Bandpass line codes for q-ary alphabets |
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| Authors: | Perkins S. |
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| Affiliation: | Dept. of Math., London Univ., UK; |
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| Abstract: | The author considers codes with higher order spectral zeros at DC for q-ary alphabets. A recurrence relation is derived for the number of codewords that exist for a given length and moment, which enables the correction of some recently published tables for q=3 and q=5. Some minimum distance properties are determined for first order codes and any alphabet, and again some recently published results are corrected.<> |
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