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An example of a multi-resolution digital terrestrial TV modem

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4 Author(s)
de Bot, P.G.M. ; Philips Res. Lab., Eindhoven, Netherlands ; Baggen, S. ; Chouly, A. ; Brajal, A.

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

Published in:

Communications, 1993. ICC '93 Geneva. Technical Program, Conference Record, IEEE International Conference on  (Volume:3 )

Date of Conference:

23-26 May 1993

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