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20242026
most citedQuantum Error Correction near the Coding Theoretical Bound

5 citations · 6 across the 21 of their papers we have counts for

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cs.IT2026

MacKay-Neal Codes Achieve Capacity under MAP Decoding

Kenta Kasai

Statistical-mechanical analyses predict that MacKay-Neal codes can achieve channel capacity at fixed degrees. We prove this prediction for the uncoupled MN socket ense…

cs.IT2026

Spatially Coupled MacKay-Neal Codes on Symmetric Markov Noise: A Reduction to BMS Channels

Kenta Kasai

We prove a capacity criterion for fixed-degree spatially coupled MacKay--Neal codes on additive symmetric Markov noise. The noise bit flips with probability , so the channel has…

cs.IT2026

Threshold Saturation from a Bounded Region in Multidimensional Spatially Coupled Codes over the BEC

Kenta Kasai

We prove that a bounded shortened region initiates decoding throughout multidimensional spatially coupled regular LDPC and MacKay--Neal (MN) codes over the binary erasure channel (…

cs.IT2026

CPM-LDPC Codes Attaining the Minimum-Distance Bound

Kenta Kasai

We study binary quasi-cyclic LDPC codes whose parity-check matrices are full arrays of single circulant permutation matrices (CPMs), referred to here as CPM-LDPC codes. Their minim…

cs.IT2026

Spatially Coupled MacKay-Neal Codes Achieve Capacity on BMS Channels at Fixed Degrees

Kenta Kasai

We establish two degree-dependent results for spatially coupled MacKay-Neal codes on binary-input memoryless symmetric channels. The ensembles use uniform random smoothing and shor…

cs.IT2025

Explicit Construction of Quantum Quasi-Cyclic Low-Density Parity-Check Codes with Column Weight 2 and Girth 12

Daiki Komoto, Kenta Kasai

This study proposes an explicit construction method for quantum quasi-cyclic low-density parity-check (QC-LDPC) codes with a girth of 12. The proposed method designs parity-check m…

cs.IT2024

Recursively Extended Permutation Codes under Chebyshev Distance

Tomoya Hirobe, Kenta Kasai

We study recursively extended permutation (REP) codes under the Chebyshev distance. An REP code is built by repeatedly inserting an allowed symbol in the first coordinate and relab…