Results 81 to 90 of about 6,933 (191)

Multilevel coding scheme based on low-density parity-check codes in DAMB

open access: yesTongxin xuebao, 2006
A multilevel coding(MLC)scheme based on LDPC codes was investigated for digital amplitude modulation broadcasting(DAMB)system.Firstly,code rates of MLC were designed,then a multistage decoding strategy was provided based on reliability information ...
WANG Jia-qing, YU Xiao-yan, WU Le-nan
doaj   +2 more sources

Concatenated Turbo/LDPC codes for deep space communications: performance and implementation [PDF]

open access: yes, 2013
Deep space communications require error correction codes able to reach extremely low bit-error-rates, possibly with a steep waterfall region and without error floor. Several schemes have been proposed in the literature to achieve these goals.
Condo, Carlo
core  

Toward a 2D Local Implementation of Quantum Low-Density Parity-Check Codes

open access: yesPRX Quantum
Geometric locality is an important theoretical and practical factor for quantum low-density parity-check (qLDPC) codes that affects code performance and ease of physical realization. For device architectures restricted to two-dimensional (2D) local gates,
Noah Berthusen   +6 more
doaj   +1 more source

Nonlocal resources for error correction in quantum low-density parity-check codes

open access: yesPhysical Review Research
Quantum low-density parity-check (qLDPC) codes with high-performance and nonlocal stabilizers are an attractive alternative to the surface code because of their relatively high code rate and distance.
Omprakash Chandra   +2 more
doaj   +1 more source

Low-Complexity Non-Binary LDPC and Modulation Schemes communicating over MIMO Channels [PDF]

open access: yes, 2004
In this contribution, Pearl’s belief propagation (BP) algorithm is invoked for constructing a belief network, which is employed for developing a joint detection aided transmit diversity scheme and a non-binary LDPC decoder constructed over a finite field
Hanzo, L., Guo, F.
core  

Research on unequal error protection of irregular LDPC codes

open access: yesTongxin xuebao, 2005
An irregular low-density parity-check (LDPC) code with unequal error protection (UEP) property was proposed. A weight-increasing parity-check (WIPC) matrix was constructed.
MA Pi-ming, YUAN Dong-feng, YANG Xiu-mei
doaj   +2 more sources

Fermion-to-Fermion Low-Density Parity-Check Codes

open access: yesCoRR
Simulating fermionic systems on qubit-based quantum computers often demands significant computational resources due to the requirement to map fermions to qubits. Thus, designing a fault-tolerant quantum computer that operates directly with fermions offers an effective solution to this challenge.
Chong-Yuan Xu, Ze-Chuan Liu, Yong Xu
openaire   +2 more sources

On the Gap to Channel Capacity of Generalized Low-Density Parity-Check Codes

open access: yesIEEE Open Journal of the Communications Society
In this study, the gap to channel capacity of generalized low-density parity-check (GLDPC) codes under the a posteriori probability (APP) decoder on the binary input additive white Gaussian noise (BI-AWGN) channel is analyzed.
Dongxu Chang   +4 more
doaj   +1 more source

Generalised array low‐density parity‐check codes

open access: yesIET Communications, 2014
In this study, using Group Permutation Low‐Density Parity‐Check (GP‐LDPC) codes, the authors generalise the concept of array Low‐Density Parity‐Check (LDPC) codes from fields of prime order to those of prime power order. In fact, they consider the additive group of the finite field GF( q ),
openaire   +1 more source

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