Results 21 to 30 of about 13,788 (166)

Multisource SWIPT-based coded cooperation:rate compatible codes and codeword splitting protocol

open access: yesEURASIP Journal on Wireless Communications and Networking, 2020
To achieve a high reliable and energy-saving green communication, we investigate a multisource simultaneous wireless information and power transfer (SWIPT)-based coded cooperation where the relay can realize information decoding and energy harvesting ...
Shunwai Zhang, Lingjun Kong, Jun Li
doaj   +1 more source

Performance Analysis for Cooperative Communication System with QC-LDPC Codes Constructed with Integer Sequences

open access: yesDiscrete Dynamics in Nature and Society, 2015
This paper presents four different integer sequences to construct quasi-cyclic low-density parity-check (QC-LDPC) codes with mathematical theory. The paper introduces the procedure of the coding principle and coding.
Yan Zhang, Feng-fan Yang, Weijun Song
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

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  

A construction of the high-rate regular quasi-cyclic LDPC codes

open access: yesEURASIP Journal on Wireless Communications and Networking, 2019
In this paper, a scheme to construct the high-rate regular quasi-cyclic low-density parity-check (QC-LDPC) codes is developed based on the finite geometry low-density parity-check (LDPC) codes.
Qi Meng   +3 more
doaj   +1 more source

Constructing Large Girth QC Protograph LDPC Codes Based on PSD-PEG Algorithm

open access: yesIEEE Access, 2017
For a given base graph, the lifted graph can be obtained by a copy-and-permute procedure. If the permutation is cyclic, the lifted graph corresponds to a quasi-cyclic (QC) protograph low-density parity-check (LDPC) code.
Xue-Qin Jiang   +3 more
doaj   +1 more source

Constructing LDPC Codes with Any Desired Girth

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   +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

A 38.64-Gb/s Large-CPM 2-KB LDPC Decoder Implementation for nand Flash Memories

open access: yesIEEE Open Journal of Circuits and Systems, 2022
The routing congestion over a QC-LDPC decoder with a large circular permutation matrix (CPM) size has long been an obstacle to high throughput designs.
Li-Wei Liu   +3 more
doaj   +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

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