Rateless Codes with Progressive Recovery for Layered Multimedia Delivery

Details Rateless Codes with Progressive Recovery for Layered Multimedia Delivery Rateless Codes with Progressive Recovery for Layered Multimedia Delivery

2012-04-16

arxiv.org/abs/1204.3391v1

Computer Science

Information Theory

Scientific paper

This paper proposes a novel approach, based on unequal error protection, to enhance rateless codes with progressive recovery for layered multimedia delivery. With a parallel encoding structure, the proposed Progressive Rateless codes (Pro-Rateless) assign unequal redundancy to each layer in accordance with their importance. Each output symbol contains information from all layers, and thus the stream layers can be recovered progressively at the expected received ratios of output symbols. Furthermore, the dependency between layers is naturally considered. The performance of the Pro-Rateless is evaluated and compared with some related UEP approaches. Results show that our Pro-Rateless approach provides better performance both theoretically and numerically.

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