A novel approach to provide unequal error protection (UEP) using rateless codes over erasure channels, named Expanding Window Fountain (EWF) codes, is developed and discussed. EWF codes use a windowing technique rather than a weighted (non-uniform) selection of input symbols to achieve UEP property. The windowing approach introduces additional parameters in the UEP rateless code design, making it more general and flexible than the weighted approach. Furthermore, the windowing approach provides better performance of UEP scheme, which is confirmed both theoretically and experimentally.
|Translated title of the contribution||Expanding window fountain codes for unequal error protection|
|Pages (from-to)||2510 - 2516|
|Number of pages||7|
|Journal||IEEE Transactions on Communications|
|Publication status||Published - Sep 2009|
Bibliographical noteSponsorship: D. Sejdinovic and R.J. Piechocki would like to thank Toshiba Telecommunications Research Laboratory and its directors for supporting this work.
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- asymptotic analysis
- iterative decoding
- maximum-likelihood decoding
- rateless codes
- unequal error protection