| Paper: | SPCOM-P4.4 | ||
| Session: | Iterative Decoding Algorithms and Architectures | ||
| Time: | Wednesday, May 19, 09:30 - 11:30 | ||
| Presentation: | Poster | ||
| Topic: | Signal Processing for Communications: Compression, Coding, and Modulation | ||
| Title: | ITERATIVE SOURCE CODED MODULATION: TURBO ERROR CONCEALMENT BY ITERATIVE DEMODULATION | ||
| Authors: | Thorsten Clevorn; Aachen University (RWTH) | ||
| Peter Vary; Aachen University (RWTH) | |||
| Marc Adrat; Aachen University (RWTH) | |||
| Abstract: | In this paper we propose to combine the exploitation of residual source redundancy and iterative demodulation of multi-level modulations in a Turbo-like process to improve error concealment for the source codec parameters. The developed system, denoted as iterative source coded modulation (ISCM), uses the band-width efficiently since no channel code increases the transmitted bit rate. Thus, ISCM is suitable for communication systems without channel coding, but it can be enhanced by a channel code to resemble a Multiple Turbo Code. Furthermore, without a complex channel decoder ISCM requires relatively low computational complexity. Nonetheless, simulations demonstrate considerable performance gains by ISCM with few iterations and small interleaver sizes. Additionally, measures are derived to ensure a correct relation between the unequal error protection in multi-level modulation and the different significance of bits of source codec parameters. | ||
| Back | |||
Home -||-
Organizing Committee -||-
Technical Committee -||-
Technical Program -||-
Plenaries
Paper Submission -||-
Special Sessions -||-
ITT -||-
Paper Review -||-
Exhibits -||-
Tutorials
Information -||-
Registration -||-
Travel Insurance -||-
Housing -||-
Workshops