Results 1 to 10 of about 39,115 (248)

Sub-Graph Based Joint Sparse Graph for Sparse Code Multiple Access Systems [PDF]

open access: yesIEEE Access, 2018
Sparse code multiple access (SCMA) is a promising air interface candidate technique for next-generation mobile networks, especially for massive machine-type communications. In this paper, we design a low-density parity-check (LDPC) coded SCMA detector by
Ke Lai   +5 more
doaj   +4 more sources

3D EXIT Charts for Analyzing the 5G 3GPP New Radio LDPC Decoder [PDF]

open access: goldIEEE Access, 2020
Low Density Parity Check (LDPC) codes have been selected to provide channel coding for data in the next generation of wireless communication standard referred to in practice as the 3GPP New Radio (NR).
Shuai Shao   +3 more
doaj   +2 more sources

Deriving Good LDPC Convolutional Codes from LDPC Block Codes [PDF]

open access: yesIEEE Transactions on Information Theory, 2011
Low-density parity-check (LDPC) convolutional codes are capable of achieving excellent performance with low encoding and decoding complexity. In this paper we discuss several graph-cover-based methods for deriving families of time-invariant and time-varying LDPC convolutional codes from LDPC block codes and show how earlier proposed LDPC convolutional ...
Ali Emre Pusane   +2 more
exaly   +3 more sources

Decoder-in-the-Loop: Genetic Optimization-Based LDPC Code Design [PDF]

open access: yesIEEE Access, 2019
LDPC code design tools typically rely on asymptotic code behavior and are affected by an unavoidable performance degradation due to model imperfections in the short length regime.
Ahmed Elkelesh   +4 more
doaj   +4 more sources

High performance short-block binary regular LDPC codes

open access: yesAEJ - 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 ...
AbdelMalik Taleb-Ahmed
exaly   +3 more sources

LDPC Codes on Balanced Incomplete Block Designs: Construction, Girth, and Cycle Structure Analysis [PDF]

open access: yesEntropy
In this paper, we investigate the cycle structure inherent in the Tanner graphs of low-density parity-check (LDPC) codes constructed from balanced incomplete block designs (BIBDs).
Hengzhou Xu   +4 more
doaj   +2 more sources

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

Evaluation of LDPC codes efficiency in channels with fading [PDF]

open access: yesE3S Web of Conferences, 2023
The article discusses the operation of communication systems using a low-density parity check codes in channels with multipath propagation. This class of codes has found wide application in modern communication and broadcasting systems and is one of the ...
Shinkevich Artem   +5 more
doaj   +1 more source

REDUCING LDPC DECODER COMPLEXITY BY USING FPGA BASED ON MIN SUM ALGORITHM

open access: yesMağallaẗ Al-kūfaẗ Al-handasiyyaẗ, 2022
Low-Density Parity-Check (LDPC) code approaches Shannon–limit execution for twofold ‎field and long code lengths. The point of this work is to propose an LDPC calculation for Min ‎Sum (MS) deciphering and playing out its equipment execution investigation
Butheena R. kadhim, Fatih Korkmaz
doaj   +1 more source

Protection scheme of subcarrier index in OFDM with index modulation aided by LDPC coding

open access: yesXibei Gongye Daxue Xuebao, 2021
The receiver of OFDM with Index Modulation (OFDM-IM) usually adopts a Log Likelihood Ratio (LLR) detection algorithm based on the activation state of subcarriers.

doaj   +1 more source

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