A Power Efficient Reconfigurable Max-Log-MAP Turbo Decoder for Wireless Communication Systems

Author

Han, J.H. ; Erdogan, Alper T. ; Arslan, T.

Author_Institution

Sch. of Eng. & Electron., Edinburgh Univ.

fYear

2005

fDate

19-23 Sept. 2005

Firstpage

247

Lastpage

250

Abstract

The authors presented a reconfigurable soft-input soft-output (SISO) turbo decoder based on Max-Log maximum a posteriori (ML-MAP) algorithm implemented with a sliding window (SW) method. The turbo decoder is designed to support constraint lengths from 3 to 5 and synthesized to a 0.18 mum standard CMOS cell library. Power and area overheads for the reconfiguration are analyzed and compared with non-reconfigurable ASIC based turbo decoder for each constraint length. The simulation results demonstrated that the reconfigurable architecture can be applied flexibly to various wireless communication systems without large power and area overheads

Keywords

CMOS digital integrated circuits; codecs; maximum likelihood estimation; radio equipment; reconfigurable architectures; turbo codes; 0.18 micron; CMOS cell library; Max-Log-MAP algorithm; reconfigurable turbo decoder; sliding window method; soft-input soft-output; wireless communication systems; Application specific integrated circuits; Bit error rate; Concurrent computing; Convolutional codes; Decoding; Equations; Reconfigurable architectures; Signal processing algorithms; Turbo codes; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

SOC Conference, 2005. Proceedings. IEEE International

Conference_Location

Herndon, VA

Print_ISBN

0-7803-9264-7

Type

conf

DOI

10.1109/SOCC.2005.1554504

Filename

1554504