Results 21 to 30 of about 14,789 (193)
Research on a method of center of spreading spectrum testing deception jamming
Dianzi Jishu Yingyong, 2021 According to the problem of performance reduction even losing lock for the MIMO system threatened by deception jamming with pseudo-command, this paper presents a technology can test the deception jamming based on central part of spreading spectrum.
An Qiaojing +5 more
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Subarray 4×4 untuk Antena MIMO 5G dengan Elemen yang Menerapkan Teknik Parasitic
Jurnal Nasional Teknik Elektro dan Teknologi Informasi, 2023 Multiple-input multiple-output (MIMO) merupakan sistem komunikasi nirkabel yang menggunakan banyak antena di sisi pemancar maupun penerima. Sistem ini dapat meningkatkan kualitas komunikasi nirkabel pada jaringan teknologi 5G.
Fitri Amillia +2 more
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Study of P-350 cement setting kinetic by nuclear magnetic resonance
Materiales de Construccion, 1993 A kinetic study of cement setting process is presented in this paper A new method which allows the microscopic research of the evolution of the cement hydration applied to the study of three P-350 cuban cements is used.
Gabriel L. Duque Fernández +3 more
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A Compact Band-Notched UWB MIMO Antenna with Enhanced Isolation Using Comb Shaped Decoupling Element [PDF]
Radioengineering, 2023 A compact 37mm × 26 mm two element multiple-input-multiple-output (MIMO) antenna is presented for ultra wide band (UWB) system application with band notched characteristics.
S. Chatterjee, S. Rana, R. Sanyal
doaj
Machine-Learning-Aided Massive Hybrid Analog and Digital MIMO DOA Estimation for Future Wireless Networks [PDF]
Radioengineering, 2023 Due to a high spatial angle resolution and low circuit cost of massive hybrid analog and digital (HAD) multiple-input multiple-output (MIMO), it is viewed as a valuable green communication technology for future wireless networks.
X. Zhao +11 more
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Non-Uniform Constellations for Polarization Division Multiplexed CO-OFDM Systems [PDF]
Radioengineering, 2021 In this paper we propose a~transmission scheme for Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) systems with Multiple Input - Multiple Output (MIMO) processing.
D. Perez-Calderon +3 more
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2012 IEEE Global Communications Conference (GLOBECOM), 2012 In a generic switching problem, a switching pattern consists of a one-to-one mapping from a set of inputs to a set of outputs (i.e., a permutation). We propose and investigate a wireless switching framework in which a multi-antenna relay is responsible for switching traffic among a set of $N$ stations. We refer to such a relay as a MIMO switch.
Fanggang Wang 0001, Soung Chang Liew
openaire +2 more sources
Time-Varying Kelvin Wake Model and Microwave Velocity Observation
Sensors, 2020 In the synthetic aperture radar (SAR) imaging of ship-induced wakes, it is difficult to obtain the Doppler velocity of a Kelvin wake due to the lack of time-varying wake models and suitable radar equipment.
Jie Niu, Xingdong Liang, Xin Zhang
doaj +1 more source
IEEE Signal Processing Magazine, 2008 Radio regulatory bodies are recognizing that the rigid spectrum assignment granting exclusive use to licensed services is highly inefficient, due to the high variability of the traffic statistics across time, space, and frequency. Recent Federal Communications Commission (FCC) measurements show that, in fact, the spectrum usage is typically ...
Gesualdo Scutari +2 more
openaire +3 more sources