Asymptotic analysis and optimization design of physical layer systematic rateless codes

Asymptotic analysis and optimization design of physical layer systematic rateless codes
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物理层系统无速率码的渐近分析与优化设计

DOI:
10.1109/ccnc.2018.8319232
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发表时间:
2018
期刊:
2018 15th IEEE Annual Consumer Communications & Networking Conference (CCNC)
影响因子:
--
通讯作者:
Lei Cao
Lei Cao
中科院分区:
--
文献类型:
--
作者:
Amrit Kharel;Lei Cao

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本文首先利用离散密度演化(DDE)方法对系统化的吕比变换(LT)和Raptor码在二进制输入加性白色高斯噪声(BIAWGN)信道下的性能进行了渐近分析。然后,我们使用基于DDE的优化方法来获得优化的输出度分布的各种实现码率的系统猛禽(SR)码。最后给出了译码门限和仿真结果,结果表明,在BIAWGN信道下,优化后的SR码的性能大大优于传统的SR码。
In this paper, we first provide the asymptotic analysis of systematic version of Luby transform (LT) and Raptor codes over binary input additive white Gaussian noise (BIAWGN) channel using discretized density evolution (DDE). We then use a DDE-based optimization approach to obtain optimized output degree distributions for the systematic Raptor (SR) codes of various realized code-rates. We finally provide the decoding thresholds and simulation results showing that our optimized SR codes largely outperform the traditional SR codes in BIAWGN channel.
DOI: 10.1109/18.910577
发表时间: 2001-02-01
影响因子: 2.5
作者:
Richardson, TJ;Urbanke, RL
通讯作者: Urbanke, RL