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A new data transmission technique has been evolved, which has the speed capability of the quaternary systems and, at the same time, promising performance. An important advantage of this technique is that the amount of circuitry required and the degree of complexity are relatively low, being not much more than for a straight binary system and much less than for a typical quaternary system. The process is sufficiently general so that it is applicable to serial transmission over wire lines and parallel transmission over high-frequency radio circuits.
American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the (Volume:82 , Issue: 2 )
Date of Publication: May 1963