Results 141 to 150 of about 564,389 (192)
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An improved interleaver design technique for parallel concatenated convolutional codes
IEEE International Conference on Communications, 2003. ICC '03., 2004This paper is aimed at the problem of designing optimized interleavers for parallel concatenated convolutional codes (PCCC) that satisfy several requirements simultaneously: 1) designing interleavers tailored to the constituent codes of the PCCC; 2) improving the distance spectra of the resulting turbo codes which dominate their asymptotic performance;
Laddomada, Massimiliano, Daneshgaran, F.
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Convolutional self doubly orthogonal codes for iterative decoding without interleaving
Proceedings. 1998 IEEE International Symposium on Information Theory (Cat. No.98CH36252), 2002We present a novel turbo error control technique which circumvents both the complexity and latency shortcomings of the usual turbo codes. It differs from usual turbo coding techniques as if uses single encoder and a single decoder. The technique is based on a novel class of orthogonal threshold decodable codes called convolutional self doubly ...
C. Cardinal +3 more
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Novel Analytical Results on Performance of Bit-Interleaved and Chip-Interleaved DS-CDMA With Convolutional Coding [PDF]
IEEE Transactions on Vehicular Technology, 2005 We present a unified performance analysis for the conventional bit-interleaved direct-sequence (DS) code-division multiple access (BIDS-CDMA) and the more recently proposed chip-interleaved DS-CDMA (CIDS-CDMA), both with channel coding. Simple CIDS-CDMA treats a set of bits at a time and interleaves their chips together for transmission.
Y.-N. Lin, David W. Lin
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Performance of the Viterbi algorithm for interleaved convolutional codes
IEEE Transactions on Vehicular Technology, 1998This paper presents a maximum-likelihood decoder for error-burst channels with a very efficient implementation. In particular, the encoder is formed of an interleaved convolutional code with generator polynomials of the type [g/sup (1)/(D/sup I/), g/sup (2)/(D/sup I/)] (for a rate 1/2 coder), where I may assume a very high integer value.
BENVENUTO, NEVIO +2 more
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Interleaver optimization of convolutional turbo code for 802.16 systems
IEEE Communications Letters, 2009Convolutional turbo code (CTC) has been adopted as an optional channel coding scheme for wireless metropolitan area networks (WMAN) and digital video broadcasting (DVB) owing to its powerful error correction capability and flexibility. In spite of the fact that the internal interleaver of CTC mainly affects the characteristics of the code, interleaving
S.-J. Park, J.-H. Jeon
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Adaptive interleaver based on rate-compatible punctured convolutional codes
IEEE Transactions on Communications, 2009This letter focuses on the design of an adaptive bit-interleaved coded modulation (BICM) scheme for frequency selective slow fading channels where the transmitter has certain knowledge of the channel response. In particular, we consider the design of the interleaver stage for a specific convolutional code operating with OFDM modulation.
Francesc Rey +2 more
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Interleaver design for serially concatenated convolutional codes: theory and application
IEEE Transactions on Information Theory, 2004This paper addresses the problem of interleaver design for serially concatenated convolutional codes (SCCCs) tailored to the constituent codes of the SCCC configuration. We present a theoretical framework for interleaver optimization based on a cost function closely tied to the asymptotic bit-error rate (BER) of the block code C/sub s/ resulting from ...
F. Daneshgaran +2 more
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A Viterbi, convolutional interleave, and Reed-Solomon decoder IC
Proceedings of International Conference on Consumer Electronics, 2005A single IC performs a concatenated forward error correction and conforms to the European digital video broadcast (DVB) specification. The key parameters of the codes are programmable and each function can be individually enabled allowing the IC to be applied to a wide range of applications.
G. Zweigle +3 more
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Interleaving for outer convolutional codes in DS-CDMA systems
IEEE Transactions on Communications, 2000Summary: The paper deals with coding for direct-sequence code-division multiple-access (DS-CDMA) channels. A novel method for interleaver design is introduced that significantly improves the probability of error on Gaussian multiple-access channels.
Brück, Stefan +3 more
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Interleaved convolutional coding for the turbulent atmospheric optical communication channel
IEEE Transactions on Communications, 1988The coding gain of a constraint-length-three, rate one-half convolutional code over a long clear-air atmospheric direct-detection optical communication channel using binary pulse-position modulation signalling is directly measured as a function of interleaving delay for both hard- and soft-decision Viterbi decoding.
F.M. Davidson, Y.T. Koh
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