VLSI architectures for turbo codes
- 1 September 1999
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Very Large Scale Integration (VLSI) Systems
- Vol. 7 (3) , 369-379
- https://doi.org/10.1109/92.784098
Abstract
A great interest has been gained in recent years by a new error-correcting code technique, known as "turbo coding", which has been proven to offer performance closer to the Shannon's limit than traditional concatenated codes. In this paper, several very large scale integration (VLSI) architectures suitable for turbo decoder implementation are proposed and compared in terms of complexity and performance; the impact on the VLSI complexity of system parameters like the state number, number of iterations, and code rate are evaluated for the different solutions. The results of this architectural study have then been exploited for the design of a specific decoder, implementing a serial concatenation scheme with 2/3 and 3/4 codes; the designed circuit occupies 35 mm/sup 2/, supports a 2 Mb/s data rate, and for a bit error probability of 10/sup -6/, yields a coding gain larger than 7 dB, with ten iterations.Keywords
This publication has 17 references indexed in Scilit:
- ECWT: An Overview of Turbo Codes and Their ApplicationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2006
- Near Shannon limit error-correcting coding and decoding: Turbo-codes. 1Published by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Hybrid concatenated codes and iterative decodingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- A comparison of optimal and sub-optimal MAP decoding algorithms operating in the log domainPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- An intuitive justification and a simplified implementation of the MAP decoder for convolutional codesIEEE Journal on Selected Areas in Communications, 1998
- A Prototype VLSI Solution for Digital Terrestrial TV Receivers Conforming to the DVB-T StandardSMPTE Journal, 1997
- Unveiling turbo codes: some results on parallel concatenated coding schemesIEEE Transactions on Information Theory, 1996
- A distance spectrum interpretation of turbo codesIEEE Transactions on Information Theory, 1996
- An alternative to metric rescaling in Viterbi decodersIEEE Transactions on Communications, 1989
- Optimal decoding of linear codes for minimizing symbol error rate (Corresp.)IEEE Transactions on Information Theory, 1974