Results 11 to 20 of about 2,740 (261)
Millimeter-Wave Channel Model Parameters for Various Office Environments
IEEE Access, 2022 This paper developed a 60-GHz millimeter-wave cluster channel model for various office environments and investigated the impact of cluster characteristics on wireless data transmission.
Hibiki Tsukada +3 more
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System Design and Calibration for Wideband Channel Sounding With Multiple Frequency Bands
IEEE Access, 2017 This paper presents a multiple frequency bands-switching scheme for wideband channel sounding, which is able to extend the overall sounding bandwidth without changing operation bandwidth of the hardware.
Jinxing li +3 more
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Deep convective clouds at the tropopause [PDF]
Atmospheric Chemistry and Physics, 2011 Data from the Atmospheric Infrared Sounder (AIRS) on the EOS Aqua spacecraft each day show tens of thousands of Cold Clouds (CC) in the tropical oceans with 10 μm window channel brightness temperatures colder than 225 K.
H. H. Aumann +2 more
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Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels
The Scientific World Journal, 2014 The IEEE 802.11ac wireless local area network (WLAN) standard has adopted beamforming (BF) schemes to improve spectral efficiency and throughput with multiple antennas.
Heejung Yu, Taejoon Kim
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Design and technical characteristics of a three-channel mobile lidar for atmospheric gas analysis [PDF]
E3S Web of ConferencesThe technical appearance of the developed three-channel mobile IR-band lidar system is presented. The output energy characteristics of the lidar channels for H2O, CO2, CH4 sounding were experimentally determined and the signals were registered on ...
Yakovlev Semyon +4 more
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Directionally Resolved Measurement and Modeling of THz Band Propagation Channels
IEEE Open Journal of Antennas and Propagation, 2022 Design and assessment of THz communications systems, which will form an essential part of 6G, require an understanding of the propagation channels the systems will operate in.
Jorge Gomez-Ponce +4 more
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Uncertainty Analysis Methodology for Measurements of Dynamic Millimeter-Wave Channels
IEEE Open Journal of Antennas and Propagation, 2023 Quantification of uncertainties in the results of channel sounding measurements is important for their interpretation and further usage. In this paper, a novel uncertainty analysis methodology to quantify uncertainties of condensed parameters in ...
Robbert Schulpen +3 more
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AIP Advances, 2018 The plasma sheath-surrounded hypersonic vehicle is a dynamic and time-varying medium and it is almost impossible to calculate time-varying physical parameters directly.
Lei Shi +5 more
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Evaluation of OFDM Channel Sounding Techniques with Three Modulation Sequences
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2019 This paper presents an evaluation of multicarrier channel sounding techniques using different random and pseudo-random sequences to modulate the OFDM sounding signal.
Marcelo Molina Silva +6 more
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Archives of Acoustics, 2019 In this paper, we present the methods to detect the channel delay profile and the Doppler spectrum of shallow underwater acoustic channels (SUAC). In our channel sounding methods, a short impulse in form of a sinusoid function is successively sent out ...
Van Duc NGUYEN +2 more
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