Results 41 to 50 of about 69,988 (217)

On the Girth of Tanner (3, 13) Quasi-Cyclic LDPC Codes

open access: yesIEEE Access, 2019
Girth is an important structural property of low-density parity-check (LDPC) codes. Motivated by the works on the girth of Tanner (3, 5), (3, 7), (3, 11), and (5, 7) quasi-cyclic (QC) LDPC codes, we, in this paper, study the girth of Tanner (3, 13) QC ...
Hengzhou Xu   +4 more
doaj   +1 more source

An Efficient Construction Method for Quasi-Cyclic Low Density Parity Check Codes

open access: yesIEEE Access, 2017
In this paper, we propose an optimized belief propagation (OBP) based progressive edge-growth (PEG) method for constructing quasi-cyclic low density parity check (QC-LDPC) codes. In this proposed method, Tanner graphs are built by progressively appending
Yiming Lei, Mingke Dong
doaj   +1 more source

On the Construction of Multitype Quasi-Cyclic Low-Density Parity-Check Codes With Different Girth and Length

open access: yesIEEE Access, 2021
Multitype quasi-cyclic (QC) low-density parity-check (LDPC) codes are a class of protograph LDPC codes lifted cyclically from protographs with multiple edges, represented by two weight and slope matrices.
Farzaneh Abedi, Mohammad Gholami
doaj   +1 more source

From Product Codes to Structured Generalized LDPC Codes [PDF]

open access: yes, 2010
Product codes, due to their relatively large minimum distance, are often seen as a natural solution for applications requiring low error floors.
Paolini, Enrico   +10 more
core   +1 more source

Tanner $(J,L)$ Quasi-Cyclic LDPC Codes: Girth Analysis and Derived Codes

open access: yesIEEE Access, 2019
Girth plays an important role in the design of low-density parity-check (LDPC) codes. Motivated by the works on the girth of some classes of Tanner quasi-cyclic (QC) LDPC codes, e.g., Tanner (3, 5), (3, 7), (3, 11), and (5, 7) codes, we, in this paper ...
Hengzhou Xu   +4 more
doaj   +1 more source

Ldpc Code Construction using Randomly Permutated Copies of Parity Check Matrix [PDF]

open access: yesمجلة جامعة النجاح للأبحاث العلوم الطبيعية, 2018
A construction technique is proposed for low-density parity check (LDPC) codes. It uses a base parity check matrix designed from a ran-dom or constructed construction method as Gallager or Quasi-Cyclic LDPC (QC-LDPC) codes in sequence to get codes with ...
Amr lulu, Ammar Abu-Hudrouss
doaj   +1 more source

Low latency low power bit flipping algorithms for LDPC decoding [PDF]

open access: yes, 2010
Low Density Parity Check (LDPC) codes have been adopted in a number of wired and wireless communication standards due to their improved error correcting ability and relatively simple decoder structure.
Koçak, T   +11 more
core   +1 more source

LDPC Decoder of High Speed Multi-Rate DVB-S2 Based on FPGA

open access: yesXibei Gongye Daxue Xuebao, 2019
A multi-rate LDPC decoder architecture for DVB-S2 codes based on FPGA is proposed. Through elementary transformation on the parity check matrices of DVB-S2 LDPC codes, a new matrix whose left is a QC sub-matrix and right is Transformation of Staircase ...

doaj   +1 more source

An LDPC Decoder Architecture forWireless Sensor Network Applications [PDF]

open access: yes, 2012
The pervasive use of wireless sensors in a growing spectrum of human activities reinforces the need for devices with low energy dissipation. In this work, coded communication between a couple of wireless sensor devices is considered as a method to reduce
Biroli, Andrea Dario Giancarlo   +5 more
core   +1 more source

A massively parallel implementation of QC-LDPC decoder on GPU [PDF]

open access: yes2011 IEEE 9th Symposium on Application Specific Processors (SASP), 2011
The graphics processor unit (GPU) is able to provide a low-cost and flexible software-based multi-core architecture for high performance computing. However, it is still very challenging to efficiently map the real-world applications to GPU and fully utilize the computational power of GPU. As a case study, we present a GPU-based implementation of a real-
Guohui Wang   +3 more
openaire   +1 more source

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