2009-11-20 16:09
People to commemorate the two took us into and out of the digital world, Nyquist and Shannon
Nyquist rate: bandlimited channels without interference between the maximum bit rate can be transmitted, i.e. twice the channel bandwidth.
Therefore the use of Shannon Nyquist work on the basis of the sampling theorem, also called Nyquist - Shannon sampling theorem, and therefore also refers to twice the Nyquist rate of the highest frequency signal, i.e., the sampled signal without aliasing The minimum sampling rate.
Nyquist frequency: This frequency is half the sampling rate of the system, the frequency component signals exceeding the Nyquist frequency aliasing will occur in the sampling.
http://en.wikipedia.org/wiki/Nyquist_ISI_criterion
http://en.wikipedia.org/wiki/Nyquist_rate
http://en.wikipedia.org/wiki/Nyquist%E2%80%93Shannon_sampling_theorem