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- W2143291364 abstract "This paper presents a novel unequal erasure protection (UEP) strategy for the transmission of scalable data, formed by interleaving independently decodable and scalable streams, over packet erasure networks. The technique, termed multi-stream UEP (M-UEP), differs from the traditional UEP strategy by: 1) placing separate streams in separate packets to establish independence and 2) using permuted systematic Reed-Solomon codes to enhance the distribution of message symbols amongst the packets. M-UEP improves upon UEP by ensuring that all received source symbols are decoded. The R-D optimal redundancy allocation problem for M-UEP is formulated and its globally optimal solution is shown to have a time complexity of O(2 N N (L + 1) N+1 ), where N is the number of packets and L is the packet length. To address the high complexity of the globally optimal solution, an efficient sub-optimal algorithm is proposed which runs in O(N 2 L 2 ) time. The proposed M-UEP algorithm is applied on SPIHT coded images in conjunction with an appropriate grouping of wavelet coefficients into streams. The experimental results reveal that M-UEP consistently outperforms the traditional UEP reaching peak improvements of 0.6 dB. Moreover, our tests show that M-UEP is more robust than UEP in adverse channel conditions." @default.
- W2143291364 created "2016-06-24" @default.
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- W2143291364 date "2009-06-01" @default.
- W2143291364 modified "2023-09-24" @default.
- W2143291364 title "Unequal Erasure Protection Techniques for Scalable Multi-Streams" @default.
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