Design and application of a lightweight management software for Internet of things node by Shiyou GUAN, Zaiqun WU

“…The modular design idea was used to abstract the logic of IoT nodes, and the function and control logic of nodes were divided into atoms, the atomic modules can be freely combined and deployed according to different application, they support single system and distributed system deployment, and were pluggable and easy to expand, meet the diversified design needs of IoT applications.The design and implementation of lightweight IoT node management software based on this idea were described in detail.The test results show that the software only needs 14 872 byte of flash and 1 976 byte of RAM, which can be used in limited hardware resources.This software framework was used to design smart hotel RCU(room control unit), including the design of voice gateway node based on esp32 (Wi-Fi SOC) and 4-bit key panel node based on cx32l003 (MCU).The RCU designed with this software framework can deploy to different hotels only needed to be designed once, which solves the problem that RCU cannot be used in different hotels and needs to be designed and modified repeatedly, and greatly speeds up the process of smart hotel deployment.At present, the RCU has been deployed and operated stably in Xi'an, Tupai and other express hotels.…”
Get full text

The Research on Improved Companding Transformation for Reducing PAPR in Underwater Acoustic OFDM Communication System by Jinqiu Wu, Gang Qiao, Xiaofei Qi

“…Traditional amplitude limiting technique can reduce PAPR in OFDM system effectively, at the cost of reducing the bit error rate (BER). However the companding transformation has far less computation complexity than SLM or PTS technologies and can improve the BER performance compared to the amplitude limiting technique simultaneously. …”
Get full text

Experimental Evaluation of MIMO-OFDM System with Rateless Space-Time Block Code by Ali H. Alqahtani, Khaled Humadi, Ahmed Iyanda Sulyman, Abdulhameed Alsanie

“…This paper presents experimental results on the performance of a 2×2 MIMO-OFDM system with RSTBC as measured in a testbed implemented with field-programmable gate array (FPGA). The average bit error rate (BER) performance of the proposed scheme is evaluated experimentally, and the results agree closely with simulation and analytical upper bound. …”
Get full text

The Inconsistency of the Algorithms of Jaro–Winkler and Needleman–Wunsch Applied to DNA Chain Similarity Results by Boris Melnikov

Get full text

Hybrid Model: An Efficient Symmetric Multiprocessor Reference Model by Shupeng Wang, Kai Huang, Tianyi Xie, Xiaolang Yan

“…Hybrid Model has been implemented in an efficient 32-bit symmetric multiprocessor verification. Experimental results show our proposed model is a fast, accurate, and efficient symmetric multiprocessor reference model and it is able to help designers to locate design errors easily and accurately.…”
Get full text

Research and performance analysis on multi-point light-emitting diodes-array intra-vehicle visible light communication systems with DC-biased optical–orthogonal... by Xiaoqing Song, Zixu Zhao, Youcai Wei, Muyu Wang

“…Moreover, the maximum data rate can be improved from 107.8 to 477.4 Mb/s with the bit error rate at approximately 10 −5 , which meet the illumination and data transmission rate requirement for the special-type vehicle.…”
Get full text

Doubly-selective channel estimation for generalized frequency division multiplexing systems based on deep learning by Ying WANG, Jun REN, Ke SHI, Bin LIN

“…There exist intrinsic inter-carrier interference and inter-subsymbol interference in generalized frequency division multiplexing (GFDM) systems.Under condition of time-frequency doubly selective channels, severe effects of pilot contamination would occur and lead to significant performance degradation for the pilot-based channel estimations.To this end, a channel estimation framework for GFDM systems based on deep learning was proposed, which took the low-resolution image constructed with the least squares estimated channel gains of the pilot symbols as input.Consequently, a high-resolution image about the channel time-frequency response was recovered through a deep residual network, and the channel estimation was achieved for GFDM systems.A simulation system for the proposed GFDM time-frequency doubly selective channel estimation algorithm based on deep residual network was developed, and the optimal parameters of the deep residual network were determined through an offline training process.Simulation results show that the proposed algorithm can achieve better performance near to minimum mean square error (MMSE) estimation in terms of estimation error and bit error rate (BER), and has robust Doppler frequency shift generalization capability.…”
Get full text

Fuzzy Coordinated PI Controller: Application to the Real-Time Pressure Control Process by N. Kanagaraj, P. Sivashanmugam, S. Paramasivam

