| A | B |
|---|
| Baud Rate | # of signals per second |
| Bandwidth | Capacity of communication Channel |
| Analog | Measured in Hertz |
| Digital | Measured in bits per second, guardband used to remove interference |
| Bandpass | Band of frequencies between channels that are cutout by the guardband |
| Amplitude Modulation | Represents bits of information by changing the amplitude of the sine wave |
| Frequency Modulation | Similar to amplitude, except that the frequency changes are what determine the data |
| Phase Modulation | Changing the Phase of an analog wave to encode data |
| Demodulation | A change in the state of waves frequency, phase, or amplitude to recreate the digital signal |
| Modulation | Refers to putting analog data on a analog line |
| Shift keying | Refers to putting digital data on an analog line. Also uses frequency, amplitude, and phase |
