Kabel Deutschland has successfully performed DVB-C2 transmission tests in its Berlin cable network. The second-generation DVB transmission standard DVB-C2 was published by the European Telecommunications Standards Institute (ETSI) five months ago.
During the Berlin tests DVB-C2 modulated HDTV signals were transmitted on channel D562 together with other analogue and digital services in the Berlin cable network. The highlight of the tests, according to the German cable operator, was the successful transmission of 1024-QAM and 4096-QAM constellations in a fully loaded 862 MHz cable network.Â
The major advantage of DVB-C2 is the excellent spectrum efficiency and itsÂ flexibility and granularity of solutions for all kind of CATV networks,Â said KDGÂs chief technology officer Lorenz Glatz. ÂThe key building blocks of DVB-C2 are the new modulation scheme (COFDM) and the powerful Forward Error Correction system (LDPC). With DVB-C2 we will be able to significantly extend our digital offering, both for broadcasting and eventually for IP based services as well. In optimised networks DVB-C2 will allow to extend the theoretical maximum downstream capacity for 862MHz from 5Gbps today to up to 8Gbps.Â