In this paper, towards the ultra-reliable low-latency requirements of industrial Internet of Things (IIoT), we design a low decoding complexity ordered statistic decoder (OSD) for short analog fountain codes (S-AFCs). We first propose a concatenated decoder named soft-OSD (S-OSD) for S-AFCs, where the S-AFCs are concatenated with LDPC codes. Then, we analyze the log-likelihood ratio (LLR) output of inner decoder via the density evolution (DE), the DE results provide the theoretical guidelines to design the discarding criterion (DC) of test error patterns (TEPs) and stopping criterion (SC) to lower the complexity of S-OSD. Simulation results show that the S-OSD can achieve the same error performance with existing decoding algorithms for S-AFCs, and the complexity of S-OSD is greatly decreased, in terms of the average re-encoding number of OSD and operations number per information bit.


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    Title :

    Low-Complexity Decoder of Analog Fountain Codes for Industrial Internet of Things


    Contributors:
    Zhang, Ke (author) / Wang, Ye (author) / Jiao, Jian (author) / Lu, Rongxing (author) / Zhang, Qinyu (author)


    Publication date :

    2024-06-24


    Size :

    479988 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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