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  1. 861

    Chaotic Spread-Spectrum Communication: A Comparative Study between Chaotic Synchronization and Matched Filtering by Arturs Aboltins, Andreas Ahrens, Nikolajs Tihomorskis

    Published 2024-07-01
    “…Our findings, based on the analysis of bit error ratio (BER) curves, demonstrate that in the case of a non-dispersive communication channel, the utilization of chaotic synchronization does not allow to achieve performance of correlation-based receivers. …”
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    Article
  2. 862

    ASSESSMENT OF ENVIRONMENTAL IMPACT OF ENERGY FACILITIES IN THE ISLAMIC REPUBLIC OF IRAN BY METHOD OF BUILDING COMPOSITE THREE-DIMENSIONAL MODELS by M. A. Mehdizadeh

    Published 2015-09-01
    “…The paper describes the techniques of applying bundled software ArcView with add-on modules ImageWarp and RASTRProfi for alignment of multiscale bit-mapped and direct-beam three-dimensional models with the object of evaluating ecological risks for diverse territories.The article evaluates the environmental impact of a thermal power plant near the city of Rasht (industrial area Saravan) and demonstrates analysis of the territorial distribution of the soil contamination with varied pollutants at different wind structures. …”
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  3. 863

    COGNITIVE GRAMMAR IN AN ENGLISH CLASSROOM, OR, HOW TO MAKE LIFE FOR RUSSIAN STUDENTS EASIER by A. V. Kravchenko

    Published 2013-12-01
    “…With regard to articles, the situation is clear: as there are none in Russian, the student needs to understand their role and function in English. It's a bit different with prepositions: even though there are prepositions in Russian, their number and usage in English very often cause confusion. …”
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    Article
  4. 864

    5G OFDM channel estimation method based on complex-valued generative adversarial network by LU Yuanzhi, WEI Xianglin, YU Long, YAO Changhua

    Published 2024-03-01
    “…Accurate channel estimation is a critical component in the design of 5G OFDM communication system receivers, since it can significantly reduce the bit error rate (BER), thus improving wireless communication efficiency and quality. …”
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    Article
  5. 865

    Identifying Opportunities for Exploiting Cross-Layer Interactions in Adaptive Wireless Systems by Troy Weingart, Douglas C. Sicker, Dirk Grunwald

    Published 2007-01-01
    “…This paper presents an analysis of the interaction of physical, data link, and network layer parameters with respect to throughput, bit error rate, delay, and jitter. The goal of this analysis is to identify opportunities where system designers might exploit cross-layer interactions to improve the performance of Voice over IP (VoIP), instant messaging (IM), and file transfer applications.…”
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    Article
  6. 866

    Analysis of 6G and B5G waveforms using hybrid MF-ED and ECG-ED spectrum sensing techniques by Arun Kumar, Aziz Nanthaamornphong

    Published 2025-04-01
    “…Additionally, characteristics including bit error rate (BER), power spectral density (PSD), probability of detection (pd), and probability of false alarm (pfa) were researched and evaluated for 500 and 1000 samples. …”
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    Article
  7. 867

    Channel modeling and testing of wireless transmission for underground in-pipe leak and material loss detection by S Mekid, D Wu, R Hussain, K Youcef-Toumi

    Published 2017-11-01
    “…The objective is to identify the range of operating communication frequencies having lower energy loss, lower resulting bit error rate, and the power needed to transfer packets designed to carry data through the media. …”
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    Article
  8. 868

    Wireless key generation system for internet of vehicles based on deep learning by Han WANG, Liquan CHEN, Zhongmin WANG, Tianyu LU

    Published 2024-02-01
    “…In recent years, the widespread application of internet of vehicles technology has garnered attention due to its complex nature and point-to-point communication characteristics.Critical and sensitive vehicle information is transmitted between different devices in internet of vehicles, necessitating the establishment of secure and reliable lightweight keys for encryption and decryption purposes in order to ensure communication security.Traditional key generation schemes have limitations in terms of flexibility and expandability within the vehicle network.A popular alternative is the physical layer key generation technology based on wireless channels, which offers lightweight characteristics and a theoretical basis of security in information theory.However, in the context of internet of vehicles, the movement speed of devices impacts the autocorrelation of generated keys, requiring improvements to traditional channel modeling methods.Additionally, the randomness and consistency of generated wireless keys are of higher importance in applications in internet of vehicles.This research focused on a key generation system based on the wireless physical layer, conducting channel modeling based on line-of-sight and multipath fading effects to reflect the impact of vehicle speed on autocorrelation.To enhance the randomness of key generation, a differential quantization method based on cumulative distribution function was proposed.Furthermore, an information reconciliation scheme based on neural network auto-encoder was introduced to achieve a dynamic balance between reliability and confidentiality.Compared to the implementation of Slepian-Wolf low-density parity-check codes, the proposed method reduces the bit disagreement rate by approximately 30%.…”
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  9. 869

