Title :
Novel Multi-Service Datacasting Scheme over DTMB System
Author :
Wang, Xiaoqing ; Tang, Shigang ; Li, Yangang ; Jia, Shuyun
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
To efficiently accommodate the terrestrial broadcasting service and the mobile service within the same spectrum over Chinese Digital Television Terrestrial Multimedia Broadcasting (DTMB) system, a novel multi-service datacasting scheme in a backward compatible manner is proposed in this paper. In this scheme, an equivalent QAM (E-QAM) mapping method is adopted for mobile services. Moreover, to reduce the impact of the larger peak to average power ratio (PAPR)caused by the E-QAM, a random constellation extension (RCE)technique is further proposed. Both theoretical analysis and computer simulation show that this scheme not only supports the normal reception of the traditional terrestrial broadcasting service in DTMB receivers, but also provides better mobile reception performance at acceptable spectral efficiency penalty.
Keywords :
broadcasting; digital television; mobile communication; multimedia communication; quadrature amplitude modulation; Chinese digital television terrestrial multimedia broadcasting system; DTMB system; equivalent QAM mapping method; mobile service; multi-service datacasting scheme; peak to average power ratio; random constellation extension; Broadcasting; Digital TV; Forward error correction; Mobile communication; Peak to average power ratio; Quadrature amplitude modulation; Signal to noise ratio;
Conference_Titel :
Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd
Conference_Location :
Ottawa, ON
Print_ISBN :
978-1-4244-3573-9
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2010.5594373