Results 31 to 40 of about 71,675 (317)
Joint beamforming and power control algorithm for cognitive MIMO broadcast channels via game theory
EURASIP Journal on Wireless Communications and Networking, 2017 In this paper, we present a game-theoretic approach for the purpose of deriving the problem of joint beamforming and power control in cognitive radio (CR) multiple-input multiple-output (MIMO) broadcast channels (CR MIMO-BCs), where the primary users ...
Shunlan Zhang, Ju Ni, Qing Peng
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Tunable Terahertz Absorber Based on Bulk-Dirac-Semimetal Metasurface
IEEE Photonics Journal, 2018 We propose a tunable terahertz (THz) absorber design that utilizes a bulk Dirac semimetal (BDS)-based metasurface. The absorber consists of a BDS film with a periodic ring slot, dielectric layer, and fully reflective gold mirror.
Yannan Jiang +3 more
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Low-Complexity Robust Adaptive Beamforming Based on INCM Reconstruction via Subspace Projection
Sensors, 2021 Adaptive beamforming is sensitive to steering vector (SV) and covariance matrix mismatches, especially when the signal of interest (SOI) component exists in the training sequence.
Yanliang Duan +3 more
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Energy Efficiency in the Wideband Regime [PDF]
IEEE Transactions on Wireless Communications, 2013 End-to-end communication is the fundamental building block of communication networks. In this paper, we discuss globally optimal energy efficient design for end-to-end communications. An end-to-end multiple-hop system with one sender, one receiver, and multiple relays is considered.
Miao, Guowang, Västberg, Anders
openaire +4 more sources
Sensors, 2021 We have built a Fizeau fiber interferometer to investigate the internal cylindrical defects in an aluminum plate based on laser ultrasonic techniques. The ultrasound is excited in the plate by a Q-switched Nd:YAG laser. When the ultrasonic waves interact
Wen-Bei Liu +5 more
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Performance evaluation of OFDM and impulse-radio ultra-wideband over fiber distribution for in-building networks [PDF]
, 2009 This paper reports the compared performance of the two main ultra-wideband (UWB) implementations, OFDM-based (OFDM-UWB) and impulse-radio UWB, when transmitted over optical fiber for in-building communications employing external electro-optic modulation.
Roberto Llorente +7 more
core +1 more source
Gateway deployment algorithm based on 6LoWPAN multi-gateway system
Dianzi Jishu Yingyong, 2018 The addition of multi-gateway function and protocol in the Destination Oriented Directed Acyclic Graph (DODAG) network routing topology of 6LoWPAN is conducive to the improvement of the entire network capacity and the reduction of energy consumption and ...
He Aizhou, Zheng Lin, Qu Qiji
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Cognospectrum: Spectrum Adaptation and Evolution in Cognitive Ultra-Wideband Radio
, 2005 Cognitive Ultra Wideband (UWB) Radio is proposed to exploit the advantages of combining Cognitive Radio with Ultra Wideband technologies. In order to realize Cognitive UWB Radio, multiple pulse waveform adaptations have been investigated for producing ...
K. Yazdandoost +3 more
core +1 more source
A wideband CPW ring power combiner with low insertion loss and high port isolation [PDF]
, 2012 In this paper we present a coplanar waveguide (CPW)-based ring power combiner that exhibits less than 0.8 dB insertion loss, better than 15 dB port match and higher than 22 dB isolation loss over the frequency range from 50 GHz to 100 GHz.
Li, C. +4 more
core +1 more source
IEEE AccessMobile Edge Computing (MEC) is pivotal for supporting compute-intensive and latency-critical applications in forthcoming mobile networks. It plays an essential role in providing network services through Low Earth Orbit (LEO) satellites, especially in ...
Bo Wang, Jiecheng Xie, Dongyan Huang
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