What does DVB-SH stand for?

Standing for Digital Video Broadcasting - Satellite services to Handhelds and published in Feb 2007 by the DVB Project, DVB-SH is a physical layer standard for delivering IP based media content and data to handheld terminals such as mobile phones or PDAs, based on a hybrid satellite/terrestrial downlink and for example a GPRS uplink.

DVB-SH was designed for frequencies below 3 GHz and supports UHF band, L Band or S-band. It complements and improves the existing DVB-H physical layer standard. Like its sister specification (DVB-H), it is based on DVB IP Datacast (IPDC) delivery, electronic service guides and service purchase and protection standards.

Two operational modes are contained in DVB-SH:

 SH-A: specifies the use of COFDM modulation on both satellite and terrestrial links with the possibility of running both links in SFN mode.

SH-B: uses Time-Division Multiplexing (TDM) on the satellite link and COFDM on the terrestrial link.