Results 71 to 80 of about 1,792,499 (213)
History of acoustic beamforming [PDF]
, 2006 The development of the beamforming method (also called microphone antenna, phased array of microphones, acoustic telescope, or acoustic camera) is reviewed in this paper.
Michel, U., Ulf Michel
core
DronesDistributed beamforming has emerged as a pivotal technology in modern communication systems, radar applications, and collaborative electronic warfare. Through distributed collaboration, these jamming nodes composed of unmanned aerial vehicles (UAVs) can ...
Yongjie Zhao +8 more
doaj +1 more source
On the Downlink Capacity of Cell-Free Massive MIMO with Constrained Fronthaul Capacity
Entropy, 2020 We investigate the downlink of a cell-free massive multiple-in multiple-out system in which all access points (APs) are connected in a linear-topolpgy fronthaul with constrained capacity and send a common message to a single receiver.
Peng Zhang, Frans M. J. Willems
doaj +1 more source
Distributed Beamforming in MISO SWIPT System
IEEE Transactions on Vehicular Technology, 2017 In previous works on simultaneous wireless information and power transfer (SWIPT) multiple-input single-output (MISO) system with multiple users, beamforming requires all the transmitters know the channel state information (CSI) of the whole system. We relax it so that it is a practical assumption: Each transmitter only knows its own CSI to all the ...
Renhai Feng, Mingjun Dai, Hui Wang 0022
openaire +1 more source
International 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
Distributed Beamforming Based Wireless Power Transfer: Analysis and Realization
Tsinghua Science and Technology, 2020 This paper presents a new Wireless Power Transfer (WPT) approach by aligning the phases of a group of spatially distributed Radio Frequency (RF) transmitters (TX) at the target receiver (RX) device.
Xiaoran Fan +5 more
doaj +1 more source
International 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
Ultrasound nondestructive evaluation (NDE) imaging with transducer arrays and adaptive processing [PDF]
, 2012 This paper addresses the challenging problem of ultrasonic non-destructive evaluation (NDE) imaging with adaptive transducer arrays. In NDE applications, most materials like concrete, stainless steel and carbon-reinforced composites used extensively in ...
Hayward, G., Li, M. H.
core +3 more sources
, 2010 The downlink minimum bit error rate (MBER) transmit beamforming is directly designed based on the uplink MBER receive beamforming solution for time division duplex (TDD) space-division multiple-access (SDMA) induced multiple-input multiple-output (MIMO ...
Yang, Lie-Liang, Chen, Sheng
core +1 more source
IEEE Access, 2019 Considered in this paper is a single-carrier asynchronous bidirectional cooperative network with amplify-and-forward relays helping two transceivers to exchange information.
Sahar Bastanirad +3 more
doaj +1 more source