Results 61 to 70 of about 50,935 (205)

Cost‐Effective DNA Storage System with DNA Movable Type

Advanced Science, Volume 12, Issue 9, March 6, 2025.
This study presents a cost‐effective “DNA‐movable‐type storage” system inspired by movable type printing. Utilizing reusable prefabricated DNA‐MTs and an automated inkjet printer, BISHENG‐1 stores and retrieves 43.7 KB of data in vitro and in vivo with only 350 DNA‐MTs, achieving storage costs of $122 MB−1–significantly more cost‐efficient than ...
Chenyang Wang, Di Wei, Zheng Wei, Dongxin Yang, Jing Xing, Yunze Wang, Xiaotong Wang, Pei Wang, Guannan Ma, Xinru Zhang, Haolan Li, Chuan Tang, Pengfei Hou, Jie Wang, Renjun Gao, Guiqiu Xie, Cuidan Li, Yingjiao Ju, Peihan Wang, Liya Yue, Yongliang Zhao, Yongjie Sheng, Jingfa Xiao, Haitao Niu, Sihong Xu, Huaiyi Yang, Di Liu, Bo Duan, Dongbo Bu, Guangming Tan, Fei Chen   +30 more
wiley   +1 more source

Improving the efficiency of the LDPC code-based McEliece cryptosystem through irregular codes

, 2013
We consider the framework of the McEliece cryptosystem based on LDPC codes, which is a promising post-quantum alternative to classical public key cryptosystems.
Baldi, Marco, Bianchi, Marco, Chiaraluce, Franco, Maturo, Nicola   +3 more
core   +1 more source

On the Stopping Distance of SA-LDPC Codes by Transversal Designs

IEEE Access, 2018
In this paper, we analyze the size of the smallest stopping set (called the stopping distance) for the parity-check matrix of a superposed array low-density parity-check (SA-LDPC) code for column weights 3 and 4 by using the transversal design (TD ...
Zahra Ferdosi, Farhad Rahmati, Mohammad Hesam Tadayon   +2 more
doaj   +1 more source

Symbol detection aided channel prediction in fast‐varying massive MIMO systems: Framework and performance analysis

IET Communications, Volume 19, Issue 1, January/December 2025.
The transmission structure is designed to obtain the accurate channel state information in time‐varying environment. On this basis, communication performance of multiple‐input multiple‐output system is improved by symbol detection aided channel prediction.
Wei Gao, Junqiang Xiao, Chuan Liu, Wei Peng   +3 more
wiley   +1 more source

Low Density Parity Check Code (LDPC Codes) Overview [PDF]

arXiv, 2020
This paper basically expresses the core fundamentals and brief overview of the research of R. G. GALLAGER [1] on Low-Density Parity-Check (LDPC) codes and various parameters related to LDPC codes like, encoding and decoding of LDPC codes, code rate, parity check matrix, tanner graph.
arxiv  

A low‐complexity block EP‐based detector for iterative detection and decoding in unsourced random access

Electronics Letters, Volume 61, Issue 1, January/December 2025.
Here, a multi‐user signal iterative detection and decoding scheme named LBEP based on block expectation propagation (BEP) is proposed for LDPC‐coded two‐phase unsourced random access (URA) scheme. In the iteratively process, the approximation of matrix inversion is used to facilitate expectation propagation (EP). The numerical results show that, in the
Jinyang Chen, Renhui Xu, Xiaonan Cui, Laixian Peng, Wendong Zhao, Jinwei Wang   +5 more
wiley   +1 more source

Construction of High-Rate Regular Quasi-Cyclic LDPC Codes Based on Cyclic Difference Families [PDF]

, 2012
For a high-rate case, it is difficult to randomly construct good low-density parity-check (LDPC) codes of short and moderate lengths because their Tanner graphs are prone to making short cycles. Also, the existing high-rate quasi-cyclic (QC) LDPC codes can be constructed only for very restricted code parameters. In this paper, a new construction method
arxiv   +1 more source

5G‐coded fluid antenna multiple access over block fading channels

Electronics Letters, Volume 61, Issue 1, January/December 2025.
This letter investigates the use of 5G New Radio (NR) Modulation Coding Scheme (MCS) for FAMA systems to improve its connectivity over block fading channels. In particular, we propose an iterative decoding receiver with iterative interference covariance estimation, designed explicitly for slow fading channels.
Hanjiang Hong, Kai‐Kit Wong, Kin‐Fai Tong, Hao Xu, Haoyang Li   +4 more
wiley   +1 more source

On the Hub Number of Ring Graphs and Their Behavior Under Graph Operations

International Journal of Mathematics and Mathematical Sciences, Volume 2025, Issue 1, 2025.
This study examines the hub number of ring graphs and investigates their behavior under operations such as union, intersection, and join. Different findings for this parameter are found for a variety of types of ring graphs, such as commutative ring graphs, path ring graphs, complete ring graphs, cycle ring graphs, and star ring graphs, for which the ...
Mohammed Alsharafi, Haifa Ahmed, Saad Tobaili, Ayesha Ikram   +3 more
wiley   +1 more source

Spatially Coupled LDPC Codes Constructed from Protographs

, 2014
In this paper, we construct protograph-based spatially coupled low-density parity-check (SC-LDPC) codes by coupling together a series of L disjoint, or uncoupled, LDPC code Tanner graphs into a single coupled chain.
Costello Jr, Daniel J., Lentmaier, Michael, Mitchell, David G. M.   +2 more
core   +1 more source