Results 11 to 20 of about 899,302 (354)
Energy Efficient Power Allocation for Downlink NOMA Heterogeneous Networks With Imperfect CSI
IEEE Access, 2019 Non-orthogonal multiple access (NOMA) is a promising emerging technology that can significantly improve the utilization of spectrum and system capacity in heterogeneous wireless networks.
Xin Song +4 more
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Joint Uplink and Downlink Resource Allocation for D2D Communications System
Future Internet, 2019 In cellular networks, device-to-device communications can increase the spectrum efficiency, but some conventional schemes only consider uplink or downlink resource allocation.
Xin Song +4 more
doaj +1 more source
Design of a polarization selective surface for co‐channel interference suppression
Electronics Letters, 2022 In this paper, a novel design of polarization selective surface (PSS) is proposed for co‐channel interference (CCI) suppression. By establishing a switchable doublet topology, two types of second‐order filtering responses with two transmission zeros are ...
Xian Wang +4 more
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Novel small-size directional antenna for UWB WBAN/WPAN applications [PDF]
, 2005 This paper presents a novel small-size directional antenna design for ultrawide-band wireless body area networks/wireless personal area networks applications.
Klemm, M +3 more
core +2 more sources
Future Internet, 2019 In this paper, we propose an optimal time and power allocation scheme in a wireless power supply full-duplex (FD) relay system, where we consider the number of relay antennas in the energy harvesting stage.
Xin Song +4 more
doaj +1 more source
IEEE Microwave Magazine, 2006 The development of the broadband antenna for ultrawideband (UWB) applications such as communications, imaging, radar, and localization is discussed. UWB systems are based on transmitting and receiving impulses with extremely wide spectra. As the antennas for UWB should have broad operating bandwidths for impedance matching and high-gain radiation in ...
Cheng, Zhi Ning +5 more
openaire +3 more sources
Effect of wall thickness on broadband design of a Ka-band TE21-mode coupler
Journal of Electronic Science and Technology, 2021 Commonly, the classical formulas for designing TE21-mode coupler are suitable for the operating frequency under Ka-band by virtue of ignoring wall thickness.
Wei Zheng +3 more
doaj +1 more source
Sensors, 2023 In the ever-evolving landscape of modern wireless communication systems, the escalating demand for seamless connectivity has propelled the imperative for avant garde, versatile, and high-performance antennas to unprecedented heights [...]
Naser Ojaroudi Parchin +2 more
openaire +4 more sources
Future Internet, 2019 In this paper, we propose a joint power allocation, time switching (TS) factor and relay selection scheme for an energy harvesting two-way relaying communication network (TWRN), where two transceivers exchange information with the help of a wireless ...
Xin Song +3 more
doaj +1 more source
IET Microwaves, Antennas & Propagation, 2021 This study reports a class of balanced‐to‐unbalanced (BTU) and balanced‐to‐balanced (BTB) filtering rat‐race couplers (FRCs) based on multilayer substrate integrated waveguide (SIW) cavities.
Xian Wang +5 more
doaj +1 more source