Nippon TV completes DVB-S2X satellite trial
DetailsRebecca Hawkes | 03 March 2015
Japan's Nippon TV has completed what is claimed to be the first DVB-S2X 2556APSK satellite transmission, ahead of rolling out its next-generation video network.
The trial, undertaken in November 2014, saw the broadcaster transmit 5MHz bandwidth with a 256APSK carrier from a satellite news gathering (SNG) truck to JCSAT's Superbird-B2 satellite using technology from satellite communications systems designer Newtec.
"Knowing that DVB-S2X can reduce satellite bandwidth with its 5% roll off technology, we wanted to test DVB-S2X 256APSK modulation on an actual satellite because it requires higher quality and link margin, which could have been a challenge for us. Following the trial, I am confident of the Superbird-B2 satellite's ability to accommodate this modulation," said Tetsuo Makino, director of Engineering Technical Strategy Group, Nippon TV.
The team used Netwtec's MDM6100 broadcast satellite modem and 5MHz bandwidth on a SKY Perfect JSAT transponder to transmit the content at speeds of 25Mbps using a 1.4m antenna from the SNG truck to Nippon TV's headquarters in Minato, Tokyo.
"The new DVB extension, called DVB-S2X, with improved efficiency, will enable the satellite industry to increase profitability and allow for business growth throughout all applications, from high speed IP to broadcast," said Dirk Breynaert, CTO, co-founder, Newtec.
DVB-S2X boosts the satellite link up to 20% in direct-to-home (DTH) networks and up to 51% in other professional applications compared to DVB-S2, claims Newtec.