A 0.92mm2 23.4mW fully-compliant CTC decoder for WiMAX 802.16e application

Shao Wei Yen*, Ming Chih Hu, Chih Lung Chen, Hsie-Chia Chang, Shyh-Jye Jou, Chen-Yi Lee

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    An area-efficient and fully-compliant decoder for convolutional turbo code (CTC) of WiMAX 802.16e is presented. The proposed decoder can support all 17 modes specified in IEEE 802.16e system. By scaling the extrinsic information, the Max-Log MAP algorithm is used to reduce the hardware complexity with the minimized performance loss. A two-phase extrinsic memory and reversed sliding window technique are demonstrated for less memory requirement and decoding latency. Moreover, a division-free reconfigurable interleaver architecture is implemented by simple addition and subtraction instead of division. Fabricated with the 90nm CMOS process, the proposed CTC decoder chip which occupies core area of 0.92mm2 can achieve 30Mb/s with 23.4mW power consumption.

    Original languageEnglish
    Title of host publication2009 IEEE Custom Integrated Circuits Conference, CICC '09
    PublisherIEEE
    Pages191-194
    Number of pages4
    ISBN (Print)9781424440726
    DOIs
    StatePublished - 1 Dec 2009
    Event2009 IEEE Custom Integrated Circuits Conference, CICC '09 - San Jose, CA, United States
    Duration: 13 Sep 200916 Sep 2009

    Publication series

    NameProceedings of the Custom Integrated Circuits Conference
    ISSN (Print)0886-5930

    Conference

    Conference2009 IEEE Custom Integrated Circuits Conference, CICC '09
    Country/TerritoryUnited States
    CitySan Jose, CA
    Period13/09/0916/09/09

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