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

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3 Author(s)
J. H. Han ; University of Edinburgh, School of Engineering and Electronics, Edinburgh, EH9 3JL, Scotland, United Kingdom. j.han@ed.ac.uk ; A. T. Erdogan ; T. Arslan

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

Published in:

Proceedings 2005 IEEE International SOC Conference

Date of Conference:

19-23 Sept. 2005