On the Relationships among Optimal Symmetric Fix-Free Codes Conference Paper uri icon


  • Symmetric fix-free codes are prefix condition codes in which each codeword is required to be a palindrome. Their study is motivated by the topic of joint source-channel coding. Although they have been considered by a few communities they are not well understood. In earlier work we used a collection of instances of Boolean satisfiability problems as a tool in the generation of all optimal binary symmetric fix-free codes with n codewords and observed that the number of different optimal codelength sequences grows slowly compared with the corresponding number for prefix condition codes. We demonstrate that all optimal symmetric fix-free codes can alternatively be obtained by sequences of codes generated by simple manipulations starting from one particular code. We also discuss simplifications in the process of searching for this set of codes. 2013 IEEE.

name of conference

  • 2013 Data Compression Conference

published proceedings


author list (cited authors)

  • Yazdi, S., & Savari, S. A.

citation count

  • 3

complete list of authors

  • Yazdi, SM Hossein Tabatabaei||Savari, Serap A

editor list (cited editors)

  • Bilgin, A., Marcellin, M. W., Serra-Sagrist√†, J., & Storer, J. A.

publication date

  • March 2013