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Real-time Experimental Wireless Testbed with Digital Beamforming at 300 GHz
European Conference on Networks and Communications, 2020Antenna arrays implementing beamforming are required in Terahertz (THz) communications to combat the very high propagation losses. In this paper, real-time THz wireless transmission with beamforming at a carrier frequency of 300 GHz is demonstrated for ...
Georgia D. Ntouni +6 more
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Resolution enhancement of digital beamformers
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1984Large array extent is usually required in order to adequately enhance the resolution of a beamformer and to improve its beam pattern. Due to physical constraints this requirement may not be met. This paper presents the results of an analytical and experimental study in the use of a signal extrapolation method to enhance the beamformer resolution for ...
null Hong Fan, E. El-Masry, W. Jenkins
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Digital Beamforming-Based Massive MIMO Transceiver for 5G Millimeter-Wave Communications
IEEE transactions on microwave theory and techniques, 2018A 64-channel massive multiple-input multiple-output (MIMO) transceiver with a fully digital beamforming (DBF) architecture for fifth-generation millimeter-wave communications is presented in this paper.
Binqi Yang +5 more
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Digital Beamforming - A Retrospective
2019 IEEE International Symposium on Phased Array System & Technology (PAST), 2019This paper summarizes the development of digital beamforming from its inception through today and provides some insights into its future. It highlights the contributions of Dr. Hans Steyskal in the early stages of digital beamforming development for radar applications.
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A Family of Hybrid Analog–Digital Beamforming Methods for Massive MIMO Systems
IEEE Transactions on Signal Processing, 2019In massive MIMO systems, hybrid beamforming is an essential technique for exploiting the potential array gain without using a dedicated RF chain for each antenna.
Shahar Stein Ioushua, Yonina C. Eldar
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Digital beamforming using a GPU
2009 IEEE International Conference on Acoustics, Speech and Signal Processing, 2009In this paper we investigate the use of GPUs as digital beamformers. We specify a parallel implementation of a beamformer in time and frequency domain and measure its performance. We also give examples of the processing limits of NVIDIA Geforce 8800 GPU with respect to application parameters: number of sensors, sampling frequency, bandwidth, and number
Carl-Inge Colombo Nilsen, Ines Hafizovic
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Postfiltering in Digital Beamformers
IEEE Transactions on Aerospace and Electronic Systems, 1976Assuming a sinusoidal signal superimposed on a narrow-band Gaussian noise as the input to a receiving array, the output power and signal-to-noise ratio of a digital beamformer with postfiltering were formulated so that subsequent calculations could be made without an analysis in the frequency domain.
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An experimental digital beamforming array
1988 IEEE AP-S. International Symposium, Antennas and Propagation, 2003A digital beamforming (DBF) array was fabricated and tested using commercially available parts to demonstrate beam agility and reconfigurability. The antenna portion of the DBF system consists of a 2*4 array of microstrip patch elements. The patch radiators are corner-fed square elements with a diagonal slot for circular polarization designed at 2.95 ...
D.C.D. Chang, W.N. Klimczak, G.C. Busche
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Digital beamforming receiver technology
International Symposium on Antennas and Propagation Society, Merging Technologies for the 90's, 1990A recent digital beamforming (DBF) receiver module effort is described. Each individual receiver module is divided into four mechanical packages. The element submodule is in stripline and contains the radiating element, C-band filtering, and calibration signal coupling functions.
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Unified Feedback Beamforming Digital Predistorter
2019 49th European Microwave Conference (EuMC), 2019A novel digital predistortion (DPD) architecture for amplitude- and phase- weighted beamforming (BF) transmitter is proposed. Based on the analysis of BF nonlinear radiation characteristics over-the-air, the proposed DPD with a simple unified feedback circuit can reduce nonlinear radiation in every direction.
Suguru Habu +2 more
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