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Turbo decoder for high-speed application in wideband-code division multiple access system

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4 Author(s)
Ohbuchi, K. ; Fujitsu Labs. Ltd., Yokosuka, Japan ; Yano, T. ; Miyazaki, S. ; Nakamura, T.

Implementation of a turbo decoder for high-speed application in W-CDMA (wideband-code division multiple access) systems and its performance are described As an implementation of the max-log-MAP (maximum a posteriori) algorithm for the turbo decoder, we propose what we call a "stepping-stone-max-log-MAP" (SS-max-log-MAP) algorithm that reduces memory size in the turbo decoder without loss of performance compared to the ordinal max-log-MAP algorithm, even when bit puncturing is used to adjust transmission data rate. Performance evaluation of the SS-max-log-MAP turbo decoder is also described when applied to a high-speed data channel in W-CDMA.

Published in:
Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE  (Volume:4 )

Date of Conference: 1-5 Dec. 2003

Page(s):
2355 - 2359 vol.4
Print ISBN:
0-7803-7974-8
INSPEC Accession Number:
7884579
Digital Object Identifier :
10.1109/GLOCOM.2003.1258656

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