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Apply bit-level interleaver to improve the error rate performance of the double binary turbo code with less decoder complexity

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2 Author(s)
Yan-Xiu Zheng ; Ind. Technol. Res. Inst., Hsinchu ; Yu-Chuan Fang

An innovative interleaver design concept is proposed to enhance double binary turbo code which is adopted in IEEE 802.16e and DVB-RCS/RCT. Our concept features bit-level interleaving instead of conventional symbol-level interleaving. In order to prove this concept, we construct a bit-level interblock permutation interleaver. Comparing with IEEE 802.16e CTC, new design outperforms IEEE 802.16e CTC by 0.02-0.3 dB at frame error rate=10-4 while the associated decoder saves 33% storage extrinsic information. Our concept improves error rate performance and reduces double binary turbo decoder complexity at the same time.

Published in:

Turbo Codes and Related Topics, 2008 5th International Symposium on

Date of Conference:

1-5 Sept. 2008

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