Analog communication systems use continuous signals to transmit information. These signals can take on any value within a given range and are often represented as sine waves. Analog systems are widely used in applications such as radio broadcasting, television transmission, and telephone systems.
The following table summarizes the key differences between analog and digital communication systems:
| | Analog | Digital | | --- | --- | --- | | Signal type | Continuous | Discrete | | Signal representation | Sine waves | Binary digits (bits) | | Noise susceptibility | High | Low | | Security | Low | High | | Implementation complexity | Low | High | | Error correction | Not required | Required |