Finite-length unequal error protection rateless codes: design and analysis
Finite-length unequal error protection rateless codes: design and analysis
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DOI:
10.1109/glocom.2005.1577872
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发表时间:
2005
期刊:
影响因子:
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通讯作者:
Nazanin Rahnavard;F. Fekri
中科院分区:
文献类型:
--
作者:
Nazanin Rahnavard;F. Fekri
A generalization of rateless codes (LT and Raptor codes) to provide unequal error protection (UEP) property is proposed in this paper. The proposed codes (UEP-LT and UEP-Raptor codes) are analyzed for the best possible performance over the binary erasure channel (BEC) in finite-length cases. We derive upper and lower bounds on the bit error probabilities under the maximum-likelihood (ML) decoding. We further verify our work with simulations. Simulation results indicate that the bounds are tight for small error rates, and the proposed codes have strong UEP property.