Title :
An independent sharing of two 16-star QAM broadcast channels
Author :
Celidonio, M. ; Di Zenobio, Dario
Author_Institution :
Fondazione Ugo Bordoni, Rome, Italy
Abstract :
This paper describes an example of a system, providing two-resolution equivalent digital terrestrial broadcasting, based on UHF channel frequency arrangements. In this article orthogonal frequency division multiplexing technique combined with guard-interval is used. The transmission is achieved by using 16 QAM modulation with star constellation (16 star QAM) to reduce linearization problems of the power amplifier in the transmitter, The proposed system provides 5.5 Mbit/s to portable receivers and, additionally, 5.5 Mbit/s to fixed receivers. Block codes (BCH) give burst error correction capabilities to combat the frequency selective nature of the transmission channel
Keywords :
BCH codes; block codes; channel capacity; digital television; error correction codes; frequency division multiplexing; quadrature amplitude modulation; telecommunication channels; television broadcasting; television receivers; video coding; video equipment; 16-star QAM broadcast channels; BCH codes; UHF channel frequency arrangements; block codes; burst error correction; fixed receivers; guard-interval; independent sharing; linearization problems; orthogonal frequency division multiplexing technique; portable receiver; power amplifier; star constellation; transmission channel; transmitter; two-resolution equivalent digital terrestrial broadcasting; Bandwidth; Bit rate; Digital TV; Error correction codes; Frequency; HDTV; OFDM modulation; Quadrature amplitude modulation; TV broadcasting; TV receivers;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1995. PIMRC'95. Wireless: Merging onto the Information Superhighway., Sixth IEEE International Symposium on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-3002-1
DOI :
10.1109/PIMRC.1995.476415
