Which multiplexing technique between fdm and tdm

There are various multiplexing techniques available as stated under:. Multiplexing is a mode of transportation of the signal in a network. It helps in effective communication of the information present in either Analog or digital form over a given channel. It also helps us optimize the transmission cost for transmitting the information.

The data coming from various stream is divided into a unit which is allocated a given time slot for transmission on a round-robin basis. Once the allocation of each stream is completed then again, the fifth slot is allotted to data coming from the 1 st input stream. This process goes on until the entire data streams are transmitted.

FDM: Let us consider an example for FDM here all the signals are transmitted at the same time but are allocated a separate frequency band. Each frequency band is separated by a suitable gap so as to avoid overlapping. This gap frequency is referred to as guard bands. Through this platform, I am also sharing my professional and technical knowledge to engineering students. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment.

Post comment. Skip to content. Facebook page opens in new window Twitter page opens in new window Instagram page opens in new window YouTube page opens in new window. Once this time has elapsed, u2 can transmit data for a time t0. When u2 transmits data, other users cannot transmit data. Then u3 transmits the data for t0 time.

In short, TDM divides time and not bandwidth between users. They can only transmit signals in the available time slot. Since only one signal is transmitted at a time, crosstalk in TDM is minimal.

Fiber-optic communication uses WDM. The concept of WDM relates to physics. When a beam of white light passes through a prism, it splits into individual colored light beams through the prism. Each beam of light has different wavelengths. This scenario also works vice versa. The individual color beams combine to generate a beam of white light. The WDM combines several light beams from channels using a multiplexer and sends them in the form of a single light beam through a strand of optical fiber.

On reception, the demultiplexer separates the single light into several light beams and sends them to their own channels. Therefore, multiplexing and demultiplexing involve optical signals. Reference: 1. Agarwal, Tarun et al.