How channel bandwidth affect data rate?

Bandwidth is defined as the potential of the data that is to be transferred in a specific period of time. It is the data carrying capacity of the network or transmission medium….Difference between Bandwidth and Data Rate:

Bandwidth	Data Rate
It does not depend on properties of sender or receiver.	While it gets affected by sender or receiver.

Why the actual bandwidth of digital signal is the effective bandwidth is?

Going from a frequency of zero to a frequency of infinity implies all frequencies in between are part of the domain. The bandwidth of a digital signal is infinite.

What is the relationship between bandwidth signal levels and data rate?

Bandwidth is a fixed quantity, so it cannot be changed. Hence, the data rate is directly proportional to the number of signal levels.

Does higher frequency mean higher bandwidth?

Higher Frequencies Have More Bandwidth Higher-frequency transmissions have more bandwidth than lower-frequency transmissions, which means higher-frequency transmissions can send substantially more data between devices in less time.

Why actual bandwidth of digital signal is infinite?

An ideal digital signal has infinitely steep edges. We can compose this signal from sines, one fundamental and a number of harmonics. Neither of those separate sines has infinite steepness. The only way to get our steep edge is by adding an infinite number of harmonics.

Can the receiver bandwidth be less than the modulated signal bandwidth?

The receiver bandwidth should match the bandwidth of the modulated signal for maximum sensitivity. It cannot be less, since a narrower receiver bandwidth will distort the demodulated signal causing intersymbol interference and increasing the bit error rate in digital communications and reducing fidelity and intelligibility of analog signals.

How does bandwidth affect carrier modulation?

For base-band signals, this is pretty obvious: a higher bandwidth means a faster rise time, which means the signal can take on a new value faster. However, the same is true of carrier modulation signals.

Why do we need more bandwidth for data transmission?

The fundamental reason can be loosely stated as “more bandwidth means the sooner you can be surprised”, and only surprises can carry data. For base-band signals, this is pretty obvious: a higher bandwidth means a faster rise time, which means the signal can take on a new value faster.

What increases the bandwidth of a wave?

Anything that deviates from that expected value, whether a change in amplitude, phase, or frequency, increases the bandwidth. The faster it diverges from the “predicted” oscillation, the higher the bandwidth.