What is Frequency Division Duplex (FDD)?

What does FDD stand for?

Frequency division Duplex (FDD) is a technique wherein separate frequency bands are used on the Transmitter and Receiver aspect.

Because the FDD approach Makes use of exclusive frequency bands for send and get hold of operations, the sending and receiving inFormation indicators don’t interfere with each other. This makes FDD a better choice than Time Division Duplex (TDD) for symMetric visitors which includes voice programs in Broadband Wireless Networks.

What Does Frequency Division Duplex Mean?

FDD is a Method where the transmitter and receiver operate at one-of-a-kind Carrier frequencies. For example, in Cell Wireless Networks, one Block of the electromagnetic spectrum is allotted for Uplink, which consists of information from Mobile Phones to a Base Station. A different bLock of the spectrum is allotted to Downlink, carrying Records from a base station to Cellular telephones.

This term is utilized in ham radio operations frequently, where Operators touch a Repeater station. The station in this example sends and gets transmissions at the identical time by means of altering the frequencies at which alerts are transmitted and acquired.

Examples of FDD structures consist of the following:

• Asymmetric Digital Subscriber Line (ADSL) and very-high-bitrate virtual Subscriber line (VDSL)
• Cellular sySTEMs, inclusive of the UMTS/WCDMA Frequency Division Duplexing Mode and the CDMA2000 Device
• IEEE 802.Sixteen WIMAX Frequency Division Duplexing mode