TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

A 122Mb/s Turbo decoder using a mid-range GPU

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
Otsikko2013 9th International Wireless Communications and Mobile Computing Conference (IWCMC), 1-5 July 2013, Sardinia
KustantajaInstitute of Electrical and Electronics Engineers IEEE
Sivut1090 - 1094
Sivumäärä5
ISBN (elektroninen)978-1-4673-2480-9
ISBN (painettu)978-1-4673-2479-3
DOI - pysyväislinkit
TilaJulkaistu - 2013
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa

Julkaisusarja

NimiInternational Wireless Communications and Mobile Computing Conference

Tiivistelmä

Parallel implementations of Turbo decoding has been studied extensively. Traditionally, the number of parallel sub-decoders is limited to maintain acceptable code block error rate performance loss caused by the edge effect of code block division. In addition, the sub-decoders require synchronization to exchange information in the iterative process. In this paper, we propose loosening the synchronization between the sub-decoders to achieve higher utilization of parallel processor resources. Our method allows high degree of parallel processor utilization in decoding of a single code block providing a scalable software-based implementation. The proposed implementation is demonstrated using a graphics processing unit. We achieve 122.8Mbps decoding throughput using a medium range GPU, the Nvidia GTX480. This is, to the best of our knowledge, the fastest Turbo decoding throughput achieved with a GPU-based implementation.

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