Method and apparatus for generating dc-free sequences

Details Method and apparatus for generating dc-free sequences Method and apparatus for generating dc-free sequences

H - Electricity

04

L

H04L 1/22 (2006.01) H03M 5/14 (2006.01) H04L 25/49 (2006.01)

Patent

CA 2182428

A method an apparatus generates a channel codeword based on codewords with arbitrary block digital sums. Respective portions of the channel codeword are generated based on respective sets of input symbols, and the channel codeword is generated from the portions in accordance with another set of input symbols. The portions are advantageously codewords, comprising symbols, generated by selecting, for each set of input symbols, a codeword from a codebook and by adapting, as for example by ordering or by inverting symbols in, the codewords to form the channel codeword.

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