multipleksointitekniikka

Multipleksointitekniikka is a telecommunications term referring to methods used to combine multiple signals or data streams into a single channel. This allows for more efficient use of communication infrastructure, such as fiber optic cables or radio frequencies. By multiplexing, a single physical connection can carry information from many different sources simultaneously.

There are several primary types of multiplexing techniques. Frequency Division Multiplexing (FDM) divides the communication channel into distinct frequency bands, with each signal assigned its own band. Time Division Multiplexing (TDM) divides the channel into time slots, and each signal is allocated a specific time slot to transmit. Code Division Multiplexing (CDM) assigns a unique code to each signal, allowing them to share the same frequency band and time slot but be distinguished by their codes. Wavelength Division Multiplexing (WDM) is a variation of FDM used in optical fibers, where different wavelengths of light carry different signals.

Multiplexing is fundamental to modern communication networks, including telephone systems, cellular networks, and the internet. It enables service providers to transmit a large volume of data and voice traffic over limited physical resources, thereby reducing costs and increasing capacity. The choice of multiplexing technique depends on the specific application, the type of data being transmitted, and the characteristics of the communication channel.