system bandwidth and signal bandwidth

[Ramakrishna47]

hi every one,

what is the difference of system bandwidth and signal bandwidth?

 

[kotta]

System bandwidth I believe is the overall bandwidth (the processor bandwidth), where as signal bandwidth is the actual frequency of communication.

 

[LvW]

hi every one,

what is the difference of system bandwidth and signal bandwidth?

I hope this is no joke.
System bandwidth is the bandwidth of a system and signal BW is the occupied BW of a signal.
Is there anything else to say?

 

[Ramakrishna47]

thanks LvW

if i want to design baseband filter ,then what bandwidth i have to consider

 

[themaccabee]

Hi i think if the input signal X is fed to a system with a transfer function G, the output Y is obtained by modifying X by the system in accordance with it transfer function G.Say now if we are increasing the input signal frequency of X , but since the system has a finite bandwidth the output modification(Y=G*X) will be correctly done only up to a certain frequency say f. So this 'f' is the system bandwidth.


For signal band width of X , it is determined by the highest frequency content present in it.

Im i correct??
Regards

 

[LvW]

thanks LvW

if i want to design baseband filter ,then what bandwidth i have to consider

For my opinion, this is not really a question that can be answered.
Some basics:
A group of frequencies (e.g. a modulated signal) consists of some frequencies that are wanted (they belong to the signal) - and, unfortunately, in most cases also of some unwanted components (e.g. harmonics due to non-linearities).
This is the case of a filter - and you have to decide: What is the task of the filter?
In detail: Which range of frequencies shall pass and which range has to be suppressed?
This leads to one of the basic filter types: Lowpass, highpass, bandpass, bandstop.
So, it's up to you (the user) to specify the requirements to the filter (transmission bandwidth, frequencies to be attenuated by how many dB?)

You see, it's to early to give you a specific answer, OK?

 

[Syncopator]

what is the difference of system bandwidth and signal bandwidth?

System bandwidth is the range of frequencies which a system can carry, or, more correctly, it is the difference between the maximum and minimum frequencies.

Signal bandwidth is the range of frequencies associated with a signal, or, more correctly, it is the difference between its maximum and minimum frequencies.