A full layer parallel QC-LDPC decoder for WiMAX and Wi-Fi

Wenchao Zhang, Song Chen, Xuefei Bai, Dajiang Zhou

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    4 Citations (Scopus)

    Abstract

    This paper presents a full layer parallel quasi-cyclic low density parity check (QC-LDPC) code decoder for IEEE 802.16e (WiMAX) and IEEE 802.11n (Wi-Fi). By adopting three techniques including reusable fully parallel check node unit (CNU) structure, path rerouting network (PRN) and reusable permutation network (PN), the proposed decoder gets Gbps level throughput and could support two standards and most code modes of them with low hardware cost. By using turbo-decoding message-passing normalized min-sum (TDMP-NMS) decoding strategy, the bit error rate (BER) of the proposed decoder is decreasing fast to 10-5 at 2.2 dB. It only takes 30∼40/30∼60 clock cycles in each decoding iteration for WiMAX/Wi-Fi. Using SMIC 40nm low leakage HS RVT CMOS process and 7-bit quantization, the proposed decoder attains 789∼2227/470∼1879 Mbps for WiMAX/Wi-Fi at 290 MHz, 10 iterations, and only occupies 2.26 mm2 area.

    Original languageEnglish
    Title of host publicationProceedings - 2015 IEEE 11th International Conference on ASIC, ASICON 2015
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781479984831
    DOIs
    Publication statusPublished - 2016 Jul 19
    Event11th IEEE International Conference on Advanced Semiconductor Integrated Circuits (ASIC), ASICON 2015 - Chengdu, China
    Duration: 2015 Nov 32015 Nov 6

    Other

    Other11th IEEE International Conference on Advanced Semiconductor Integrated Circuits (ASIC), ASICON 2015
    CountryChina
    CityChengdu
    Period15/11/315/11/6

    ASJC Scopus subject areas

    • Hardware and Architecture
    • Electrical and Electronic Engineering

    Fingerprint Dive into the research topics of 'A full layer parallel QC-LDPC decoder for WiMAX and Wi-Fi'. Together they form a unique fingerprint.

    Cite this