Home » Computer Network

FDMA and TDMA: Channelization Processes in Computer Network

Computer Network | TDMA and FDMA: In this tutorial, we will learn about two channelization processes for multiple accesses, namely TDMA, FDMA. By Radib Kar Last updated : May 05, 2023

What is FDMA (Frequency-Division Multiple Access)?

FDMA (Frequency-Division Multiple Access) is a channelization process based on frequency division for multiple access. In frequency-division multiple access (FDMA), the available bandwidth is divided into frequency bands. Each station is allocated a channel bandwidth to send its data. Specifically speaking, each band of the link is reserved for a specific station, and it belongs to the station for all the time period.

Each station uses a bandpass filter to confine the transmitter frequencies within the specified band assigned to it. To prevent station interferences between stations, the allocated bands are separated from each another by small guard bands.

What is TDMA (Time-Division Multiple Access)?

TDMA (Time-Division Multiple Access) is a channelization process based on time-slot division for multiple access. In time-division multiple access (TDMA), the stations share the total bandwidth of the channel in time beings. Each station is allocated a time slot during which it can send data using the whole bandwidth. Each station transmits its data in its assigned time slot only.

But the main problem with TDMA is synchronization between different stations.

Another channelization process is Code-Division Multiple Access (CDMA) | Computer Networks

---