beamforming

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beamforming

Beamforming directs the signals on transmitters and receivers with multiple antennas to improve transmission speed. It is accomplished by detecting the signals and sending feedback to the transmitter to adjust the phase and amplitude of the signals at its antennas. Starting with the 802.11ac version of Wi-Fi, beamforming was standardized for vendor interoperability (see 802.11ac).

Beamforming can also work with devices that only receive and do not transmit. For example, certain hearing aids can be configured to emphasize sound coming directly in front or from the left or right. See MIMO and antenna diversity.


Bouncing Signals
In this WiGig example, beamforming bounces signals from the router (red arrow) off the wall to the laptop (see WiGig and WirelessHD). (Image courtesy of the Wi-Fi Alliance.)
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References in periodicals archive ?
Traditional test setups, especially for 5G power amplifiers and beamformer integrated circuit design, verification and production, are complex and can introduce a wide range of sources for potential errors.
Keysight launches software to characterize modulation distortion in active devices
AAC's 5G mmWave device incorporates Anokiwave's mmWave Core integrated circuits (ICs) to address demanding 5G technical requirements in a small form-factor by leveraging energy- efficient mmWave beamformer integrated circuits.
KEYSIGHT ENABLES AAC'S INTRODUCTION OF 5G SOLUTIONS
For the image reconstruction of backscattered energy, the two-dimensional space-time beamformer algorithm "Delay and Sum" (DAS) was implemented.
Microwave Non-invasive Temperature Monitoring Using UWB Radar for Cancer Treatment by Hyperthermia
Sandu, "A digital control mechanism for the delay of a dual-microphone analog beamformer", 2017 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) & 2017 Intl Aegean Conference on Electrical Machines and Power Electronics (ACEMP), ISBN 978-1-5090-4489-4, 2017.
A Programmable Biopotential Aquisition Front-end with a Resistance-free Current-balancing Instrumentation Amplifier
Using BESA Research 5.3, cortical networks were imaged through an extension of the linearly constrained minimum variance vector beamformer [48-50], which employs spatial filters in the frequency domain to calculate source power for the entire brain volume.
Neuromagnetic Beta-Band Oscillations during Motor Imitation in Youth with Autism
The space processing based on an antenna array, such as power inversion technology and space-only MPDR (S-MPDR) beamformer, can nullify wideband interferences (WBI) and narrowband interferences (NBI) regardless of their time and frequency characteristics [7].
Space-Time-Frequency Adaptive Processor for Multiple Interference Suppression in GNSS Applications
For example, a LUT-based PR is proposed in [13] as part of an adaptive beamformer and in [5] to obtain a dynamic angular resolution of their acoustic beamforming.
Exploiting Partial Reconfiguration through PCIe for a Microphone Array Network Emulator
Jones, "Channel-ranked beamformer for the early detection of breast cancer," Progress in Electromagnetics Research, vol.
Recent Advances in Microwave Imaging for Breast Cancer Detection
Nevertheless, due to coupling range and angle peaks in the beamformer output, FDA antenna cannot estimate the range and angle of a target solely.
Frequency Diverse Array Antennas: From Their Origin to Their Application in Wireless Communication Systems
The beamformer mainly aims to let the signal of interest be received without any distortion while minimizing the noise arriving from other directions.
Open-Lake Experimental Investigation of Azimuth Angle Estimation Using a Single Acoustic Vector Sensor
The current-density reconstruction was performed using RENS beamformer, proposed in [20, 21].
Signal Space Separation Method for a Biomagnetic Sensor Array Arranged on a Flat Plane for Magnetocardiographic Applications: A Computer Simulation Study

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