Title :
An example of a multi-resolution digital terrestrial TV modem
Author :
De Bot, Paul G M ; Baggen, Stan ; Chouly, Antoine ; Brajal, Américo
Author_Institution :
Philips Res. Lab., Eindhoven, Netherlands
Abstract :
An example of a modem for two-resolution digital terrestrial transmission, providing two programs in a single 8 MHz channel is described. For each program, it is desired to transmit 5 Mb/s to portable receivers and additionally 5 Mb/s to fixed receivers. In the example, orthogonal frequency division multiplexing (OFDM) is used with guard intervals as in digital audio broadcasting. The two-resolution transmission is achieved by using a two-resolution quadrature amplitude modulation (QAM) signal constellation. Reed-Solomon coding gives burst error correction capability to combat the frequency selective nature of the transmission channel. The two-resolution system can easily be reconfigured into a compatible system, providing high-definition television to fixed receivers
Keywords :
Reed-Solomon codes; digital television; error correction codes; frequency division multiplexing; high definition television; modems; quadrature amplitude modulation; telecommunication channels; television broadcasting; television transmitters; 10 Mbit/s; OFDM; QAM; Reed-Solomon coding; TV modem; burst error correction; fixed receivers; guard intervals; high-definition television; orthogonal frequency division multiplexing; portable receivers; signal constellation; two-resolution digital terrestrial transmission; two-resolution quadrature amplitude modulation; AWGN; Acoustic scattering; Delay; Fading; Laboratories; Modems; Rayleigh scattering; Signal to noise ratio; TV receivers; Transmitters;
Conference_Titel :
Communications, 1993. ICC '93 Geneva. Technical Program, Conference Record, IEEE International Conference on
Conference_Location :
Geneva
Print_ISBN :
0-7803-0950-2
DOI :
10.1109/ICC.1993.397588
