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Author: search.filters.author.Khittiwitchayakul, SirawitSubject: search.filters.subject.LDPC code

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    Item type:Publication,
    Development of 5G LDPC Experimental Kit
    (2022-01-01)
    Srisupha, Thanat
    ;
    Mueadkhunthod, Krittiyaporn
    ;
    Phakphisut, Watid
    ;
    Khittiwitchayakul, Sirawit
    ;
    Puntsri, Kidsanapong
    In this work, we develop the 5G LDPC experimental kit to demonstrate the encoding processes of LDPC codes in 5G new radio. The experimental kit consists of a graphical user interface (GUI) and an FPGA development board. Any parameters defined in the 5G new radio can be configured and their encoding results are presented in the GUI. We also develop the 5G LDPC encoder as the software module integrated within the GUI. The user can select the software or hardware for the 5G LDPC encoder. The experimental kit is simple to use and no need any complicated setups. We believe that the experimental kit would be useful to anyone interested in the LDPC 5G NR standard.
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    Item type:Publication,
    Associated sectors of magnetic recording system via spatially coupled LDPC codes
    (2021-05-19)
    Khittiwitchayakul, Sirawit
    ;
    Supnithi, Pornchai
    ;
    Phakphisut, Watid
    Spatially coupled low-density parity-check (SC- LDPC) codes have emerged as promising advanced error- correcting codes (ECC) for future high-density magnetic recording (MR) systems, which require excellent error-correcting performance and acceptable practical complexity. In the traditional MR systems, the non-associated sectors are generally used, whereby two consecutive sectors are independently decoded by ECC. In this work, we propose the associated sectors of MR systems in which the information stored in the previous sectors can be requested by ECC to reinforce the decoding of the current sector. Moreover, the proposed associated sectors can mitigate the rate-loss problem of SC-LDPC codes in the MR systems. We demonstrate the bit-error-rates (BERs) of SC-LDPC codes in the bit-patterned media magnetic recording (BPMR) systems with non-associated sectors and associated sectors. The simulation results show that the associated sectors help achieve significant performance gains compared to the non-associated sectors.