IDR | Intermediate data rate | satellite | basics

IDR stands for Intermediate Data Rate, the technology designed to provide E1 connectivity through satellite network at the rate of 2.048 Mbps and multiples. IDR meets the standard compliance and performance requirement for IDR carriers as per IESS 308/310.

Occupied satellite bandwidth for IDR career is about 0.7 times transmission rate for QPSK modulation and 0.467 times transmission rate for 8-PSK modulation.

IDR equipments are specific and support IDR data rates, which include satellite modem,RF up converter,RF down converter,switch over units and more. It is compliant to all the satellite earth stations working with INSAT based systems.

RF up converter converts IF frequency in the range from 52-88 MHz to RF frequency in C band range(5.925GHz to 6.425GHz) with no frequency inversion. RF down converter converts C band RF frequency to IF frequency. Interface of satellite modem is baseband and RF.

The Modem SWO unit provides N+1 redundancy, Where in N can go to max. 8. The Up/Down Converter SWO unit provides 1+1 redundancy.

The C-DOT IDR Equipment provides user interface which supports elaborate Monitoring, Diagnostics & Administrative functions.

Satellite Modem Related Links

RF Transceiver design and development   Satellite modem design  SCPC  MCPC  Satellite tutorial   VSAT system basics  


Refer following sub topics related to VSAT technology:
Article on VSAT   VSAT NMS protocol  RF Terminology   Satellite Terminology  Access types  RF Transceiver  C band RFT  Microstrip  RF upconverter design   Power Amplifier  what is modulation  Link Budget 

RF and Wireless Terminologies