“…The proposed control algorithm is experimentally implemented for the real-time pressure control of a pilot air tank system and validated using a high-speed 32-bit ARM7 embedded microcontroller board (ATMEL AT91M55800A). …”
Get full text

THE EFFECTIVENESS OF USING THE LABORATORY IN LEARNING SCIENCE by Ainun Ilmi Wahidah, Alif Mardiana, Siti Anisatul Iriani, Amalia Safitri, Asya Fikriyatun Nihaya, Mufidatul Nafiah

“…Judging from the aspect of the laboratory space, the science laboratory of SMPN 2 Lumajang still needs to be improved a bit, such as a space to store tools and materials, and there is no preparation room to make preparations before the practicum begins. …”
Get full text

Cryptanalysis of an Image Encryption Algorithm Using DNA Coding and Chaos by Yuzhuo Zhao, Qiqin Shi, Qun Ding

“…In addition, we also propose an improved logistic chaotic map with random bit-position scrambling. The improved chaotic map has a wider parameter range and a larger Lyapunov exponent. …”
Get full text

High In Situ Stress Anisotropy Lead to Formation of Complex Fracture Patterns by Xinjiang Yan, Zehao Zhang, Jifei Yu, Yanfeng Cao, Yanguang Yuan

Get full text

System Level Evaluation of Innovative Coded MIMO-OFDM Systems for Broadcasting Digital TV by Y. Nasser, J.-F. Hélard, M. Crussière

“…Eventually, we propose to adapt a technique called effective exponential signal-to-noise ratio (SNR) mapping (EESM) to predict the bit error rate (BER) at the output of the channel decoder in the MIMO systems. …”
Get full text

Copyright protection of deep image classification models by Y.D. Vybornova, D.I. Ulyanov

“…A pseudo-hologram is an image synthesized on the basis of a given binary sequence by arranging pulses for bit encoding in the spectral region. Results of the experimental study show that the proposed method allows one to maintain the classification quality, while also retaining its performance regardless of the architecture of the protected neural network. …”
Get full text

Analyzing the Probability of Key Recovery in the Differential Attacks Against ChaCha by Nitin Kumar Sharma, Sabyasachi Dey

“…Aumasson et al. (2008) laid the groundwork for this attack, employing the concept of probabilistically neutral bits for key recovery. Subsequently, various enhancements have been made to this attack over the last few decades. …”
Get full text

Device-independent uncloneable encryption by Srijita Kundu, Ernest Y.-Z. Tan

“…Finally, we derive an ``extractor'' result for a two-adversary scenario, which in particular yields a single-decryptor encryption scheme for single bit-messages that achieves perfect anti-piracy security without needing the quantum random oracle model.…”
Get full text

Two-Party Quantum Private Comparison Protocol Based on Rotational Encryption by Min Hou, Yue Wu

“…Specifically, our protocol achieves a qubit efficiency of 50% by using two single photons to compare one bit of classical information, and single photons are easier to prepare than multi-qubit and d-dimensional quantum states.…”
Get full text

Effectiveness of the Spatial Domain Techniques in Digital Image Steganography by Rosshini Selvamani, Yusliza Yusoff

“…The purpose of this research is to determine the best and most effective algorithm among the three competitive spatial domain algorithms, which are Least Significant Bit (LSB), Optimum Pixel Adjustment Procedure (OPAP), and Pixel Value Differencing (PVD) which in regard demonstrated the efficacy of spatial domain algorithms. …”
Get full text

Performance of OFDM: FSO Communication System with Hybrid Channel Codes during Weak Turbulence by Ritu Gupta, Tara Singh Kamal, Preeti Singh

“…The obtained results are the comparative study of various channel coding schemes in terms of bit error rate (BER) vs. signal-to-noise ratio (SNR). …”
Get full text

Dynamic Fracture Toughness and Dynamic Tensile Strength of the Rock from Different Depths of Beijing Datai Well by Ke Man, Xiaoli Liu

“…The testing data show that both the dynamic fracture toughness and dynamic tensile strength increase with the loading rate and the dynamic tensile strength increases a little bit more quickly than the dynamic fracture toughness. …”
Get full text

Estimating time and frequency under imperfect channel knowledge using ECM and SAGE algorithms in multi-relay cooperative networks by Ezhilazhagan Chenguttuvan, Lakshmi Prabha Karuppiah, Karuppanan Sakthisudhan

“…To demonstrate improved bit error rate (BER) performance, MCFOs and MTOs should be treated with less computational complexity. …”
Get full text