Results 11 to 20 of about 26,841 (236)
Connectivity constrains quantum codes [PDF]
Quantum, 2022 Quantum low-density parity-check (LDPC) codes are an important class of quantum error correcting codes. In such codes, each qubit only affects a constant number of syndrome bits, and each syndrome bit only relies on some constant number of qubits ...
Nouédyn Baspin, Anirudh Krishna
doaj +1 more source
Asymmetric quantum LDPC codes [PDF]
2008 IEEE International Symposium on Information Theory, 2008 5 pages, 1 figure, 1 table, to appear in the Proceedings of the 2008 IEEE International Symposium on Information ...
Sarvepalli, Pradeep Kiran +2 more
openaire +2 more sources
Optimizing quasi-cyclic spatially coupled LDPC codes by eliminating harmful objects
EURASIP Journal on Wireless Communications and Networking, 2023 It is well known that some harmful objects in the Tanner graph of low-density parity-check (LDPC) codes have a negative impact on their error correction performance under iterative message-passing decoding.
Massimo Battaglioni +4 more
doaj +1 more source
Randomly Punctured LDPC Codes [PDF]
IEEE Journal on Selected Areas in Communications, 2016 In this paper, we present a random puncturing analysis of low-density parity-check (LDPC) code ensembles. We derive a simple analytic expression for the iterative belief propagation (BP) decoding threshold of a randomly punctured LDPC code ensemble on the binary erasure channel (BEC) and show that, with respect to the BP threshold, the strength and ...
Mitchell, David G. M. +3 more
openaire +3 more sources
, 2021 Στα ψηφιακά συστήματα, η πληροφορία κωδικοποιείται σε ακολουθίες από 0και 1, που αντιστοιχούν στις δύο δυνατές καταστάσεις των τρανζίστορ, on - off, τα οποία λειτουργούν ως διακόπτες. Το πλεονέκτημα αυτό έχει επιφέρει σημαντικέςαλλαγές στον τρόπο επεξεργασίας της πληροφορίας.
openaire +1 more source
A Time Sharing Hybrid Probabilistic Shaping Scheme for Nonbinary LDPC Codes
IEEE Access, 2020 A time sharing (TS) hybrid probabilistic shaping (HPS) scheme for nonbinary (NB) LDPC codes is proposed. For the conventional probabilistic shaping (CPS) scheme, the demodulator uses bit-metric decoding (BMD) for binary LDPC codes and NB LDPC codes ...
Zhanji Wu, Weimin Kang
doaj +1 more source
Effective identification of dominant fully absorbing sets for Raptor-like LDPC codes
ETRI Journal, 2023 The error-rate floor of low-density parity-check (LDPC) codes is attributed to the trapping sets of their Tanner graphs. Among them, fully absorbing sets dominantly affect the error-rate performance, especially for short blocklengths.
Woncheol Cho +3 more
doaj +1 more source
Tree-Based Construction of LDPC Codes Having Good Pseudocodeword Weights [PDF]
, 2005 We present a tree-based construction of LDPC codes that have minimum pseudocodeword weight equal to or almost equal to the minimum distance, and perform well with iterative decoding.
Kelley, Christine +2 more
core +4 more sources
High performance short-block binary regular LDPC codes
Alexandria Engineering Journal, 2018 LDPC code shows a good performance with long-block codes. However, certain channels are constrained to use short-block codes due to latency. Therefore, concatenated LDPC codes with iterative decoding is a good choice to get a good performance ...
Latifa Mostari, Abdelmalik Taleb-Ahmed
doaj +1 more source
Full-Length Row-Multiplier QC-LDPC Codes With Girth Eight and Short Circulant Sizes
IEEE Access, 2023 As a special case of a quasi-cyclic (QC) low-density parity-check (LDPC) code, a full-length row-multiplier (FLRM) QC-LDPC code is described by a compact exponent matrix based on two sequences of integers.
Juhua Wang +3 more
doaj +1 more source