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Optimization of rateless coding for multimedia multicasting

机译:多媒体组播无速率编码的优化

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摘要

Fountain codes are a class of recently proposed efficient erasure error-control codes. However, the original design of fountain codes, despite being highly efficient for erasure channels, has very poor progressive decoding performance. The purpose of this paper is to design and optimize unequal error protection (UEP) fountain codes to maximize the throughput of multimedia communication systems while providing different levels of guaranteed QoS for heterogenous users. A random interleaved rateless code design is proposed to solve the formulated constraint optimization problem. Numerical results demonstrate the advantage of the proposed design with optimal parameters compared to existing UEP designs.
机译:源代码是最近提出的有效擦除错误控制代码的一类。但是,喷泉码的原始设计尽管对擦除信道非常有效,但其渐进解码性能却很差。本文的目的是设计和优化不等错误保护(UEP)源代码,以最大程度地提高多媒体通信系统的吞吐量,同时为异构用户提供不同级别的QoS保证。为了解决所提出的约束优化问题,提出了一种随机交错无速率编码设计。数值结果证明了与现有UEP设计相比,具有最佳参数的拟议设计的优势。

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