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In VSAT network signals are sent from the hub in specific time slots through a method called TDM. TDM stands for ________. 
1. Total Division Multiplication
2. Time Division Multiplication
3. Time Division Multiplexing
4. Time Division Modulation

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Correct Answer - Option 3 : Time Division Multiplexing

In VSAT network signals are sent from the hub in specific time slots through a method called TDM. TDM stands for Time Division Multiplexing.

VSAT Network:

  • VSAT networks have gained in popularity due to their unlimited geographic reach, efficient transmission and reception of data.
  • A satellite network consists of two or more earth stations (VSAT) and satellite re-transmitter (Transponder).
  • VSAT stands for “Very Small Aperture Terminal” and its purpose is to transmit and receive satellite transmissions.
  • A VSAT comprises a dish antenna, a transceiver (or a combination of BUS and LNB) and a satellite router (modem).
  • Receive-only VSAT terminal may not include a transmitter (BUC).
  • A VSAT terminal can receive and transmit data, voice and video information and is typically connected to an end user’s equipment via LAN port of the satellite router.
  • The router processes an incoming traffic, packetize it and convert into continuous SCPC (Single Channel Per Carrier) or burstable TDMA (Time Division Multiple Access) modulated carrier. 

TDM (Time Division Multiplexing):

  • TDM (Time Division Multiplexing) is a multiplexing technique where multiple bit streams are transmitted simultaneously as sub-channels within a single carrier.
  • Data transmission in such a channel is separated into fixed time intervals (timeslots) for each sub-channel.

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