Results 81 to 90 of about 13,741 (205)

Threshold Saturation for Nonbinary SC-LDPC Codes on the Binary Erasure Channel

, 2016
We analyze the asymptotic performance of nonbinary spatially-coupled low-density parity-check (SC-LDPC) code ensembles defined over the general linear group on the binary erasure channel. In particular, we prove threshold saturation of belief propagation
Amat, Alexandre Graell i, Andriyanova, Iryna   +1 more
core   +4 more sources

Deep Learning Based Design of Binary Signalling for Optical Wireless Communication Systems With 2D Receiver

IET Optoelectronics, Volume 19, Issue 1, January/December 2025.
We apply a deep learning (DL) technique to binary signalling design for optical wireless communication (OWC) system with a 2D LED transmitter array and an arrayed 2D receiver. It is demonstrated that the DL‐based signalling design algorithm is feasible for OWC system, considering physical channel effect. ABSTRACT Recently, deep learning (DL) techniques
Yongwoon Hwang, Chung Ghiu Lee, Soeun Kim   +2 more
wiley   +1 more source

Performance of Cascade and LDPC Codes for Information Reconciliation on Industrial Quantum Key Distribution Systems

IET Quantum Communication, Volume 6, Issue 1, January/December 2025.
This paper evaluates Cascade and LDPC codes for information reconciliation in industrial quantum key distribution systems. We highlight efficient methods for minimising key mismatches and optimising performance by analysing often overlooked aspects and proposing new metrics.
Ronny Mueller, Claudia De Lazzari, Fernando Chirici, Ilaria Vagniluca, Leif Katsuo Oxenløwe, Søren Forchhammer, Alessandro Zavatta, Davide Bacco   +7 more
wiley   +1 more source

Rateless Coded Multi-User Uplink Transmission With Distributed Fronthaul Compression in Cloud RAN

IEEE Access, 2020
In this paper, we design the rateless coded uplink transmission in cloud radio access network (C-RAN) with two users, two remote radio heads (RRHs), and one baseband processing unit (BBU) pool under block fading channel.
Yu Zhang, Zhehao Fan, Limin Meng
doaj   +1 more source

Quantum Secure Image Transmission: A Chaos‐Assisted Quantum Key Distribution Approach Using Entanglement

IET Quantum Communication, Volume 6, Issue 1, January/December 2025.
A novel secure image transmission scheme has been proposed using the logistic chaos map and the Ekert protocol. The quantum key distribution can be used to generate seed parameters for classical chaos, thus ensuring a strong encryption method. ABSTRACT The emergence of quantum computing has introduced unprecedented security challenges to conventional ...
Raiyan Rahman, Md Shawmoon Azad, Mohammed Rakibul Hasan, Syed Emad Uddin Shubha, M. R. C. Mahdy   +4 more
wiley   +1 more source

Efficient LDPC Code Design based on Genetic Algorithm for IoT Applications

EAI Endorsed Transactions on Industrial Networks and Intelligent Systems
In this paper, we propose a low-density parity check (LDPC) code design scheme that improves the performance of the existing genetic algorithm-based LDPC scheme. In particular, we enhance the performance of the LDPC code by removing the girth-4 property
Thanh-Loc Nguyen-Van, Tan Do Duy, Thien Huynh-The   +2 more
doaj   +1 more source

Quasi-Cyclic Asymptotically Regular LDPC Codes

, 2010
Families of "asymptotically regular" LDPC block code ensembles can be formed by terminating (J,K)-regular protograph-based LDPC convolutional codes. By varying the termination length, we obtain a large selection of LDPC block code ensembles with varying ...
Costello Jr, Daniel J., Lentmaier, Michael, Mitchell, David G. M., Smarandache, Roxana   +3 more
core   +1 more source

Design and Reception Method of Code Shift Keying Signals With Power‐of‐Two Phase Intervals

IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.
A novel approach for the design and reception of CSK signals with a phase interval mapping of power‐of‐two chips is proposed. This method is capable of significantly reducing the demodulation complexity while mitigating the intersymbol interference. ABSTRACT Precise point positioning (PPP) technology has garnered extensive attention for its ability to ...
Nengjie Yu, Dun Wang, Xiaohui Ba, Mingquan Lu, Shaobo Shen   +4 more
wiley   +1 more source

Methods of Sparse Measurement Matrix Optimization for Compressed Sensing

IET Signal Processing, Volume 2025, Issue 1, 2025.
In compressed sensing (CS), a sparse measurement matrix with few nonzero entries is more competitive than a dense matrix in reducing the number of multiplication units. Recent studies indicate that an optimized measurement matrix having low coherence with a specified dictionary can significantly improve the reconstruction performance.
Renjie Yi, Shunan Han, Peng Liu, Bo Zhang, Hang Liu, Chao Zhai   +5 more
wiley   +1 more source

Differentially Encoded LDPC Codes—Part II: General Case and Code Optimization

EURASIP Journal on Wireless Communications and Networking, 2008
This two-part series of papers studies the theory and practice of differentially encoded low-density parity-check (DE-LDPC) codes, especially in the context of noncoherent detection.
Li (Tiffany) Jing
doaj