On the basis of studyingonwirelesscommunicationchannels, this paper discusses the appearanceofISI, introducesNyquistfirstruleand the theoryof time-domain equalizer.
Some years later, Claude Shannon (also of Bell Labs) would consolidate many of the prevailing ideas on the subject in his 1948 paper "A Mathematical Theory of Communication" which would reference the work of Nyquist significantly.