DVB-S2 DVB-RCS2 . TECHNOLOGY FOR REMOVING INTERFERENCE AND NON-LINEARITU FOR SIGNLE SATELLITE CHANNEL TRANSMISSION BASED ON DVB-S2 AND DVB-RCS2

摘要

The present invention relates to a non-linear compensation technology using single satellite channel transmission based on digital video broadcasting-satellite second generation (DVB-S2) and digital video broadcasting-return channel via satellite second generation (DVB-RCS2), which uses a single satellite channel in order to efficiently use a limited frequency resource, and an interference removing method and an interference removing device thereof. According to one embodiment of the present invention, an interference removing method performed by an interference removing device comprises: a step of generating a DVB-S2 reference communication signal with respect to DVB-S2 and DBV-RCS2 communication signals passing through a single satellite channel; a non-linear training step of performing non-linear training to synchronize the DVB-S2 communication signal passing through the single satellite channel; a non-linear compensation step of using the synchronized DBV-S2 communication signal to calculate a non-linear coefficient and using the calculated non-linear coefficient to remove a non-linear effect generated in the DBV-S2 and DVB-RCS2 communication signals passing through the single satellite channel so as to perform non-linear compensation; a DBV-S2 channel estimation step of estimating a DBV-S2 channel in order to synchronize the DBV-S2 and DVB-RCS2 communication signals from which the non-linear effect is removed; and a step of using the DBV-S2 reference communication signal to output the DBV-RCS2 communication signal, from which the DBV-S2 communication signal causing interference is removed, from the DBV-S2 channel-estimated DBV-S2 and DVB-RCS2 communication signals.