A simple turbo decoding scheme is proposed for partial-response (PR) channels by using high-rate parity-check codes as an outer error-correction code (ECC), The use of the simple paritycodes enables a simplified and ...
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A simple turbo decoding scheme is proposed for partial-response (PR) channels by using high-rate parity-check codes as an outer error-correction code (ECC), The use of the simple paritycodes enables a simplified and high-speed implementation of the a posterior probability (APP) decoder. Its key feature is an iterative decoding step for the parallel concatenation of two parity-check outer codes connected via an interleaver, The parity iterative decoding can provide the high-rate parity-check outer codes with superior correction capability for random error-events, so it can help to reduce the decoding latency, The combination of the serial turbo decoding for a modified E-2 PR ((MEPR)-P-2) channel and the parity iterative decoding demonstrated a coding gain of 4-5 dB at a bit error rate of 1.0E-5 for a coding rate of 8/9.
A simple turbo decoding scheme is proposed for partial-response (PR) channels by using high-rate parity-check codes as an outer error-correction code (ECC), The use of the simple paritycodes enables a simplified and ...
详细信息
A simple turbo decoding scheme is proposed for partial-response (PR) channels by using high-rate parity-check codes as an outer error-correction code (ECC), The use of the simple paritycodes enables a simplified and high-speed implementation of the a posterior probability (APP) decoder. Its key feature is an iterative decoding step for the parallel concatenation of two parity-check outer codes connected via an interleaver, The parity iterative decoding can provide the high-rate parity-check outer codes with superior correction capability for random error-events, so it can help to reduce the decoding latency, The combination of the serial turbo decoding for a modified E-2 PR ((MEPR)-P-2) channel and the parity iterative decoding demonstrated a coding gain of 4-5 dB at a bit error rate of 1.0E-5 for a coding rate of 8/9.
This paper delineates an application of two classes of parity-check codes to the design for failure-tolerant counters. They are 1) a modified first-order Reed-Muller code and 2) the perfect Hamming code. The first cod...
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This paper delineates an application of two classes of parity-check codes to the design for failure-tolerant counters. They are 1) a modified first-order Reed-Muller code and 2) the perfect Hamming code. The first code employs a majority element for implementing the error-correcting scheme while the second one makes use of a variable 2j-2+1-out-of-2j-1+1 majority element. These coding techniques can be applied in principle to other logic hardware to increase its reliability.
The present paper has considered multithreshold decoders for self-orthogonal codes providing a near-optimal efficiency of the error correction under linear computational complexity. New divergence principle used withi...
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ISBN:
(纸本)9781538605851
The present paper has considered multithreshold decoders for self-orthogonal codes providing a near-optimal efficiency of the error correction under linear computational complexity. New divergence principle used within construction and decoding convolutional codes has been discussed. The paper has shown that usage of such principle allows significantly approximating an area of the decoder effective operation to the channel capacity. Application of obtained self-orthogonal codes within construction of concatenated convolutional codes where parity-check codes are used as the outer codes has been indicated, as well as simulation results for the obtained concatenated construction have been represented.
Multithreshold decoders (MTD) of self-orthogonal codes (SOC) for erasure channels implementing error correction methods based on searching global extremum of functions in discrete spaces are considered. To increase th...
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ISBN:
(纸本)9781728117393
Multithreshold decoders (MTD) of self-orthogonal codes (SOC) for erasure channels implementing error correction methods based on searching global extremum of functions in discrete spaces are considered. To increase the efficiency of erasure recoveries the concatenated codes comprising inner SOC and outer codes being simple for decoding such as parity-check codes, Hamming codes or BCH codes are offered. The usage of the codes offered provides efficient erasure recovery when operating near channel capacity with linear decoder complexity. The questions of high-throughput software MTD implementation recovering erasures using GPU are considered. The MTD versions developed are shown to be able to perform data flow decoding with the rate of several hundred MB/s using GPU.
Mutithreshold decoding for convolutional codes implementing optimization methods to correct errors based on the search of global extremum of functionals in discrete spaces are considered. The implementation of diverge...
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ISBN:
(纸本)9781538656839
Mutithreshold decoding for convolutional codes implementing optimization methods to correct errors based on the search of global extremum of functionals in discrete spaces are considered. The implementation of divergent coding methods with triple concatenation to achieve highly efficient decoding near channel capacity is described. The possibilities of this approach while using concatenation are shown. Multialgorithmic decoding is offered. It implements the principle of divergence with simultaneous usage of two types of decoders: Viterbi algorithm and multithreshold decoding. The implementation of multialgorithmic decoding is shown to substantially decrease decoding complexity at low signal to noise ratio.
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