Showing 2,281 - 2,300 results of 9,561 for search '"modulation"', query time: 0.08s Refine Results
  1. 2281

    A Review of Recent Progress in the Mechanisms and Effectiveness of Acupuncture for Treating Allergic Rhinitis by Bu F, Lou Z

    Published 2025-01-01
    “…We explore the mechanisms of acupuncture in immune regulation, neural modulation, inflammation modulation, and microbiota modulation, and assess its clinical efficacy and safety. …”
    Get full text
    Article
  2. 2282

    The effects of the ketone body ?-hydroxybutyrate on the neuronal transcriptome by Zayn Cheema, Megan Chen, Dana Poon, Taara Reddy, John Vergis, Sinead O'Donovan

    Published 2025-02-01
    “…Our results suggest that under normal conditions, BHBs primary actions include modulation of cellular neuronal immune responses. …”
    Get full text
    Article
  3. 2283
  4. 2284

    Error vector magnitude measurement and analysis in optical communication system by Junsen LAI, Xiaohua TANG, Rui TANG, Xin ZHAO, Wenyu ZHAO, Haiyi ZHANG

    Published 2016-07-01
    “…Vector modulation format of high speed optical communication system calls for new measurement and analysis scheme.Error vector magnitude (EVM) is one of the most important parameters in vector modulation evaluation.The definition of EVM parameters,its test methods and instruments were analyzed,and application of EVM related parameter in transmitter measurement and its standardization progress were also discussed.…”
    Get full text
    Article
  5. 2285
  6. 2286

    Outdoor Massive MIMO Testbed With Directional Beams: Design, Implementation, and Validation by Spandan Bisoyi, Pasupuleti Muralimohan, Harish Kumar Dureppagari, Pavan Reddy Manne, Kiran Kuchi

    Published 2025-01-01
    “…Additionally, to support higher modulation scheme we modified the correlation threshold and achieved a pairing of 4 users with 16QAM modulation, and 3 users with 64QAM modulation scheme. …”
    Get full text
    Article
  7. 2287
  8. 2288

    Research of Vibration Characteristics of Gear-rotor-bearing System with Compound Faults by Haisheng Feng, Yongqiang Xiao, Baoguo Wu, Jin Dang, Jianping Wang, Fengtao Wang

    Published 2022-07-01
    “…When compound faults of the gear-rotor-bearing system occurs,the amplitude of system vibration on the time domain increase and the vibration are becoming more complicated. The modulation phenomenon is serious on frequency domain, and the amptitude of the signal generated by modulation increases. …”
    Get full text
    Article
  9. 2289

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

    Published 2019-01-01
    “…The performance of orthogonal frequency division multiplexing- (OFDM-) based free-space optics (FSO) depends on various parameters such as number of subcarriers, base band modulation, nature of laser beam, turbulence modelling, and much more. …”
    Get full text
    Article
  10. 2290

    Application of microwave six-port in software radio by ZHANG Lan1, WANG Bing2, FENG Ke-jin1

    Published 2005-01-01
    “…Common formulas of six-port demodulation orthogonal modulation signals was educed. The results of simulation in demodulation QPSK, 16QAM, π/4QPSK modulation signals are well agreement with the theory analysis. …”
    Get full text
    Article
  11. 2291

    High-Accuracy Surface Profile Measurement Based on the Vortex Phase-Shifting Interferometry by Donge Zhao, Chaozheng Jia, Yayun Ma, Xuefeng Yang, Bin Zhang, Wenbo Chu

    Published 2021-01-01
    “…According to the principle of phase-shifting interferometry and spiral phase characteristics of the vortex beam, this article proposes a method for detecting the surface profile of a transparent object, in which the +1 order vortex beam is generated by a spatial light modulator and is taken as the reference light. The influence of the nonlinear phase modulation characteristics of the spatial light modulator on the measurement precision is studied. …”
    Get full text
    Article
  12. 2292

    Evaluation of an in situ QAM‐based Power Line Communication system for lithium‐ion batteries by Mahyar J. Koshkouei, Erik Kampert, Andrew D. Moore, Matthew D. Higgins

