Results 31 to 40 of about 47,365 (251)
IEEE Access, 2019 In this study, analytical expressions are derived by using probability density function approach over millimeter wave fluctuating two-ray (FTR) fading channels for average symbol error rate (ASER) of rectangular quadrature amplitude modulation (RQAM) and
Mehmet Bilim, Nuri Kapucu
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Iterative Multiuser Minimum Symbol Error Rate Beamforming Aided QAM Receiver
, 2008 A novel iterative soft interference cancellation (SIC) aided beamforming receiver is developed for high-throughput quadrature amplitude modulation systems.
Chen, Sheng, Hanzo, L., Tan, S.
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Short-range ultrasonic communications in air using quadrature modulation [PDF]
, 2009 A study has been undertaken of ultrasonic communications methods in air, using a quadrature modulation method. Simulations were first performed to establish the likely performance of quadrature phase shift keying over the limited bandwidth available in ...
Green, Roger, Hutchins, David A., Li, C.
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A Survey of Interlayer Interaction Models for Graphene and Other 2D Materials
Advanced Materials Interfaces, EarlyView.Van der Waals interactions arising from electronic polarization at atomically close interfaces generate corrugated interlayer energy landscapes that govern normal and tangential tractions. This review presents an overview of quantum, atomistic, analytical, and continuum modeling approaches, highlighting their roles across length scales in capturing ...
Gourav Yadav +2 more
wiley +1 more source
Upper-Bound Performance of a Wide-Band Adaptive Modem
, 1999 Adaptive modulation is applied in conjunction with a decision-feedback equalizer (DFE) in order to mitigate the effects of the slowly varying wide-band multipath Rayleigh fading channel in a noise-limited environment.
Hanzo, L., Wong, C.H.
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Advanced Science, EarlyView.A metasurface‐enabled ultrasonic platform achieves precise multi‐focal control through biological barriers, real‐time physiology‐driven modulation, and simultaneous wireless power and data transmission. By unifying wavefront engineering, closed‐loop feedback, and acoustic communication, this work establishes key enabling technologies toward scalable ...
Chuanxin Zhang +3 more
wiley +1 more source
Demodulation system Patent [PDF]
, 1969 Development of demodulation system for removing amplitude modulation from two quadrature displaced data bearing ...
Dix, M. G., Kerwin, W. J., Munoz, R. M.
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Multi-user Communication in Difficult Interference
, 2019 The co-channel interference (CCI) is one of the major impairments in wireless communication. CCI typically reduces the reliability of wireless communication links, but the difficult CCI which is no more or less strong to the desired signals destroys ...
Basnayaka, Dushyantha A. +1 more
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Advanced Intelligent Systems, EarlyView.A piezoelectric meta‐transducer generates an ultrasonic rainbow, steering guided elastic waves to different angles according to frequency. A dithering‐based binary electrode design enables a closer realization of the target wavenumber filter, improving directional purity and suppressing unwanted lobes. Numerical and experimental validation demonstrates
Masoud Mohammadgholiha +5 more
wiley +1 more source
Performance Analysis of MIMO-FSO System based on Quadrature Amplitude Modulation
Guangtongxin yanjiu, 2023 Free Space Optical (FSO) communication systems are easily affected by atmospheric turbulence effects. In order to reduce the Bit Error Rate (BER) of the system under saturated turbulence condition, and considering the requirement of maximum diversity ...
LI Pu, TANG Xuan, XU Jing, CHEN Yang
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