    A Proposed Chaotic-Switched Turbo Coding Design and Its Application for Half-Duplex Relay Channel by Tamer H. M. Soliman, Fengfan Yang, S. Ejaz

    Published 2015-01-01
    “…Results of simulations of these new secure turbo coding schemes are compared to classical turbo codes with the same coding parameters and the proposed system is able to achieve secured reasonable bit error rate performance when it is made to switch between different puncturing and design configuration parameters especially with low switching rates.…”
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  10. 870

    Experimental Demonstration of Special-Shaped 32-Quadrature Amplitude Modulation Constellations for Visible Light Communications by Xinyue Guo, Shuangshuang Li, Yang Guo

    Published 2018-01-01
    “…Experimental results show that the bit error rate performance is finally decided by the value of PAPR in the VLC system due to the serious nonlinearity of the LED, where the Circular (4, 11, 17) scheme always performs best under the 7% preforward error correction threshold of 3.8 × 10−3 with 62.5Mb/s transmission data rate and 1-meter transmission distance.…”
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  11. 871

    Taiwan Automated Telescope Network by Dean-Yi Chou, Ming-Tsung Sun, Javier Fernandez Fernandez, Li-Han Wang, Antonio Jimenez, Alexander Serebryanskiy, Shuhrat Ehgamberdiev

    Published 2010-01-01
    “…The images are taken with a 16-bit 1024×1024 CCD camera. The telescope is equipped with UBVRI filters. …”
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    Article
  12. 872

    QoS Strategies for Wireless Multimedia Sensor Networks in the Context of IoT at the MAC Layer, Application Layer, and Cross-Layer Algorithms by Muwonge Ssajjabbi Bernard, Tingrui Pei, Kimbugwe Nasser

    Published 2019-01-01
    “…Quality of service (QoS) pointers like energy efficiency, reliability, bit error rate, and latency can be helpful in data collection estimation over a network. …”
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  13. 873
  14. 874

    Design and Characteristic Analysis of Multicarrier Chaotic Phase Coded Radar Pulse Train Signal by Qiongdan Huang, Yong Li, Yaoping Zeng, Yinjuan Fu

    Published 2014-01-01
    “…In addition, we analyze the influences of subcarrier number, phase-modulated bit number, and period number on the pulse train’s autocorrelation performance. …”
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    Article
  15. 875

    Evaluation of Efficacy of Artificial Intelligence in Orthopantomogram in Detecting and Classifying Radiolucent Lesions by Sheetal Singar, Ajay Parihar, Prashanthi Reddy

    Published 2023-07-01
    “…Method: Two basic CNN models were implemented on Anaconda with Python 3 on 64-bit, CNN-I for detection of radiolucency and CNN-II for classification of radiolucency into benign and malignant lesions. …”
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    Article
  16. 876

    Acoustic Echo Cancellation Embedded in Smart Transcoding Algorithm between 3GPP AMR-NB Modes by Emmanuel Rossignol Thepie Fapi, Dominique Pastor, Christophe Beaugeant, Hervé Taddei

    Published 2010-01-01
    “…The Echo Return Loss Enhancement (ERLE) can be less than 10 dB for low bit rate speech codecs. We propose in this paper a coded domain AEC integrated in a smart transcoding strategy which directly modifies the Code Excited Linear Prediction (CELP) parameters. …”
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    Article
  17. 877

    Secrecy Rate Performance Analysis of Jammer-Aided Symbiotic Radio with Sensing Errors for Fifth Generation Wireless Networks by Muhammed Yusuf Onay

    Published 2024-12-01
    “…To ensure security, the secrecy rate is defined as the difference between the number of bits transmitted to the receiver over the information channel and the number of bits reaching the eavesdropper (ED) over the wiretap channel. …”
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  18. 878

    Multichannel preamble sampling MAC protocol for wireless sensor networks by Hanan Alahmadi, Fatma Bouabdallah

    Published 2019-05-01
    “…Simulation results show that MCPS greatly improves the network performance especially in terms of throughput, waiting time, end-to-end delay, and energy per bit.…”
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  19. 879

    Cognitive Multihop Wireless Sensor Networks over Nakagami- Fading Channels by Xing Zhang, Jia Xing, Zhi Yan, Yue Gao, Wenbo Wang

    Published 2014-08-01
    “…The closed-form expressions for the exact outage probability and bit error rate (BER) of the secondary system are derived and validated by simulations. …”
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    Article
  20. 880

    Reusable attribute-based signature with attribute revocation and authenticated key agreement by ZHANG Zhishuo, YANG Huixi, HUANG Wen, LIAO Yongjian, ZHOU Shijie

    Published 2024-04-01
    “…Ultimately, theoretical comparisons and simulation experiments conducted at a 128-bit advanced encryption standard (AES) security level demonstrated that the proposed attribute-based authentication and secure communication scheme outperforms other contemporary schemes in terms of efficiency.…”
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    Article