Simplified MAP algorithm suitable for implementation of turbo decoders - Electronics Letters
نویسندگان
چکیده
BARKER, R.H.: ‘Group synchronizing of binary digital systems’ in JACKSON, w. (Ed.): ‘Communication theory’ (Butterworths, London, 1953), pp.273-287 GOLOMB, s.w., and SCHOLTZ, R.A.: ‘Generalized Barker sequences’, ZEEE Trans. In$ Theory, 1965, IT-11, (4), pp. 533-537 ZHANG, N., and GOLOMB, s.w.: ‘Sixty-phase generalized Barker sequences’, ZEEE Trans. ZnJ: Theory, 1989, IT-35, (4), pp. 91 1-912 BOMER, L., and ANTWEILER, M.: ‘Polyphase Barker sequences’, Electron. Lett., 1989, 25, (23), pp. 1577-1579 FRIESE, M., and ZOTTMANN, H.: ‘Polyphase Barker sequences up to length 31’, Electron. Lett., 1994, 30, (23), pp. 1930-1931 CHANG, N., and GOLOMB, s.w.: ‘7200-phase generalized Barker sequences’, ZEEE Trans. Znf: Theory, 1996, IT-42, (4), pp. 12361238 FRIESE, M.: ‘Polyphase Barker sequences up to length 36’, ZEEE Trans. Znf: Theory, 1996, IT-42, (4), pp. 1248-1250 SOMAINI, U,, and ACKROYD, M.H.: ‘Uniform complex codes with low autocorrelation sidelobes’, ZEEE Trans. In$ Theory, 1974, IT-20, pp. 689-691
منابع مشابه
Simplified MAP Algorithm Suitable for Implementation of Turbo Decoders
A simplification of the MAP decoder for use in turbo decoders is presented. The simplification eliminates the need for a ROM or multiplexor-tree lookup table and replaces it with a constant value. Simulations show that the performance of turbo decoders is not adversely affected by this simplification.
متن کاملOn a turbo decoder design for low power dissipation
(Abstract) A new coding scheme called "turbo coding" has generated tremendous interest in channel coding of digital communication systems due to its high error correcting capability. Two key innovations in turbo coding are parallel concatenated encoding and iterative decoding. A soft-in soft-out component decoder can be implemented using the maximum a posteriori (MAP) or the maximum likelihood ...
متن کاملNovel Non-Recursive max Operator with Reduced Implementation Complexity for Turbo Decoding
In this paper, we deal with the problem of how to effectively approximate the max operator when having n > 2 input values, with the aim of reducing implementation complexity of conventional Log-MAP turbo decoders. We show that, contrary to previous approaches, it is not necessary to apply the max operator recursively over pairs of values. Instead, a simple, yet effective, solution for the max o...
متن کاملDesign and Implementation of Turbo Decoder for Advanced T-DMB System
Iterative decoders such as turbo decoders have become integral components of modern broadband communication systems such as Advanced Terrestrial DMB (AT-DMB) system because of their ability to provide substantial coding gains. This paper presents a design and FPGA implementation of turbo decoder for AT-DMB system which enables high quality mobile multimedia broadcasting services that exceeds cu...
متن کاملNon-recursive max* operator with reduced implementation complexity for turbo decoding
In this paper, we deal with the problem of how to effectively approximate the max operator when having n > 2 input values, with the aim of reducing implementation complexity of conventional Log-MAP turbo decoders. We show that, contrary to previous approaches, it is not necessary to apply the max operator recursively over pairs of values. Instead, a simple, yet effective, solution for the max o...
متن کامل