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 contribution

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
CountryUnited States
CitySan Jose, CA
Period13/09/0916/09/09

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