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[Author] Xueqin JIANG(1hit)

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  • Multiple-Rate Quasi-Cyclic LDPC Codes Based on Euclidean Geometries

    Xueqin JIANG  Moon Ho LEE  Tae Chol SHIN  

     
    LETTER-Fundamental Theories for Communications

      Vol:
    E93-B No:4
      Page(s):
    997-1000

    This letter presents an approach to the construction of multiple-rate quasi-cyclic (QC) low-density parity-check (LDPC) codes based on hyperplanes (µ-flats) of two different dimensions in Euclidean geometries. The codes constructed with this method have the same code length, multiple-rate and large stopping sets while maintaining the same basic hardware architecture. The code performance is investigated in terms of the bit error rate (BER) and compared with those of the LDPC codes which are proposed in IEEE 802.16e standard. Simulation results show that our codes perform very well and have low error floors over the AWGN channel.