J Academy

The time-division multiplexing (TDM) includes sharing of the time through utilizing time slots for the signals. On the other hand, frequency-division multiplexing (FDM) involves the distribution of the frequencies, where the channel is divided into various bandwidth ranges (channels). Analog signal or Digital signal any could be utilized for the TDM while FDM works with Analog signals only. Framing bits  (Sync Pulses) are used in TDM at the start of a frame in order to enable synchronization. As against, FDM uses  Guard bands  to separate the signals and prevent its overlapping. FDM system generates different carriers for the different channels, and also each occupies a different frequency band. In addition, different bandpass filters are required. On the other hand, the TDM system requires identical circuits. As a result, the circuitry needed in FDM is more complex than needed in TDM. The utilization of physical link in case of TDM is more efficient than in FDM. ...

Data Communication and Networking by Forouzan

Parameter Synchronous TDM Statistical TDM Working In Synchronous TDM data flow of each input connection is divided into units and each input occupies one output time slot. In Statistical TDM slots are allotted dynamically. i.e. input line is given slots in output frame if and only if it has data to send. No. of Slots In Synchronous TDM no. of slots in each frame are equal to no. of input lines. In Statistical TDM, No. of slots in each frame are less than the no. of input lines. Buffers Buffering is not done, frame is sent after a particular interval of time whether someone has data to send or not. Buffering is done and only those inputs are given slots in output frame whose buffer contains data to send. Addressing Slots in Synchronous TDM carry data only and there is no need of addressing. Synchronization and pre assigned relationships bet...

1ST IA QUESTION PAPER 1ST IA SCHEME and SOLUTION

MODULE1 NOTES MODULE 2 NOTES MODULE 3 NOTES