Results 21 to 30 of about 57,900 (293)
Phased-MIMO Radar: A Tradeoff Between Phased-Array and MIMO Radars [PDF]
, 2009 We propose a new technique for multiple-input multiple-output (MIMO) radar with colocated antennas which we call phased-MIMO radar. The new technique enjoys the advantages of MIMO radar without sacrificing the main advantage of phased-array radar which ...
Aboulnasr Hassanien +2 more
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Utility-Based Wireless Routing Algorithm for Massive MIMO Heterogeneous Networks
Applied Sciences, 2020 With the development of 5G communication, massive multiple input multiple output (MIMO) technology is getting more and more attention. Massive MIMO uses a large amount of simultaneous transmitting and receiving antennas to reduce power consumption and ...
Wei Zhao, Wen-Hsing Kuo
doaj +1 more source
Sensors, 2023 This paper assessed the variability of radiofrequency exposure among road users in urban settings due to vehicle-to-vehicle (V2V) communication operating at 5.9 GHz.
Gabriella Tognola +4 more
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A random walk model of wave propagation [PDF]
, 2004 This paper shows that a reasonably accurate description of propagation loss in small urban cells can be obtained with a simple stochastic model based on the theory of random walks, that accounts for only two parameters: the amount of clutter and the ...
Bruck, Jehoshua +2 more
core +1 more source
Applied Sciences, 2019 This paper presents a practical method of receiving waves having orbital angular momentum (OAM) in the far field of an antenna transmitting multiple OAM modes, each carrying a separate data stream at the same radio frequency (RF).
Marek Klemes
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IEEE Access, 2023 Indoor object localization and positioning is part of the space-awareness concept which has seen a rising popularity in recent Internet of Things (IoT) research and applications.
Amina Benouakta +3 more
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MIMO radar space–time adaptive processing using prolate spheroidal wave functions [PDF]
, 2008 In the traditional transmitting beamforming radar system, the transmitting antennas send coherent waveforms which form a highly focused beam. In the multiple-input multiple-output (MIMO) radar system, the transmitter sends noncoherent (possibly ...
Chun-yang Chen +2 more
core +2 more sources
Receiving and transmitting feed of reflector antennas for satellite communication systems
Физика волновых процессов и радиотехнические системы, 2022 The performance indicators of the antenna-feed path of a multiband reflector antenna are formulated and analyzed in the form of partial coefficients of the complex amplitude of the input signal, vectors of the polarization signal and noise in the input ...
Dmitry D. Gabriel’ean +3 more
doaj +1 more source
Oversampling transmit and receive antenna arrays [PDF]
2010 IEEE International Conference on Acoustics, Speech and Signal Processing, 2010 A dense antenna array architecture is developed to ease the circuit requirements of the radio frequency (RF) front-end in beamforming applications. In the architecture, antennas are spaced more closely than would otherwise be required to exploit the available degrees of freedom.
Wornell, Gregory W. +2 more
openaire +1 more source
A Method for Performance Enhancement for Aeronautical Telemetry Radio Link Using Alamouti Code [PDF]
فصلنامه علوم و فناوری فضایی, 2011 In the most aeronautical telemetry systems, at least two antennas are used to transmit radio signals towards receiver antenna. It is due to effect of large metallic fuselage of air vehicles in cutoff radio link between transmitter and receiver antenna ...
Sh. Marzban, K. Mohamed-Pour
doaj