodunekov and P. Kazakov, On the error detection performance of some standardized CRC codes, Proc.of the Int. Workshop TELECOM, St. Konstantin, Bulgaria, 1998.

T. Baicheva, On the least covering radius of some binary linear codes, Mathematics and Education in Mathematics, pp. 144-149, 1998.

T. Baicheva, Computer Tools for Determining the Covering Radius of Ternary Linear Codes, Mathematics and Education in Mathematics, pp. 78-81, 1997.

T. Baicheva, Least Covering Radius of Two-dimensional Codes over GF(3) and GF(4), Proc. of the International Workshop on Optimal Codes, Sozopol, Bulgaria, pp. 7-10, 1995.