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Goohyun Park, Sukhyon Yoon, Daeki Hong, Daesik Hong and Changeon Kang, "Design for a Turbo-Code Decoder Using a Block-Wise Algorithm", IEICE Trans. Comm., Feb 2002
[IEICE Trans. Commun.]
조회 33367
Status : | Published |
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Date : | 2002-02 |
Title : | Design for a Turbo-Code Decoder Using a Block-Wise Algorithm |
Authors : | Goohyun Park, Sukhyon Yoon, Daeki Hong, Daesik Hong and Changeon Kang |
Journal : | IEICE Transactions on Communications |
Abstract : | Several implementation methods for a MAP decoder are proposed in this paper. Using a novel pipeline structured time-shared process, the authors are able to efficiently overcome the restrictions imposed by the recursion process on state metrics, and the complexity of the MAP decoder can be reduced to a level on the order of a SOVA (Soft Output Viterbi Algorithm) decoder. In addition, the authors propose an efficient controller structure that can be used for variable frame-size systems such as cdma-2000. The MAP decoder using a block-wise algorithm designed here was implemented in only one 20,000 gate circuit. It was validated by VHDL, which was compared with the results of the initial simulation (C programs). The decoder demonstrated a 300 kbps decoding processing ability with 8 iterations on a FPGA circuit, with a deviation only about 0.1-0.2 dB greater than that for an ideal MAP decoder, even when all hardware environments are considered. |
URL : | http://ci.nii.ac.jp/cinii/servlet/CiNiiL...0003651656 |
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