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
VSAT RELATED LINKS
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