Bandwidth and Frequency

[David83]

Hi,

What is the relation between carrier frequency and the bandwidth of the channel? Is the relation is that the higher the frequency is, the higher the data rate (bandwidth)? I read somewhere that some channels have limited bandwidth due to frequency dependent attenuation. What does this mean?

Thanks

 

[chitturi_sb]

as per my understanding, bandwidth is the frequency range occupied by the carrier signal. higher the bandwidth then higher can be the datarate.
Another thing could be higher the carrier frequency less would be distortions and hence bandwidth can be efficently utilized.
e.g. take HF frequences (2 - 30Mhz) Lot of things around generate those freq and so more distortions, less data rates possible.