China opts for own Digital Terrestrial TV & Mobile TV Standard

China is poised to roll out its own digital terrestrial TV and mobile TV standard, called DMB-T/H, which stands for Digital Multimedia Broadcasting - Terrestrial / Handheld. This name should not be confused with the variant of the DAB system, T-DMB, which a couple of European countries are trialing (i.e. T-DMB and DMB-T are two completely different systems!).

DMB-T/H will use 8 MHz channel bandwidths and receivers will apparently support two different modulation schemes: TDS-OFDM (Time Domain Synchronous OFDM) and ADTB-T - the former uses a variant of OFDM, which is used on the DVB-T system that's used for Freeview, and the latter uses 8-VSB, which is used by the American ATSC digital terrestrial TV standard.

DMB-T/H will allow channel capacities up to 32 Mbps, which means it will support QPSK, 16-QAM and 64-QAM modulation. 

One difference between DMB-T/H and the DVB-T/H systems used in Europe is that DMB-T/H has been designed to support mobile TV from the outset, whereas the DVB-H mobile TV system consisted of a modification/extension to the DVB-T system.
 
 

Add a comment: Name (optional) Email (will not be published) (required) Subject (optional) Write the word radio in this box (HTML markup is allowed)

 
 

Bookmark with:
Digg	del.icio.us	Reddit	Facebook
Google	Stumbleupon	Slashdot