Extraction of teletext channel information from measured complex and in-phase impulse responses at baseband and their significance

• Published in: IEEE transactions on communications Vol. 37; no. 2; pp. 110 - 118
• Main Authors: Sablatash, M., Moreland, K.W.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.02.1989; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Baseband; Broadcasting; Computer simulation; Costs; Data mining; Equations; Exact sciences and technology; Fourier transforms; Frequency; Services and terminals of telecommunications; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Telematics; Teletext; Computer simulation; Pulse response; Example; Videotex; Base band; Teletext; Broadcast videotex
• ISSN: 0090-6778; 1558-0857
• DOI: 10.1109/26.20078

The technical advantages of measuring complex impulse responses rather than the in-phase component of broadcast teletext channels and the extraction of channel information from real impulse response measurements and its limitations are described. A number of illustrative examples are provided. It is concluded, after discussion, that measurements of channel complex impulse responses are necessary, in spite of extra cost, so that suitably flexible and general computer simulation design and performance studies of broadcast teletext systems can be made.< >