Showing 301 - 320 results of 369 for search '"wireless communications"', query time: 0.06s Refine Results
  1. 301

    Ultrasmall Dual-Band Metamaterial Antennas Based on Asymmetrical Hybrid Resonators by Ji-Xu Zhu, Peng Bai, Jia-Fu Wang

    Published 2016-01-01
    “…Excellent performances of the antennas based on hybrid resonators predict promising applications in multifunction wireless communication systems.…”
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    Article
  2. 302

    PhysioDroid: Combining Wearable Health Sensors and Mobile Devices for a Ubiquitous, Continuous, and Personal Monitoring by Oresti Banos, Claudia Villalonga, Miguel Damas, Peter Gloesekoetter, Hector Pomares, Ignacio Rojas

    Published 2014-01-01
    “…Technological advances on the development of mobile devices, medical sensors, and wireless communication systems support a new generation of unobtrusive, portable, and ubiquitous health monitoring systems for continuous patient assessment and more personalized health care. …”
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    Article
  3. 303

    Design and Implementation of a Healthcare Monitoring System Based on LoRa by Hayder Fadhil Jawad, Ali Al-Askery, Adnan Hussein Ali

    Published 2022-12-01
    “…This instrument uses ESP32 as a Microcontroller and LoRa as a wireless communication technique. The MLX90614 sensor is used to detect body temperature, while the MAX30100 sensor is used to monitor blood oxygen saturation and heart rate. …”
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    Article
  4. 304

    Modeling and Analysis on Minimum Safe Distance for Platooning Vehicles Based on Field Test of Communication Delay by Mengyan Hu, Xiangmo Zhao, Fei Hui, Bin Tian, Zhigang Xu, Xinrui Zhang

    Published 2021-01-01
    “…It is more critical when the wireless communication got delays. Therefore, “how to predefine a minimum safe distance (MSD) considering communication delay” is a challenging issue. …”
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    Article
  5. 305

    Determination of an Indoor Target Position: An Accurate and Adaptable Approach Based on Differential Positioning by Siye Wang, Chang Ding, Weiqing Huang, Yanfang Zhang, Jianguo Jiang, Shaoyi Zhu, Yue Cui, Jun-yu Lin

    Published 2019-01-01
    “…Researchers are actively pursuing algorithmic improvements to eliminate errors introduced from complex interference factors present in indoor, wireless communication environments. In this work, we adopt a differential signal strength method in the design of our new indoor localization algorithm. …”
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    Article
  6. 306

    Metasurface-enabled multifunctional single-frequency sensors without external power by Masaya Tashiro, Kosuke Ide, Kosei Asano, Satoshi Ishii, Yuta Sugiura, Akira Uchiyama, Hiroki Wakatsuchi

    Published 2024-10-01
    “…Our study affords new opportunities for sensing multiple physical properties without relying on an external power source or requiring multiple frequencies, which markedly simplifies and facilitates the design of next-generation wireless communication systems.…”
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    Article
  7. 307

    Spectral efficiency and secrecy enhancing scheme for IRS-aided SWIPT systems by Jianfeng Xu, Pingping Shang

    Published 2025-01-01
    “…Abstract Simultaneous wireless information and power transfer (SWIPT) has emerged as a promising technology for enabling efficient and scalable wireless communication within large-scale Internet of Things (IoT) networks. …”
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    Article
  8. 308

    A Novel Linear Sparse Array with Reconfigurable Pixel Antenna Elements by Ming Li, Haiping Wei, Jiahao Zhao, Qingchang Tao, Zheng You

    Published 2020-01-01
    “…The measured results agree well with the simulated ones, which indicates the application potential in the field of modern wireless communication system of the proposed linear sparse array.…”
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    Article
  9. 309

    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
    “…The rapid evolution of wireless communication has necessitated advanced waveform analysis for beyond-fifth-generation (B5G) and sixth-generation (6G) radio networks, focusing on efficient spectrum utilization. …”
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    Article
  10. 310

    Thermal-Aware Multiconstrained Intrabody QoS Routing for Wireless Body Area Networks by Muhammad Mostafa Monowar, Mohammad Mehedi Hassan, Fuad Bajaber, Md. Abdul Hamid, Atif Alamri

    Published 2014-03-01
    “…However, implanted biosensors could cause thermal damages on human tissue as it exhibits temperature rise due to wireless communication and processing tasks inside the human body. …”
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    Article
  11. 311

    A New Physical Layer Security Scheme Based on Adaptive Bit Channel Selection for Polar-Coded OFDM by Yuki Kuraya, Hideki Ochiai

    Published 2024-01-01
    “…We propose a new physical layer security scheme for a wiretap channel in polar-coded OFDM-based wireless communication systems. Our approach is based on the <italic>adaptive bit channel selection</italic>, where the input bit channels of polar code are selected according to the frequency selectivity of the main channel. …”
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    Article
  12. 312

