Results 81 to 90 of about 668,337 (217)

Adaptive beamforming assisted receiver

, 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
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Performance analysis of layered random beamforming OFMDA with feedback reduction [PDF]

, 2007
This paper presents a downlink performance analysis of a Layered Random Beamforming (LRB) - MIMO-OFDMA Physical Layer (PHY) with feedback reduction as applicable to future generation wireless communication systems.
Joe McGeehan, Yong Sun, Angela Doufexi, Doufexi, A, McGeehan, JP, Han, C, Sun, Y, Armour, SMD, Simon Armour, Congzheng Han   +9 more
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Cooperative Beamforming With Predictive Relay Selection for Urban mmWave Communications

IEEE Access, 2019
While millimeter wave (mmWave) communications promise high data rates, their sensitivity to blockage and severe signal attenuation present challenges in their deployment in urban settings.
Anastasios Dimas, Dionysios S. Kalogerias, Athina P. Petropulu   +2 more
doaj   +1 more source

An efficient scheme for broadband adaptive beamforming [PDF]

, 1999
This paper introduces an oversampled subband approach to linearly constrained minimum variance adaptive broadband beamforming. This method is motivated by the considerable reduction in computation over fullband implementation and resulting large ...
S. Weiss, I.K. Proudler, Weiss, S., R.W. Stewart, Stewart, R.W., M.W. Hoffman, Schabert, Marion, Hoffman, Michael, Weiss, Stephan, Proudler, I., Schabert, M., M. Schabert, Hoffman, M.W., Stewart, Robert   +13 more
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A Unified Performance Optimization for Secrecy Wireless Information and Power Transfer Over Interference Channels

IEEE Access, 2017
In this paper, we give a unified performance optimization for secrecy wireless information and power transfer over interference channels, where an external eavesdropper is also interested in the confidential message.
Xiaoming Chen, Xianfu Chen, Tao Liu
doaj   +1 more source

Virginia Cooperative Extension Volunteer Screening Guidelines

, 2020
Frequently asked questions for Virginia Cooperative Extension volunteers.

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Investigation of Randomly Populated Cylindrical, Spherical, and Cubical Arrays for Application in Space, Aerial, and Underwater Collaborative Beamforming

IEEE Access
This work investigates and analyzes collaborative beamforming for a Swarm-enabled distributed sensing project. It investigates the use of a three-dimensional, randomly populated, and uniformly-distributed array in three configurations: spherical ...
Kristopher R. Buchanan, Roanne Manzano-Roth, Annie Lin, Gabriella Loaiza, Meghan Sills, Jin Li, Sara R. Wheeland, Sounak Chakrabarti, Angelica R. Rodriguez, Gregory H. Huff, Mark Patefield, Anthony Jones   +11 more
doaj   +1 more source

Successive orthogonal beamforming for cooperative multi‐point downlinks

IET Communications, 2013
This study considers successive orthogonal beamforming (SOBF) for multicell downlink transmissions. A group of base stations (BSs) are in cooperation for effective downlink transmissions to cell‐edge users, which is usually referred to as cooperative multi‐point.
Yingbo Li, Lin Bai 0001, Chen Chen 0002, Ye Jin, Jinho Choi 0001   +4 more
openaire   +2 more sources

Direction-of-Arrival Estimation for a Floating HFSWR Through Iterative Adaptive Beamforming of Focusing Concept

Remote Sensing
Floating high-frequency surface-wave radar provides an effective solution to widening the range of detection by such radar systems. However, for high-frequency radars with long coherence integration times, the yaw angle variations during this period can ...
Xianzhou Yi, Min Qu, Zhihui Li, Shuyun Shi, Li Wang, Xiongbin Wu, Liang Yu   +6 more
doaj   +1 more source

Virginia Cooperative Extension Pledge Form

, 2014
This is a two page gift/pledge form in support of Virginia Cooperative ...

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