Showing 21 - 40 results of 67 for search '"Shift key"', query time: 0.08s Refine Results
  1. 21

    Blind estimation of MPSK carrier frequency by DENG Zhen-miao, LIU Yu

    Published 2007-01-01
    Subjects: “…multi-phase shift keying…”
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    Article
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  10. 30

    Research on Code-Division Multiple-Access of DS-SS/EBPSK Modulation by Peng Zhang, Lenan Wu

    Published 2015-01-01
    Subjects: “…extended binary phase shift keying…”
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    Article
  11. 31

    Performance Analysis of DE-QPSK with Joint Transmit and Receive Diversity in Nakagami Fading by Guangqiu Li, Jiayun Dong

    Published 2015-08-01
    Subjects: “…differentially encoded quadric-phase shift keying…”
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    Article
  12. 32

    Performance of Coherent Optical MPSK in Underwater Turbulent Channels With Phase Errors by Jiashun Hu, Yuexiang Wu, Sunan Wang, Weiqiang Wu, Zaichen Zhang

    Published 2025-01-01
    Subjects: “…<named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <named-content content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX">$M$</tex-math> </inline-formula> </named-content> </named-content>-ary phase shift keying (MPSK)…”
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    Article
  13. 33

    Towards a Standard Benchmarking Framework for Domain Adaptation in Intelligent Fault Diagnosis by Mohammed M. Farag

    Published 2025-01-01
    “…Our framework incorporates domain shift key factors such as operating conditions (OCs) and fault levels (FLs) into dataset partitioning, labeling, and evaluation phases. …”
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    Article
  14. 34

    Novel Chaos Secure Communication System Based on Walsh Code by Gang Zhang, Niting Cui, Tianqi Zhang

    Published 2015-01-01
    “…A multiuser communication scheme which is a hybrid of Walsh code with DCSK and CDSK is proposed to improve low data transmission rate of Differential Chaos Shift Keying (DCSK), poor bit error ratio (BER) performance of Correlation Delay Shift Keying (CDSK), and disadvantage of orthogonality in traditional multiuser DCSK. …”
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    Article
  15. 35

    PSWF signal based continuous phase modulation and its spectrum performance analysis by Dawei YANG, Chuanhui LIU, Jiafang KANG

    Published 2020-11-01
    “…Prolate spheroidal wave function (PSWF) signals are the best energy-gathering signals in the time-frequency domain,here is an exploratory application of PSWF signals to continuous phase modulation technology.Firstly,the process of generating CPM modulated signals based on PSWF signals was described.Secondly,a calculation method for the power spectral density of CPM modulated signals based on PSWF using the autocorrelation function method was given.Finally,combined with numerical calculation and analysis,the power spectral density and signal occupied bandwidth characteristics of minimum frequency shift keying,sinusoidal frequency shift keying,Gaussian filtered minimum shift keying and CPM modulation signal based on Gaussian function were compared.Numerical calculation results show that the PSWF signal can obtain CPM modulation signal with better spectral performance and energy concentration,compared with rectangular pulse,raised cosine pulse,Gaussian pulse and Gauss-like pulse as the baseband frequency modulation signal of CPM.…”
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    Article
  16. 36

    Design and Performance Analysis of MISO-SRMR-DCSK System over Rayleigh Fading Channels by Gang Zhang, Yi man Hao, Tian qi Zhang

    Published 2018-01-01
    “…The major drawback of the differential chaos shift keying (DCSK) system is that equal time and energy are spent on the reference and data signal. …”
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    Article
  17. 37

    Effects of phase noise on subcarrier modulation performance over Malaga turbulence channel by Xizheng KE, Chenhao WANG, Dan CHEN

    Published 2018-11-01
    “…The performance of wireless optical system employing subcarrier phase-shift keying modulation was researched,which was influenced by phase noise of system demodulator under on Malaga atmospheric turbulence channel.Combined Fourier series and MeijerG function properties,the probability density function of instantaneous signal to noise ratio in the Malaga turbulence model was got.The Fourier series of receiving signal phase and the closed form expression of symbol error probability were derived,which were in the wireless optical subcarrier shift keying modulation system.Under different modulation order and light intensity fluctuation variance,the influence of phase noise on the system symbol error rate was analyzed.The numeric results present that the system symbol error rate increases with the light intensity fluctuation variance when the phase noise is lower.When the phase noise is larger,the influence of modulation order is greater than of turbulence intensity to the error-rate floor appearing.And with the increasing of modulation order,the corresponding average signal to noise is lower when symbol error-rate floor appears.…”
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    Article
  18. 38

    Energy-Model-Based Optimal Communication Systems Design for Wireless Sensor Networks by Ye Li, Dengyu Qiao, Zhao Xu, Da Xu, Fen Miao, Yuwei Zhang

    Published 2012-12-01
    “…According to the applications, we analyze four types of RF architectures: on-off keying (OOK) transceiver, phase-shift keying (PSK) transceiver, quadrature amplitude modulation (QAM) transceiver, and frequency-shift keying (FSK) transceiver which are widely used in WSN and establish the related energy models for each kind of architecture, respectively. …”
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    Article
  19. 39

    Analysis and Design of an Energy Efficient Differential Coherent Chaos Based System in Additive White Gaussian Noise Environment by Nizar Al Bassam, Oday D. Jerew

    Published 2017-01-01
    “…Moreover, the BER of DCOOK scheme is compared with the standard chaos systems: Chaos ON-OFF Keying (COOK), Differential Chaos Shift Keying (DCSK), and Correlation Delay Shift Keying (CDSK). …”
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    Article
  20. 40

    Evaluation of Selected Modulation Techniques in Underwater Multipath Channel by Agnieszka Czapiewska, Andrzej Luksza, Ryszard Studanski, Lukasz Wojewodka, Andrzej Zak

    Published 2025-01-01
    “…The modulation techniques mentioned are compared with MBFSK (Multiple Binary Frequency Shift Keying) modulation used in underwater wireless communication systems, which is said to be very resistant to the multipath effect. …”
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    Article