F. AhmadG.J. FrazerS.A. KassamM.G. AminIEEEInternational Conference on Acoustics, Speech, and Signal ProcessingS. Kassam, F. Ahmad, G. Frazer, and M. Amin, "A new approach for near- field wideband synthetic aperture beamforming," in Proc. IEEE ICASSP, Hong Kong, Apr. 2003, pp. ...
This paper presents a new method of designing a beamformer having a desired nearfield broadband beampattern. The methodology uses the spherical harmonic solution to the wave equation to transform the desired nearfield beampattern to an equivalent farfield beampattern. A farfield beamformer is then...
91Low-Complexity Precoding for Extremely Large-Scale MIMO Over Non-Stationary ChannelsXu, Bokai, etal. 92Multi-Beam Design for Extremely Large-Scale RIS Aided Near-Field Wireless CommunicationsLinglong Dai, etal. 93Active RISs: Signal modeling, asymptotic analysis, and beamforming designLinglong Dai,...
Antennas that can operate across multiple communication standards have remained a challenge. To address these limitations, we propose a Field-Programmable Radio Frequency Surface (FPRFS), which is based on manipulating current flow on its surface to achi
By using the maximum likelihood estimation, surface current distribution on a metal surface is estimated from magnetic fields measured near the metal surface. As a model source for the magnetic field, the authors made a metallic enclosure of a shape of rectangular paral-lelepiped with a narrow sl...
We introduce hard, s-level control in the execution for the real-time scheduling of radio resources among the User latency of codelets through a novel eBPF bytecode patching Equipments (UEs). The layers are distributed among three mechanism that preempts a codelet that exceeds a certain run- ...
Several techniques such as near-field acoustical holography1–3 (NAH) and beamforming4,5 have been developed to achieve spatial sound field visualization. With good low-frequency resolution and reconstruction performance, NAH has found wide applications in the fields of noise source identification. In...
Beamforming, energy harvesting, adaptive systems, integration with 5G/6G, integration with renewable energy and beamforming 4. Applications of wireless power transfer for sustainability WPT holds significant potential for driving sustainability initiatives. It represents a versatile and innovative approach to...
To further illustrate the anomalous transmission effects, Fig.4fpresents the simulated near-field spatial distributions of theE-field intensities on theyoz-plane at 3.5 GHz when the RIS is controlled by the five coding sequences. It is clearly observed that the plane waves propagate along the ...
(with ∑ l π l = 1 ). the sector controllers perform linear precoding, where precoding vectors for beamforming are taken (as for example in lte) from a fixed n -element codebook c n : = u 1 , … , u n which is publicly known. in the following, we identify a beamforming ...