What does FDM stand for in the context of multiplexing?

FDM stands for Frequency Division Multiplexing, which is a technique used to transmit multiple signals over a single communication channel by dividing the available bandwidth into distinct frequency ranges for each signal. This allows for simultaneous transmission of multiple data streams without interference, as each signal occupies its unique frequency band.

In the context of telecommunications and broadcasting, FDM is essential because it optimizes the usage of available frequency spectrum, enabling efficient data transmission in various applications, such as radio and television broadcasting, DSL internet connections, and satellite communications. The method involves the modulation of each data signal onto a distinct carrier frequency, which is then combined into a composite signal for transmission. At the receiver's end, the signals are demultiplexed, allowing each original signal to be extracted from the composite stream.

This understanding highlights why Frequency Division Modulation, Frequency Distribution Management, and Frequency Deployment Multiplexing do not represent the established term associated with this multiplexing technique, as they do not accurately describe the process of managing multiple data streams within one channel using frequency allocation.