FDM (Frequency Division Multiplexing)

Frequency Division Multiplexing (FDM) is a technique that allows multiple signals to share the same communication channel simultaneously. It works by assigning each signal a different frequency band within the overall spectrum. Think of it like multiple radio stations broadcasting at different frequencies—each station's signal doesn't interfere with the others. At the receiving end, filters pick out each signal based on its frequency band, allowing multiple conversations or data streams to coexist efficiently on one wire or wireless link without mixing or interference. This method maximizes the use of available bandwidth and enables simultaneous transmission of multiple data streams.