Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published December 1972 | Published
Journal Article Open

Spectra and Efficiency of Binary Codes Without DC

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

Published - 01091308.pdf

Files

01091308.pdf
Files (290.9 kB)
Name Size Download all
md5:957c7159a82297b05468660c05ed1b76
290.9 kB Preview Download

Additional details

Created:
August 19, 2023
Modified:
October 25, 2023