Content deleted Content added
change of notation for consistency with article Discrete-time Fourier transform |
|||
Line 238:
Similarly, Nyquist's name was attached to ''[[Nyquist rate]]'' in 1953 by [[Harold Stephen Black|Harold S. Black]]:
{{blockquote|If the essential frequency range is limited to <math>B</math> cycles per second, <math>2B</math> was given by Nyquist as the maximum number of code elements per second that could be unambiguously resolved, assuming the peak interference is less than half a quantum step. This rate is generally referred to as '''signaling at the Nyquist rate''' and <math>\frac 1 {2B}</math> has been termed a ''Nyquist interval''.|Harold Black, ''Modulation Theory''<ref>{{cite book |first=Harold S. |last=Black |title=Modulation Theory |year=1953 }}</ref> (bold added for emphasis; italics as in the original)}}
According to the ''[[Oxford English Dictionary]]'', this may be the origin of the term ''Nyquist rate''. In Black's usage, it is not a sampling rate, but a signaling rate.
| |||