Design and implementation of GPU-based turbo decoder with a minimal latency

Author

Heungseop Ahn ; Yong Jin ; Sangwook Han ; Seungwon Choi ; Sungsoo Ahn

Author_Institution

Dept. of Electron. & Comput. Eng., Hanyang Univ., Seoul, South Korea

fYear

2014

fDate

22-25 June 2014

Firstpage

1

Lastpage

2

Abstract

Decoding latency of the turbo decoder has been a serious problem in real-time processing of communication systems. This paper presents a novel procedure of reducing the latency of the turbo decoder which has been implemented with GPU (Graphic Processing Unit). The main contribution of this paper is to present an efficient procedure of reducing the latency of GPU-based turbo decoder through an efficient parallel processing of maximum a posteriori (MAP). Through experimental tests, we have verified that the proposed turbo decoder reduces the latency from 34,767μs to 273μs per iteration.

Keywords

codecs; decoding; graphics processing units; maximum likelihood estimation; turbo codes; GPU; MAP; communication systems real-time processing; decoding latency; graphic processing unit; maximum a posteriori; turbo decoder; Bit error rate; Communication systems; Decoding; Educational institutions; Graphics processing units; Iterative decoding; Parallel processing; CUDA; GPU; Turbo decoder; parallel MAP decoder;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics (ISCE 2014), The 18th IEEE International Symposium on

Conference_Location

JeJu Island

Type

conf

DOI

10.1109/ISCE.2014.6884510

Filename

6884510