    Published 2022-03-01
    “…The use of advanced modulation, such as Quadrature Amplitude Modulation (QAM), is considered here. …”
    Get full text
    Article
  13. 2293

    Photoacoustic Measurement of Ethane with Near-Infrared DFB Diode Laser by Gang Cheng, Yuan Cao, Kun Liu, Gongdong Zhu, Guishi Wang, Xiaoming Gao

    Published 2018-01-01
    “…Modulation frequency and modulation amplitude were optimized for getting optimum performance. …”
    Get full text
    Article
  14. 2294

    A Four Quadrature Signals’ Generator with Precise Phase Adjustment by Xiushan Wu, Yanzhi Wang, Siguang An, Jianqiang Han, Ling Sun

    Published 2016-01-01
    “…A four-way quadrature signals generator with precise phase modulation is presented. It consists of a phase precision regulator and a frequency divider. …”
    Get full text
    Article
  15. 2295

    Transmission Performance Analysis of WDM Radio over Fiber Technology for Next Generation Long-Haul Optical Networks by Badiaa Ait Ahmed, Otman Aghzout, Mounia Chakkour, Fahd Chaoui, Azzeddin Naghar

    Published 2019-01-01
    “…In Digital RoF, the impact analysis of modulation types such as Differential Phase-Shift Keying (DPSK) and Quadrature Amplitude Modulation (QAM) is also introduced. …”
    Get full text
    Article
  16. 2296

    Paired Stimulation to Promote Lasting Augmentation of Corticospinal Circuits by Noam Y. Harel, Jason B. Carmel

    Published 2016-01-01
    “…After injury, electrical stimulation of the nervous system can augment plasticity of spared or latent circuits through focal modulation. Pairing stimulation of two parts of a spared circuit can target modulation more specifically to the intended circuit. …”
    Get full text
    Article
  17. 2297

    An OSNR Monitoring Scheme based on Mean and Variance Value of Signal Amplitude by CHEN Fang, LI Zifan, ZHU Yanyuan, LI Bozhong, LONG Han, WU Jianjun, DUAN Mingxiong

    Published 2024-12-01
    “…【Results】This monitoring scheme is used to experimentally monitor the receiver OSNR of Quadrature Phase Shift Keying (QPSK) /16 Quadrature Amplitude Modulation (QAM) /32QAM transmission systems with three different modulation formats. …”
    Get full text
    Article
  18. 2298

    Empirical Study of Far-Field Radio Frequency Wireless Power Transfer Testbed for Underground Mines Based on 1.8 GHz by Anabi Hilary Kelechi, Frimpong Samuel

    Published 2025-01-01
    “…We are specifically interested in understanding the optimal digital modulation scheme from the perspective of WPT efficiency in real-world deployment scenarios. …”
    Get full text
    Article
  19. 2299

    Survey on data transmission in Bluetooth technology by Zhi-hong QIAN, Dan LIU

    Published 2012-04-01
    “…The different impact assessments on performance of data transmission of multiple Bluetooth protocol versions were analyzed.Packet selection algorithms,retransmission mechanisms,interference and security were discussed respectively.Strategies,employing extended-golay code and minimum frequency shift keying (MSK) modulation were proposed,which enhanced the probability of anti-interference and throughput of data packet.Moreover,a co-channel interference suppression approach based on channel switching and MSK modulation was proposed,which improved the carrier to interference ratio and throughput in piconets.Finally,the work was summarized and expectations as well as premeditation of the future were presented.…”
    Get full text
    Article
  20. 2300

    Performance Analysis of Dimming Methods in Visible Light Communication Systems by Mehmet Sonmez, Süleyman Börekoğlu

    Published 2022-09-01
    “…In this sense, it has been focused on performance differences between M-ary VPPM (M-ary Variable Pulse Position Modulation) scheme and VPAPM (Variable Pulse Amplitude Position Modulation) which was proposed to ensure the multilevel transmission for VPPM scheme. …”
    Get full text
    Article