Investigation of Satellite IMUX and OMUX Non-idealities Effects by Modeling the Group Delay

Efficient transmission of satellite DVB-S2 based services is greatly dependent on the group delay of the multiplexer and demultiplexer filters of the satellite transponder. In this paper, the effect of the group delay on the performance of the DVB-S2 based services is studied. In other words, the BER of the satellite DVB-S2 based service versus various parabolic group delays is investigated. The effect of the satellite group delay is modeled through the digital all-pass filters. The simulation results show that by knowing the maximum allowable BER, the maximum acceptable group delay of a satellite channel is determined.

Keywords:

Group delay , DVB-S2 , satellite