Results 81 to 90 of about 2,907 (204)

CLEAR Interference Cancellation in a Wideband Dual‐Channel Receiver for Independent Satellite Multi‐Connectivity Links

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT In this paper, the correlation learning estimation and adaptive reduction (CLEAR) of interference, an adaptive, blind and transparent interference compensation method applied in a wideband dual‐channel receiver, is studied for a pair of independent satellite multi‐connectivity links, using the same carrier frequency and signal bandwidth in use
Svilen Dimitrov
wiley   +1 more source

Hybrid Digital-Analog Beamforming and MIMO Radar with OTFS Modulation

CoRR, 2020
Submitted to Journal of Selected Topics in Signal Processing.
Lorenzo Gaudio, Mari Kobayashi, Giuseppe Caire, Giulio Colavolpe   +3 more
openaire   +2 more sources

Intra-Beam Interference Mitigation for the Downlink Transmission of the RIS-Assisted Hybrid Millimeter Wave System

Entropy
Millimeter-wave (mmWave) communication systems leverage the directional beamforming capabilities of antenna arrays equipped at the base stations (BS) to counteract the inherent high propagation path loss characteristic of mmWave channels.
Lou Zhao, Yuliang Zhang, Minjie Zhang, Chunshan Liu   +3 more
doaj   +1 more source

Multiple Scattering Suppression in Heterogeneous Media: High‐Precision Imaging of Sleeve Grouting Defects Based on Elastic Reverse Time Migration

Engineering Reports, Volume 8, Issue 6, June 2026.
This study proposes an elastic wave reverse time migration (RTM) method to suppress multiple scattering noise in heterogeneous concrete. By effectively utilizing scattered wavefields, RTM enables high‐precision, robust imaging of sleeve grouting defects in prefabricated buildings, significantly outperforming traditional algorithms.
Yong Lu, Li Tian, Sheng Yuan, Jing Zhang
wiley   +1 more source

Multiuser Downlink Hybrid Analog-Digital Beamforming with Individual SINR Constraints [PDF]

, 2017
This paper deals with the problem of multiuser transmit hybrid analog-digital beamforming. Precisely, we tackle the problem of transmit power minimization under minimum signal-to-noise-plus-interference ratio (SINR) constraints.
Pérez-Neira, Ana I., Blanco, Luis, Vázquez, Miguel Ángel   +2 more
core   +1 more source

Robust Wideband Interference Suppression Method for GNSS Array Antenna Receiver via Hybrid Beamforming Technique

Remote Sensing
Global navigation satellite system (GNSS) array antenna receivers are widely used to suppress wideband interference in navigation countermeasures. However, existing array antenna receivers all adopt a digital array structure and digital beamforming ...
Zhenxing Xu, Qijia Dong, Shenyang Li, Fuzhan Yue, Meng Wang, Zhenghuan Xia, Xiao Chen, Shuangna Zhang, Guoji Zou, Huizheng Wang   +9 more
doaj   +1 more source

Optically Transparent Ka‐Band Absorber With Multi‐Fractal Rings and a Metal Mesh Ground Plane

Microwave and Optical Technology Letters, Volume 68, Issue 6, June 2026.
ABSTRACT An optically transparent absorber based on multi‐fractal ring resonators and a metal mesh ground plane is presented for Ka‐band applications. By merging multiple resonances, the proposed absorber maintains an absorption bandwidth from 25.8 to 31.1 GHz.
Junseong Bae, Seoyeong Min, Suho Chang, Daehyeon Kim, Donggeun An, Wonbin Hong, Youngno Youn   +6 more
wiley   +1 more source

A tunable analog delay element for high-frequency dynamic beamforming

, 2009
Implementing beamforming for high frequency arrays is challenging because of the accurate delay requirements at high frequencies. High frequency digital beamforming is not suitable for catheter based applications as a large number of cables is required ...
Şişman, Alper, Hasler, Paul E., Karaman, Mustafa, Gürün, Gökçe, Zahorian, Jaime S., Satır, Sarp, Değertekin, Fahrettin Levent   +6 more
core   +1 more source

Analog Beamforming Techniques Using Leaky-Wave Antennas & Metasurfaces

, 2023
The fifth and sixth wireless generation networks (5G & 6G) will utilize the millimeter-wave (mm-wave) band of the frequency spectrum due to the wide bandwidth availability.
Emara, Mohamed Karam A.
core   +1 more source

Analysis of Performance and Energy Efficiency for Multi-User Mimo 6G Network Using Beamforming Methods

Journal of Applied Engineering and Technological Science
This paper addresses the challenge of high energy consumption in sixth-generation (6G) multi-user multiple-input multiple-output (MU-MIMO) networks by analyzing how different beamforming techniques impact network performance and energy efficiency ...
Muhammad Farhan Haikal, Yunida Yunida, Nasaruddin Nasaruddin   +2 more
doaj   +1 more source