    Monitoring System for Circular Deformation in Metro Shield Tunnels in Soft Soils by Jinfeng Zhang, Ming Zhao

    Published 2020-01-01
    “…The rotation of segments was measured using MEMS inclinometers, and the data were transmitted using ZigBee and general packet radio service (GPRS) wireless communication technology. Results show that the proposed system could be implemented to improve transportation safety in relevant situations and similar conditions.…”
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    Article
  13. 313

    A Novel User Selection Strategy with Incentive Mechanism Based on Time Window in Mobile Crowdsensing by Xuemei Sun, Xiaorong Yang, Caiyun Wang, Jiaxin Wang

    Published 2020-01-01
    “…With the rapid development of smart phones and wireless communication, mobile sensing has become an efficient environmental data acquisition method capable of accomplishing large-scale and highly complex sensing tasks. …”
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    Article
  14. 314

    Testbed Configuration for Minimizing PAPR in GFDM Systems Through a Novel Companding Approach by Sowbhagya Appalla, Siva Prasad Valluri, K. N. G. B. Yaswanth, Kishore Vejandla, Chakravarthy Gunturu, Gundla Jagapathi, Nittala Noel Anurag Prashanth, A. V. Prabu

    Published 2025-01-01
    “…Generalized frequency division multiplexing (GFDM) has emerged as a quintessential waveform candidate poised to meet the stringent requirements of next-generation wireless communication frameworks, addressing pivotal 5G physical layer challenges through its flexible, adaptive structure and spectral efficiency. …”
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    Article
  15. 315

    Research on wireless monitoring system for internal temperature field of coal gangue mountain by Xiaofei Liu, Chunhao Liang, Jifa Qian, Xiaolin Li, Xuemei Li, Baoli Li, Guang Xu, Bin Zhou

    Published 2025-02-01
    “…Therefore, to mitigate the risk of spontaneous combustion resulting from the long-term accumulation of coal gangue, a monitoring system based on LoRa wireless communication technology is proposed to collect and monitor the internal temperature of coal gangue mountains in real time. …”
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    Article
  16. 316

    One-Bit Distributed Sparse Spectrum Sensing Based on the DQA-ZA-LMS and DQA-RZA-LMS Algorithms Over Adaptive Networks by Ehsan Mostafapour, Changiz Ghobadi, Javad Nourinia, Ramin Borjali Navesi

    Published 2024-01-01
    “…The sparsity aware feature of the proposed algorithm can help the network to track and estimate sparse random vectors that are shown to be the case with the spectrum of the new generation wireless communication systems such as 4G, 5G, 6G, and beyond. …”
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    Article
  17. 317

    Advancing Environmental Sustainability: A Comprehensive Review of Waste-Based Composite Materials for Efficient Electromagnetic Shielding and Absorption by Mohamed Ouda, Ala A. Abu Sanad, Aparna Krishna, Munther Issa Kandah, Jamal Kurdi

    Published 2025-01-01
    “…The surge in electronic devices and wireless communication technologies has increased the demand for effective electromagnetic interference (EMI) shielding and microwave-absorbing materials. …”
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    Article
  18. 318

    A multi-band dual-layer encoded microwave absorber with angle selectivity by Senfeng Lai, Jingyi Luo, Junxian Tan, Huiyuan Fu

    Published 2025-03-01
    “…To meet the pressing demands of modern wireless communication systems for controllable, angle-selective, transparent, and multi-band microwave absorbers, the designed absorber consists of upper and lower transparent coded structures with an intermediate air layer.Further analysis of the absorber’s operating principle revealed that under normal incidence conditions, the absorber exhibits four resonant peaks at 13.1 GHz, 25.0 GHz, 33.5 GHz, and 35.6 GHz, with absorption rates exceeding 99.8 %.Ultimately, we fabricated samples and measured their absorption performance within the frequency range of 0–26 GHz under experimental conditions. …”
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  19. 319

    A guidance to intelligent metamaterials and metamaterials intelligence by Chao Qian, Ido Kaminer, Hongsheng Chen

    Published 2025-01-01
    “…Owning to the strong nonlinear fitting and generalization ability, artificial intelligence is poised to serve as a materials-savvy surrogate electromagnetic simulator and a high-speed computing nucleus that drives numerous self-driving metamaterial applications, such as invisibility cloak, imaging, detection, and wireless communication. In turn, metamaterials create a versatile electromagnetic manipulator for wave-based analogue computing to be complementary with conventional electronic computing. …”
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    Article
  20. 320

    Analysis on Hover Control Performance of T- and Cross-Shaped Tail Fin of X-Wing Single-Bar Biplane Flapping Wing by Pingxia Zhang, Junru Zhu, Yongqiang Zhu

    Published 2020-01-01
    “…The MPU6050 electronic gyroscope was used to monitor the drone’s posture in real time, and the Bluetooth BLE4.0 wireless communication module was used to receive remote control instructions. …”
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    Article