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Recent Preprints:


Explicit Construction of LDPC Codes with No 4-Cycles

With Jon-Lark Kim, Uri N. Peled, Irina Perepelitsa and Shmuel Friedland 

A Note on Formally Self-Dual Even Codes of Length Divisible by 8

With Jon-Lark Kim 

Reprints

Designs in Additive Codes over GF(4)

with Jon-Lark Kim
Designs, Codes and Cryptography, 30, 2003, 187-199

Decoding binary R(2,5) by hand

with Philippe Gaborit and Jon-Lark Kim
 Discrete Math. 264, 2003, 55-73

 Explicit Construction of LDPC Codes with Girth at Least Six

 With Jon-Lark Kim, Uri N. Peled and Irina Perepelitsa
 Appeared in  Proceedings of the 40th Allerton Conference on Communication, Control and  Computing, UIUC,   Oct. 2002


Projections of binary linear codes onto larger fields 

with Jon-Lark Kim and Keith Mellinger

SIAM J. Discrete Math, Vol. 16, No.4, pp.591-603, 2003  

Decoding some doubly-even self-dual [32,16,8] codes by hand                
               with Jon-Lark Kim
               Codes and Designs,  Proceedings of a conference honoring Professor Dijen K. Ray-Chaudhuri,
               The Ohio State University, May 18-21, 2002, pp.165-178.

          Type II codes over GF(4)

               with Philippe Gaborit , Patrick Sole and Oliver Atkin
               Appeared in Finite Fields and Their Applications 8, 171-183 (2002)

On the classification of extremal even formally self-dual codes of lengths 20 and 22

with Joe Fields, Philippe Gaborit and W.C. Huffman
Appeared in Discrete Applied Math., Vol. 111 (2001), 75-86.

Designs in Additive Codes over GF(4)

with Jon-Lark Kim
Appeared in Proceedings of the 38th Allerton Conference on Communication, Control and Computing, UIUC, Oct. 2000, 1010-1018.

On additive GF(4) codes

with Philippe Gaborit , W. Cary Huffman and Jon-Lark Kim
Appeared in DIMACS Workshop on Codes and Association Schemes, DIMACS Series in Discrete Math. and Theo. Computer Science, A.M.S., Vol. 56 (2001), 135-149.

Decoding some doubly-even self-dual [32,16,8] codes by hand

with Jon-Lark Kim
Proceedings of XXVth Ohio State-Denison conference,  Ohio State University, May, 1999

On the classification of extremal even formally self-dual codes

with Joe Fields, Philippe Gaborit and W.C. Huffman
Appeared in Design, Codes and Cryptography, Vol. 18, No. 1/2/3, 125-148 (1999).

On the clasification of extremal additive codes over GF(4)

with Philippe Gaborit , W. Cary Huffman, and Jon-Lark Kim
Appeared in Proceedings of the 37th Allerton Conference on Communication, Control and Computing, UIUC, Sep. 1999, 535-544.

On the Classification of Formally Self-Dual Codes

with Joe Fields, Philippe Gaborit and W.C. Huffman
Appeared in Proceedings of the 36th Allerton Conference on Communication, Control and Computing, UIUC, Oct. 1998, 566-575.

Split Weight Enumerators of Extremal Self-Dual Codes

with Joe Fields
Appeared in Proceedings of the 35th Allerton Conference on Communication, Control and Computing, UIUC, Oct. 1997, 422-431.

All Z4 Codes of Length 15 or Less Are Known

with Joe Fields, Philippe Gaborit and Jeffrey S. Leon.
Appeared in IEEE Transactions on Information Theory, vol. 44, no. 1. (1998)

Covering Radius

with Richard A. Brualdi and Simon Litsyn.
Chapter 2 in "The Handbook of Coding Theory", North-Holland, Elsevier, (1998)

Coding Constructions

Chapter 8 in "The Handbook of Coding Theory", North-Holland, Elsevier, (1998)

Constraints on Weights in Binary Codes

Appeared in Applicable Algebra in Engineering, Communication and Computing, 8, 411-414 (1997).

Cyclic Self-Dual Z4-Codes

with Patrick Sole and Zhongqiang Qian.
Appeared in Finite Fields and Their Applications 3, 48-69 (1997)

All Z4 Codes of Type II and Length 16 Are Known

with Jeffrey S. Leon and Joe Fields.
Appeared in Journal of Combinatorial Theory, Series A vol.78, no. 1 (1997) pp 32-50.

Cyclic Codes and Quadratic Residue Codes over Z4

with Zhongqiang Qian.
Appeared in IEEE Trans. Inform. Theory vol. 42, no. 5 (1996) pp 1594-1600.

Coding Theory:

       

          Fundamentals of Error-Correcting Codes (with W. C. Huffman), 2003
         
          Published by Cambridge University Press

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