DocumentCode :
921226
Title :
Constructing codes with bounded codeword lengths (Corresp.)
Author :
van Voorhis, D.
Volume :
20
Issue :
2
fYear :
1974
fDate :
3/1/1974 12:00:00 AM
Firstpage :
288
Lastpage :
290
Abstract :
When the letter probabilities p_1,p_2,\\cdots ,p_N for a message source S are unknown, it may be imprudent to construct a Huffman code for S based on the relative frequencies f_1, f_2,\\cdots , f_N of the letters in a sample message M . Rather, a more cautious approach is to select an integer b \\geq \\log _2 N and to construct the code C_b which encodes M most efficiently subject to the restriction that codewords are at most b bits long. This correspondence describes an algorithm for calculating C_b in O((b-\\log _2 N)N^2) steps.
Keywords :
Source coding; Block codes; Character generation; Convolutional codes; Laboratories; Military computing; Parity check codes; Polynomials;
fLanguage :
English
Journal_Title :
Information Theory, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9448
Type :
jour
DOI :
10.1109/TIT.1974.1055176
Filename :
1055176
Link To Document :
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