Channel decoding using adaptive interframe and intraframe bit prediction in GSM system

C. Veaux, P. Scalart, A. Gilloire

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

The goal of source controlled channel decoding is to improve the performance of the channel decoder by using the residual redundancy of the speech encoded data. The original approach exploits only the interframe correlation between bits and few simple schemes have been devised in order to use the intraframe correlation. In this contribution, we present an efficient method to exploit the intraframe correlation during the channel decoding process. We predict the soft value of the bit being decoded from the bits already decoded along the trellis path. Our estimator of bit correlation is adaptively estimated from the soft bits values at the decoder output. Finally, the combination of interframe and intraframe prediction is applied to the full-rate and enhanced full-rate speech codecs in the GSM system
Original languageEnglish
Title of host publicationAcoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages2589-2592
Number of pages4
Volume5
ISBN (Print)0-7803-6293-4
DOIs
Publication statusPublished - Jun 2000
Event2000 IEEE International Conference! on Acoustics, Speech, and Signal Processing - Hilton Hotel and Convention Center, Istanbul, Turkey
Duration: 5 Jun 20009 Jun 2000

Conference

Conference2000 IEEE International Conference! on Acoustics, Speech, and Signal Processing
Country/TerritoryTurkey
CityIstanbul
Period5/06/009/06/00

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