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5. In conclusion
While the development of digital radio has been made possible by audio bit-rate reduction, error detection/correction codes and their flexibility, the contribution of the COFDM digital modulation system is fundamental to terrestrial broadcasting.
COFDM is particularly well suited to the constraints of a terrestrial propagation channel. It takes into account both natural and artificial echoes created by neighboring transmitters, and can compensate for the negative effects of multipath by modulating a large number of orthogonal carriers and correcting errors. Its performance makes it ideal for high-speed mobile receivers.
Finally, COFDM offers the possibility of setting up networks or SFNs (Single Frequency Networks), thus limiting the number of channels needed to broadcast a given program over a given territory, at a time when frequency bands...
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The Ultimate Scientific and Technical Reference
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In conclusion
Bibliography
- (1) - STOTT (J.H.) - The how and why of COFDM. - EBU Technical Review, Winter (1998) http://www.tech.ebu.ch/docs/techreview/trev_278-stott.pdf
- (2) - BERROU (C.),...
Standards and norms
Digital radio systems
- Radio Broadcasting Systems ; Digital Audio Broadcasting (DAB) to mobile, portable and fixed receivers - ETSI EN 300 401 V1.4.1 - 09-00 -> 06-06
- Digital Radio Mondiale (DRM) ; System Specification - ETSI ES 201 980 V3.2.1 - 04-03 -> 06-12
- Digital Audio Broadcasting (DAB) ; DMB video service ; User Application Specification + DMB-Radio - ETSI TS 102 428...
Directories
• EBU (European Broadcasting Union) http://www.ebu.ch/
• ETSI (European Telecommunications Standards Institute) http://www.etsi.org
• IEC (International Electrotechnical Commission) http://www.iec.ch/
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The Ultimate Scientific and Technical Reference