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Terms narrowband and wideband are used when we are describing how passband width is related to midband frequency. For example, if bandwidth is only few percents of midfrequency we use term narrowband. When bandwidth is few tens percent or multiple of midfrequency, term wideband is used. Exsact definition does not exist.
Term baseband is used for frequency spectrum of modulating signal, for example.
A method in a radio communication device having a receiver receiving a wideband signal in the presence of narrowband blockers method in direct conversion and intermediate frequency RF receivers including determining power for signal distortion products (40), determining power for a desired signal and the distortion products (41), filtering the signal distortion products with a filter having a bandwidth of rejection, and dynamically adjusting a rejection property (43) as a function of the power for both the desired signal and the signal distortion products. In some embodiments, a determination is made whether a ratio of powers exceeds a threshold (45) as a condition for adjusting the rejection property
base band signals are low fequency signals whereas passband signals are high frequecy signals....narrowband are signals having less bandwidth and wideband are those having high bandwidth..
base band signals are low fequency signals whereas passband signals are high frequecy signals....narrowband are signals having less bandwidth and wideband are those having high bandwidth..
helllo,
in optical communication base band signals are in GHz , so i dont think this is acuurate, in my opinion passband is modulated and baseband is not moudlated
regards.
Term passband is used to describe frequency characteristic of a filter. Like stopband. Baseband is not frequency dependent. It is used to denote modulating signal or composition of signals which has to be transferred. TV analogue signal occupies frequencies from 25Hz up to 5MHz. Audio signal baseband is 20Hz up to 15kHz. And so on.
base band signals are low fequency signals whereas passband signals are high frequecy signals....narrowband are signals having less bandwidth and wideband are those having high bandwidth..
helllo,
in optical communication base band signals are in GHz , so i dont think this is acuurate, in my opinion passband is modulated and baseband is not moudlated
regards.
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/ yeah of course...i agree with your point.....in wireless communication , high frequency carrier will be used to convey low frequency message signal which is called as passband transmission
for ordinary transmission, no modulation i mean no high frequency carrier simply low frequency signal will be transmitted....
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/ Note: almost all mesaage signal are low frequency signals.......
Added after 15 minutes:
you can also the uploaded file for baseband and passband ....
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