喷泉码的编译码算法研究
首发时间:2009-12-22
摘要:泉码的无码率特性和低编译码复杂度使得其得到了广泛的关注和应用。本文介绍了LT码和Raptor的编译码算法并分析了3GPP MBMS中的译码算法。在此基础上,我们提出了一种简单有效的译码算法。仿真结果表明,与GPP MBMS译码算法相比,本文提出的译码算法所需的译码时间更少。
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Research of Encoding and Decoding Algorithm of Fountain Codes
Abstract:ountain codes deserve a lot of attention because of its characteristics of rateless and low complexity encoding and decoding algorithm. This paper introduces the encoding and decoding algorithm of LT codes and Raptor codes, and analyses the decoding algorithm in 3GPP MBMS. Then we propose a simplified decoding algorithm according to the analysis. Simulation results show that average decoding time of the proposed decoding algorithm is much less than the decoding algorithm in 3GPP MBMS.
Keywords: fountain code 3GPP BP decoding algorithm Gaussian elimination
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No.3790250725712614****
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