Results 71 to 80 of about 54,475 (182)

Digital Twin‐Based Optimization of Service Availability in LEO Mega Constellations Considering Handover Delays in Open RAN

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT As non‐terrestrial networks (NTNs) become integral to future 6G systems, ensuring seamless connectivity and service continuity over low Earth orbit (LEO) satellite constellations is essential. This work investigates the impact of open radio access network (RAN) functional splits on handover performance in NTNs, focusing on minimizing service ...
Siva Satya Sri Ganesh Seeram   +3 more
wiley   +1 more source

Joint Noniterative Beamforming Schemes for BER Minimization in Next-Generation Wireless Sensor Networks

open access: yesJournal of Electrical and Computer Engineering
This research paper proposes three joint transmit and receive (TX/RX) beamforming schemes for minimizing the bit error rates of next-generation wireless sensor networks. Based on minimizing the optimization problem of the total mean squared error between
Mohamed S. Abouzeid   +3 more
doaj   +1 more source

A review of beamforming microstrip patch antenna array for future 5G/6G networks

open access: yesFrontiers in Mechanical Engineering
With the increase in demand for high data rates and high bandwidth because of multiple users all over the globe, the technology has moved toward the next-generation of wireless communication.
Muhammad Asfar Saeed   +1 more
doaj   +1 more source

Adaptive beamforming assisted receiver

open access: yes, 2007
Adaptive beamforming is capable of separating user signals transmitted on the same carrier frequency, and thus provides a practical means of supporting multiusers in a space-division multiple-access scenario.
Sheng Chen, Chen, Sheng
core  

Digital Beamforming Techniques for Spaceborne Radar Remote Sensing [PDF]

open access: yes, 2006
This paper introduces the innovative concept of multidimensional waveform encoding for spaceborne synthetic aperture radar. The combination of this technique with digital beamforming on receive enables a new generation of SAR systems with improved ...
Moreira, Alberto   +2 more
core  

Iterative Multiuser Minimum Symbol Error Rate Beamforming Aided QAM Receiver

open access: yes, 2008
A novel iterative soft interference cancellation (SIC) aided beamforming receiver is developed for high-throughput quadrature amplitude modulation systems.
Tan, S., Chen, Sheng, Hanzo, L.
core   +1 more source

Low‐Complexity Hybrid Beamforming for LEO Satellites: Beam Update Rate Analysis and Advanced Adaptive Precoding

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Low Earth Orbit (LEO) satellite constellations offer unprecedented opportunities for global broadband connectivity but pose significant beamforming challenges due to rapid platform motion and stringent onboard hardware constraints. Fully digital architectures, while optimal in theory, remain impractical for satellite payloads, motivating ...
Mohammad Momani   +2 more
wiley   +1 more source

Spaceborne Distributed Array Processing for Precision Source Localization

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Satellite‐based signals intelligence and spectrum sensing increasingly rely on low‐latency signal localization. However, operational processing chains often remain ground‐based, stressing feeder links and limiting scalability as constellations grow.
Dany Mestas   +4 more
wiley   +1 more source

DFT-based Beamforming Weight-Vector Codebook Design for Spatially Correlated Channels in the Unitary Precoding Aided Multiuser Downlink [PDF]

open access: yes, 2010
—The DFT-based beamforming weight-vector code-book is considered as an effective design for spatially correlated channels. In this paper, we demonstrate that when the antenna elements are uniformly spaced as well as linearly arranged, and the channels ...
Yang, Lie-Liang   +5 more
core   +1 more source

Fast and Scalable Beamforming for RIS-Assisted Downlink Multicasting

open access: yesIEEE Access
This paper considers downlink multi-group multicasting via beamforming facilitated by a reconfigurable intelligent surface (RIS). We develop a fast and scalable algorithm for the joint base station (BS) and RIS beamforming optimization to minimize the ...
Mohammad Ebrahimi   +2 more
doaj   +1 more source

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