The construction of binary Huffman equivalent codes with a greater number of synchronising codewords Online publication date: Thu, 16-Feb-2012
by Yuh-Ming Huang; Sheng-Chi Wu
International Journal of Ad Hoc and Ubiquitous Computing (IJAHUC), Vol. 9, No. 1, 2012
Abstract: An inherent problem with a Variable-Length Code (VLC) is that even a single bit error can cause a loss of synchronisation, and thus lead to error propagation. Codeword synchronisation has been extensively studied as a means to overcome this drawback and efficiently stop error propagation. In this paper, we first present the sufficient and necessary conditions for the existence of binary Huffman equivalent codes with the shortest, or at most two shortest, synchronising codeword(s) of length m + 1, where m (>1) is the shortest codeword length. Next, based on the results, we propose a unified approach for constructing each of these binary Huffman equivalent codes with the shortest, or at most two shortest, synchronising codeword(s) of length m + 1, if such a code exists for a given length vector.
Online publication date: Thu, 16-Feb-2012
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