18-10-2012, 05:47 PM
digital television terrestrial multimedia broadcasting
ABSTRACT
The digital television terrestrial multimedia broadcasting standard was ratified on August 18, 2006, and is the mandatory digital television terrestrial broadcasting standard in China. DTMB defines the signal frame structure, the coding and modulation schemes, and adopts time domain synchronous orthogonal frequency-division multiplexing technology using pseudo random sequence as both the guard interval of the OFDM block and the training symbol. It can deliver fast system synchronization, accurate channel estimation, high spectrum efficiency, and excellent single-frequency network performance. This article covers the major features of the DTMB standard, its industrialization, current deployment status and various applications based on the DTMB standard. The transition to digital television is a process that follows different spaces around the world. Although digital satellite television is now commonplace, the switch to digital cable and terrestrial television has taken longer.
ABSTRACT
The digital television terrestrial multimedia broadcasting standard was ratified on August 18, 2006, and is the mandatory digital television terrestrial broadcasting standard in China. DTMB defines the signal frame structure, the coding and modulation schemes, and adopts time domain synchronous orthogonal frequency-division multiplexing technology using pseudo random sequence as both the guard interval of the OFDM block and the training symbol. It can deliver fast system synchronization, accurate channel estimation, high spectrum efficiency, and excellent single-frequency network performance. This article covers the major features of the DTMB standard, its industrialization, current deployment status and various applications based on the DTMB standard. The transition to digital television is a process that follows different spaces around the world. Although digital satellite television is now commonplace, the switch to digital cable and terrestrial television has taken longer.