Results 1 to 10 of about 92,025 (163)

Optimized Design of Distributed Quasi-Cyclic LDPC Coded Spatial Modulation [PDF]

open access: yesSensors, 2023
We propose a distributed quasi-cyclic low-density parity-check (QC-LDPC) coded spatial modulation (D-QC-LDPCC-SM) scheme with source, relay and destination nodes. At the source and relay, two distinct QC-LDPC codes are used.
Chunli Zhao   +4 more
doaj   +2 more sources

A construction for girth‐8 QC‐LDPC codes using Golomb rulers

open access: yesElectronics Letters, 2022
In this paper, an algebraic construction of regular QC‐LDPC codes by using the modular multiplication table mod P and Golomb rulers are proposed. It is proved that the proposed QC‐LDPC codes based on a Golomb ruler of length L have girth at least 8 if P ...
Inseon Kim, Hong‐Yeop Song
doaj   +2 more sources

Constructing Grith Eight GC-LDPC Codes Based on the GCD FLRM Matrix with a New Lower Bound [PDF]

open access: yesSensors, 2022
By connecting multiple short, local low-density parity-check (LDPC) codes with a global parity check, the globally coupled (GC) LDPC code can attain high performances with low complexities.
Kun Zhu, Hongwen Yang
doaj   +2 more sources

Constructing LDPC Codes with Any Desired Girth [PDF]

open access: yesSensors, 2021
In wireless sensor networks, the reliability of communication can be greatly improved by applying low-density parity-check (LDPC) codes. Algorithms based on progressive-edge-growth (PEG) pattern and quasi-cyclic (QC) pattern are the mainstream approaches
Chaohui Gao   +3 more
doaj   +2 more sources

Construction of Efficient High-Rate Protograph QC-LDPC Codes by Joint EXIT Chart, PEG, AWD, and QC-NLACE Techniques [PDF]

open access: yesEntropy
To obtain efficient channel codes with high power efficiency at moderate signal-to-noise ratios (SNRs), an efficient high-rate protograph quasi-cyclic (QC) low-density parity-check (LDPC) codes is optimally constructed.
Ying Chen   +4 more
doaj   +2 more sources

On a class of column‐weight 3 decomposable LDPC codes with the analysis of elementary trapping sets

open access: yesIET Communications
A column‐weight k LDPC code with the parity‐check matrix H is called decomposable if there exists a permutation π on the rows of H, such that π(H) can be decomposed into k column‐weight one matrix.
G. Raeisi, M. Gholami
doaj   +2 more sources

Full-Length Row-Multiplier QC-LDPC Codes With Girth Eight and Short Circulant Sizes

open access: yesIEEE 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

The design of structured LDPC codes with algorithmic graph construction [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2022
Low-Density Parity-Check (LDPC) codes are among the most effective modern error-correcting codes due to their excellent correction performance and highly parallel decoding scheme.
Wojciech Sułek
doaj   +1 more source

Distributed QC-LDPC Coded Spatial Modulation for Half-Duplex Wireless Communications [PDF]

open access: yesRadioengineering, 2022
The bit error rate (BER) performance of spatial modulation (SM) can be further improved by applying quasi-cyclic low-density parity-check (QC-LDPC) codes recommended in 5G to SM.
C. L. Zhao   +4 more
doaj  

Energy-Efficient Raptor-like LDPC Coding Scheme Design and Implementation for IoT Communication Systems

open access: yesEnergies, 2023
The large number of inexpensive and energy-efficient terminals in IoT systems is one of the emerging elements of the recent landscape of information and communication technologies.
Jakub Hyla, Wojciech Sułek
doaj   +1 more source

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