Publications – Details
EXIT-Optimized Quantizer Design for Iterative Source-Channel Decoding
- Authors:
- Marc Adrat, Markus Antweiler, Thorsten Clevorn, Bjoern Korall, and Peter Vary
- Book Title:
- Proceedings of International Symposium on Turbo Codes & Related Topics
- Venue:
- Munich, Germany
- Date:
- Apr. 2006
- Language:
- English
Abstract
In digital mobile communications the input speech, audio, or video signal has to be quantized before transmission. In this paper, we propose a novel quantizer design strategy which is optimized for the case that iterative sourcechannel decoding (ISCD) is applied at the receiver site. The combination of the new quantizer with the ISCD
scheme reveals a substantially increased error robustness in bad channel conditions at the cost of a tolerable loss of baseline performance in almost error-free situations. This trade-off can smoothly be adjusted.
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