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Hybrid in band on channel (IBOC) digital audio broadcasting (DAB) simultaneously with analog amplitude modulation (AM) has been proposed as a hybrid solution to digital audio broadcasting in the AM band. Adding digital transmission in the crowded AM band is a challenging proposition. To achieve FM like audio quality, an audio coder rate of 32-64 kbit/s may be required. One of the currently proposed hybrid IBOC-AM systems is 30 kHz wide. Severe second adjacent interference may occur in certain geographical areas. For coping with such harsh transmission conditions, we present a solution based on embedded/multi-descriptive audio coding with matched multistream transmission in separate frequency bands. With loss of one frequency band, the embedded system blends to a lower audio coder rate with still a better quality than analog AM. The non-embedded system without multi-stream transmission fails catastrophically causing a severe discontinuity in quality while blending directly to analog AM
Published in:
Communications, 2001. ICC 2001. IEEE International Conference on
(Volume:6
)
Date of Conference: 2001
- Page(s):
- 1654 - 1659 vol.6
- Meeting Date :
- 11 Jun 2001-14 Jun 2001
- Print ISBN:
- 0-7803-7097-1
- INSPEC Accession Number:
- 7106251
- Conference Location :
- Helsinki
- Digital Object Identifier :
- 10.1109/ICC.2001.937075
- Product Type:
- Conference Publications
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