nyquist bandwidth criterion

Status
Not open for further replies.
E

erece

Junior Member level 3
Joined
Mar 17, 2011
Messages
28
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,470
According to Nyquist bandwidth constraint for transmission without ISI , the minimum channel bandwidth should be R/2 symbols /sec, where R symbols /sec is the transmisson rate.
If this is correct then i want to know that if this channel cannot support full transmission rate then do we use this model ??
 

The Nyquist figure is also tossed around in digital sound processing. Your sample rate must be, at minimum, twice the frequency of the highest frequency you intend to process.

As a guideline it's prominent today because it emerged as a usable concept as the technology was in development.

Not that it's a be-all and end-all guideline. Since it's possible for your sampling window to catch a waveform at zero crossings. Then you get nothing.

Or suppose the waveform is slightly different from half the sample rate. Then you get a subsonic rumble, or other such incongruous result.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…