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Spectrum shaping with binary dc^2 -constrained channel codes
Abstract and Figures
A method is presented for designing binary channel codes in such a way that both the power spectral density function and its second-derivative vanish at zero frequency. Recursion relations are derived to determine the number of codewords that can be used in this coding scheme. A simple algorithm for encoding and decoding codewords is developed. The performance of the new codes is compared with that of classical channel codes designed with a constraint on the unbalance of the number of transmitted positive and negative pulses.
Figures - uploaded by Kees Schouhamer Immink
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