Abstract:
This paper presents the design and hardware implementation of a log-MAP turbo decoder used in the third generation (3G) mobile communication W-CDMA systems. The decoding ...Show MoreMetadata
Abstract:
This paper presents the design and hardware implementation of a log-MAP turbo decoder used in the third generation (3G) mobile communication W-CDMA systems. The decoding algorithm is highly data dominated and needs many memories for data storing. The memory requirements are systematically investigated and optimized from two aspects: (1) an alternative called state metric difference-storing method is proposed to save the forward state metric (/spl alpha/) and the backward state metric (/spl beta/) memory up to 1/3; (2) the interleaver address memory is reduced by repeating the address calculation at each iteration. The experimental results on an FPGA prototype of the decoder show that it supports 2Mbits/s data rate with five iterations, and for code blocks of more than 2000, a bit error rate (BER) of 10/sup -6/-10/sup -7/ is achieved at E/sub b//N/sub o/=1.0 dB after only five iterations.
Published in: IEEE Transactions on Consumer Electronics ( Volume: 48, Issue: 2, May 2002)
Department of Electronic Engineering, Fudan University, Shanghai, China
Xiao-Jun Zeng received his B.S. degree in radio electronics from Sichuan University in 1988, Chengdu, China, his M.S. degree in electronic engineering and graduated with Ph.D in microelectronics from Fudan University, Shanghai, China, in 1991, 2000 respectively. As a Ph.D student he was with the R&D department of SICAN GmbH from 1994 to 1999, Hannover, Germany. Now he is with Shanghai Hualong Information Technology Develo...Show More
Xiao-Jun Zeng received his B.S. degree in radio electronics from Sichuan University in 1988, Chengdu, China, his M.S. degree in electronic engineering and graduated with Ph.D in microelectronics from Fudan University, Shanghai, China, in 1991, 2000 respectively. As a Ph.D student he was with the R&D department of SICAN GmbH from 1994 to 1999, Hannover, Germany. Now he is with Shanghai Hualong Information Technology Develo...View more
Department of Electronic Engineering, Fudan University, Shanghai, China
Zhi-Liang Honc received his B.S. degree from Chinese University of Science & Technology in 1970, his Ph.D degree from ETH Zurich, Switzland, in 1985. He joined Department of Electronic Engineering, Fudan University in 1986. As a Visiting Scholar, he visited the Department of Information Processing of Hannover University, Germany, from 1992 to 1994. He is a professor in Fudan University, and Director of IC design laborator...Show More
Zhi-Liang Honc received his B.S. degree from Chinese University of Science & Technology in 1970, his Ph.D degree from ETH Zurich, Switzland, in 1985. He joined Department of Electronic Engineering, Fudan University in 1986. As a Visiting Scholar, he visited the Department of Information Processing of Hannover University, Germany, from 1992 to 1994. He is a professor in Fudan University, and Director of IC design laborator...View more
Contents Department of Electronic Engineering, Fudan University, Shanghai, China
Xiao-Jun Zeng received his B.S. degree in radio electronics from Sichuan University in 1988, Chengdu, China, his M.S. degree in electronic engineering and graduated with Ph.D in microelectronics from Fudan University, Shanghai, China, in 1991, 2000 respectively. As a Ph.D student he was with the R&D department of SICAN GmbH from 1994 to 1999, Hannover, Germany. Now he is with Shanghai Hualong Information Technology Development Center, where he works on the 3G-CDMA project.
Xiao-Jun Zeng received his B.S. degree in radio electronics from Sichuan University in 1988, Chengdu, China, his M.S. degree in electronic engineering and graduated with Ph.D in microelectronics from Fudan University, Shanghai, China, in 1991, 2000 respectively. As a Ph.D student he was with the R&D department of SICAN GmbH from 1994 to 1999, Hannover, Germany. Now he is with Shanghai Hualong Information Technology Development Center, where he works on the 3G-CDMA project.View more
Department of Electronic Engineering, Fudan University, Shanghai, China
Zhi-Liang Honc received his B.S. degree from Chinese University of Science & Technology in 1970, his Ph.D degree from ETH Zurich, Switzland, in 1985. He joined Department of Electronic Engineering, Fudan University in 1986. As a Visiting Scholar, he visited the Department of Information Processing of Hannover University, Germany, from 1992 to 1994. He is a professor in Fudan University, and Director of IC design laboratory.
Zhi-Liang Honc received his B.S. degree from Chinese University of Science & Technology in 1970, his Ph.D degree from ETH Zurich, Switzland, in 1985. He joined Department of Electronic Engineering, Fudan University in 1986. As a Visiting Scholar, he visited the Department of Information Processing of Hannover University, Germany, from 1992 to 1994. He is a professor in Fudan University, and Director of IC design laboratory.View more
