High speed Turbo decoder design based on stochastic computation

Author

Jianhao Hu ; Yanping Deng ; Jienan Chen ; Xiang Ling

Author_Institution

Nat. Key Lab. of Sci. & Technol. on Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

1

fYear

2013

fDate

15-17 Nov. 2013

Firstpage

235

Lastpage

239

Abstract

It is very important for the future wireless or mobile communication systems to achieve high speed Turbo decoder. A novel Turbo decoder structure and implementation scheme are proposed in this paper. The MAX-log-MAP algorithm is implemented in probability domain with stochastic computation method in this paper. The signed stochastic calculations are adopted to meet the requirements of log-MAP decoder. The proposed decoder scheme is high speed, simple structure and memory free. According to the simulation results, the proposed scheme has 0.5dB performance loss compared with the floating point method.

Keywords

maximum likelihood decoding; mobile communication; stochastic processes; turbo codes; MAX log MAP algorithm; high speed turbo decoder design; log MAP decoder; mobile communication systems; probability domain; stochastic computation method; wireless communication systems; Algorithm design and analysis; Convergence; Decoding; Iterative decoding; Measurement; Stochastic processes; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems (ICCCAS), 2013 International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4799-3050-0

Type

conf

DOI

10.1109/ICCCAS.2013.6765224

Filename

6765224