Channel Capacity - is this only for discrete/digital signals?

1. What is meant by channel capacity?
2. Are digital signals continuous or discrete?
3. What is channel capacity measured in?
4. What is discrete in digital signal?

What is meant by channel capacity?

The channel capacity, C, is defined to be the maximum rate at which information can be transmitted through a channel. The fundamental theorem of information theory says that at any rate below channel capacity, an error control code can be designed whose probability of error is arbitrarily small.

Are digital signals continuous or discrete?

What Are Digital Signals? Unlike analog signals, digital signals are not continuous, but signals are discrete in value and time. These signals are represented by binary numbers and consist of different voltage values.

What is channel capacity measured in?

C = S η log2 e = 1.44 S η . This gives the maximum information transmission rate possible for a system of given power but no bandwidth limitations.

What is discrete in digital signal?

A digital signal is a type of continuous signal (discrete signal) consisting of just two states, on (1) or off (0). In computer systems any waveform that switches between two voltage levels representing the two states of a Boolean value (0 and 1) is called a digital signal (see Fig. 3.53).