Published December 1972
| Published
Journal Article
Open
Spectra and Efficiency of Binary Codes Without DC
- Creators
- Franklin, J. N.
- Pierce, J. R.
Chicago
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Abstract
In digital transmission of binary (+1,-1) signals it is desirable that the stream of pulses which constitutes the signal have no dc, that is, that the power spectrum go to zero at zero frequency. It is desirable that, for a given efficiency or entropy, the spectrum rise slowly with increasing frequency. We have obtained the spectrum for selected blocks with equal numbers of plus ones and minus ones. For a given efficiency, this is better than the spectrum obtained by Rice, using the Monte Carlo method, for block encoding using polarity pulses. An algorithm given by Schalwijk should allow simple encoding into selected blocks.
Additional Information
© 1972 IEEE. Paper approved by the Data Communications Committee of the IEEE Communications Society for publication without oral presentation. Manuscript received May 31, 1972; revised June 27, 1972.Attached Files
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- Eprint ID
- 76543
- Resolver ID
- CaltechAUTHORS:20170412-164950437
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