An Area-Efficient Reconfigurable LDPC Decoder with Conflict Resolution

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著者

    • ZHOU Changsheng
    • The State Key Laboratory of ASIC and System, Department of Microelectronics, Fudan University
    • HUANG Yuebin
    • The State Key Laboratory of ASIC and System, Department of Microelectronics, Fudan University
    • HUANG Shuangqu
    • The State Key Laboratory of ASIC and System, Department of Microelectronics, Fudan University
    • CHEN Yun
    • The State Key Laboratory of ASIC and System, Department of Microelectronics, Fudan University
    • ZENG Xiaoyang
    • The State Key Laboratory of ASIC and System, Department of Microelectronics, Fudan University

抄録

Based on Turbo-Decoding Message-Passing (TDMP) and Normalized Min-Sum (NMS) algorithm, an area efficient LDPC decoder that supports both structured and unstructured LDPC codes is proposed in this paper. We introduce a solution to solve the memory access conflict problem caused by TDMP algorithm. We also arrange the main timing schedule carefully to handle the operations of our solution while avoiding much additional hardware consumption. To reduce the memory bits needed, the extrinsic message storing strategy is also optimized. Besides the extrinsic message recover and the accumulate operation are merged together. To verify our architecture, a LDPC decoder that supports both China Multimedia Mobile Broadcasting (CMMB) and Digital Terrestrial/ Television Multimedia Broadcasting (DTMB) standards is developed using SMIC 0.13µm standard CMOS process. The core area is 4.75mm<sup>2</sup> and the maximum operating clock frequency is 200MHz. The estimated power consumption is 48.4mW at 25MHz for CMMB and 130.9mW at 50MHz for DTMB with 5 iterations and 1.2V supply.

収録刊行物

  • IEICE transactions on electronics

    IEICE transactions on electronics 95(4), 478-486, 2012-04-01

    一般社団法人 電子情報通信学会

参考文献:  17件中 1-17件 を表示

各種コード

  • NII論文ID(NAID)
    10030940588
  • NII書誌ID(NCID)
    AA10826283
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09168524
  • データ提供元
    CJP書誌  J-STAGE 
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