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Braided Block Codes

IEEE Transactions on Information Theory, 2009
A new class of binary iteratively decodable codes with good decoding performance is presented. These codes, called braided block codes (BBCs), operate on continuous data streams and are constructed by interconnection of two component block codes. BBCs can be considered as convolutional (or sliding) version of either Elias' product codes or expander ...
Dmitri Truhachev   +2 more
exaly   +2 more sources

On multilevel block modulation codes

IEEE Transactions on Information Theory, 1991
The multilevel technique for combining block coding and modulation is investigated. A general formulation is presented for multilevel modulation codes in terms of component codes with appropriate distance measures. A specific method for constructing multilevel block modulation codes with interdependency among component codes is proposed.
T Kasami
exaly   +2 more sources

Minimal trellises for block codes

IEEE Transactions on Information Theory, 1988
Basic concepts in the study of trellises of block codes are defined. It is shown that minimal proper trellises exist for all block codes. Bounds on the sizes of such trellises are established. These bounds are shown to be exact for maximum distance separable codes and nearly so for perfect codes.
exaly   +2 more sources

Guided blocks WOM codes

Information Processing Letters, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gilad Baruch   +2 more
openaire   +1 more source

A* decoding of block codes

IEEE Transactions on Communications, 1996
The A* algorithm is applied to maximum-likelihood soft-decision decoding of binary linear block codes. This paper gives a tutorial on the A* algorithm, compares the decoding complexity with that of exhaustive search and Viterbi decoding algorithms, and presents performance curves obtained for several codes.
Laura Ekroot, Sam Dolinar
openaire   +1 more source

On polyalphabetic block codes

IEEE Information Theory Workshop, 2005., 2005
A polyalphabetic (or mixed) block code is a set of codewords of finite length, where every symbol of a codeword belongs to its own alphabet. In contrast to previous publications we consider a general case, where we do not assume any algebraic structure of the alphabets and the codes.
Vladimir Sidorenko   +4 more
openaire   +1 more source

Block and sliding-block source coding

IEEE Transactions on Information Theory, 1977
A new form of source coding subject to a fidelity criterion, called sliding-block coding, has recently been introduced by Gray, Neuhoff, and Ornstein. A method of conversion from block coding to sliding-block coding, or vice versa, with an arbitrarily small increase in rate is shown for ergodic sources.
Paul C. Shields, David L. Neuhoff
openaire   +2 more sources

Block truncation coding with entropy coding

IEEE Transactions on Communications, 1995
Block truncation coding (BTC) is a simple and fast image compression algorithm which achieves a constant bit rate of 2.0 bits per pixel. The method is however suboptimal. We propose a modification of BTC in which the compression ratio is improved by coding the quantization data and the bit plane by arithmetic coding with an adaptive modelling scheme ...
Pasi Fränti, Olli Nevalainen
openaire   +1 more source

Extension of source coding theorems for block codes to sliding-block codes

IEEE Transactions on Information Theory, 1980
For arbitrary alphabets and single-letter fidelity criteria, two theorems are given which allow any fixed-rate or variable-rate source coding theorem for block codes to be extended to sliding-block codes. Applications are given to universal coding and to the coding of a stationary nonergodic source.
openaire   +1 more source

Improved Code Shortening for Block and Product Codes

2006 IEEE 63rd Vehicular Technology Conference, 2006
Code shortening is commonly performed in practice but its analytical decoding performance is not well understood. In this letter, we present tight bounds for estimating the weight enumerator and hence BER (bit error rate) performance of linear shortened and shortened-extended block/product codes operating in AWGN and Rayleigh fading channels.
Kai Ching Lim, Yong Liang Guan 0001
openaire   +1 more source

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