Results 71 to 80 of about 106,059 (313)

Wireless Terahertz Communications

2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2019
Over the past years, interest in wireless THz communications with so-called T-waves has tremendously increased [1]–[4], because the large carrier frequencies in the range 0.2 THz to 0.9 THz support wide signal band-widths and consequently large data rates.
Freude, W., Harter, T., Ummethala, S., Muehlbrandt, S., Blaicher, M., Wolf, S., Weber, M., Boes, F., Massler, H., Tessmann, A., Kutuvantavida, Y., Kemal, J. N., Nellen, S., Hahn, L., Globisch, B., Walther, M., Zwick, T., Randel, S., Koos, C.   +18 more
openaire   +3 more sources

Non‐Uniform Space‐Time‐Coding Modulation for Low‐Complexity Diagnostics of Reconfigurable Intelligent Surfaces

Advanced Electronic Materials, EarlyView.
A diagnostic method for reconfigurable intelligent surfaces (RIS) based on non‐uniform space‐time‐coding modulation is presented. Fault localization is achieved via amplitude‐only spectral measurements, eliminating the need for complex signal processing. A one‐to‐one mapping between harmonic components and RIS elements enables accurate detection.
Xiao Qing Chen, Lei Zhang, Yi Ning Zheng, Bing Bing Zhu, Marco Rossi, Giuseppe Castaldi, Shuo Liu, Vincenzo Galdi, Tie Jun Cui   +8 more
wiley   +1 more source

Security of Wireless Communication [PDF]

, 2009
What are the real security issues of wireless communication and wireless sensor networks in particular? Despite predictions of wireless sensor networks being deployed in many aspects of everyday life, real world deployments are still quite sparse.
openaire   +1 more source

Joint decision-making and power allocation for one-bit feedback sensor communications

, 2012
10.1109/WCL.2012.031512.110140IEEE Wireless Communications Letters13177 ...
Gong, Yi., Motani, M., Motani, Mehul, Motani, Mehul., Ting, See Ho., Zhang, Xiao Juan., Ting, S.H., Pandharipande, Ashish., Zhang, X.J., Ho, C.K., Gong, Y., Pandharipande, A., Pandharipande, A, Ho, Chin Keong., Gong, Yi, Ho, Chin Keong, Zhang, Xiao Juan, Ting, See Ho   +17 more
core   +1 more source

A General and Efficient Framework for the Rapid Design of Miniaturized, Wideband, and High‐Bit RIS

Advanced Electronic Materials, EarlyView.
A general and efficient framework is proposed for the rapid design of high‐performance reconfigurable intelligent surfaces (RISs). This framework integrates advanced antenna design techniques and incorporates various load types, quantities, and values to achieve the design of high‐performance RISs.
Jun Wei Zhang, Zheng Xing Wang, Wanwan Cao, Zhen Jie Qi, Li Jie Wu, Han Qing Yang, Qun Yan Zhou, Si Ran Wang, Hui Dong Li, Jun Yan Dai, Jiang Luo, Jun Wei Wu, Jia Nan Zhang, Zhen Zhang, Qiang Cheng   +14 more
wiley   +1 more source

An Overview of the Electromagnetic Simulation-Based Channel Modeling Techniques for Wireless Body Area Network Applications

IEEE Access, 2017
Electromagnetic simulation-based channel modeling is presently considered as a promising option for wireless body area network (WBAN) channel modeling. The benefits of simulation-based channel modeling are obvious: realistic channel characteristics for ...
Mariella Sarestoniemi, Matti Hamalainen, Jari Iinatti   +2 more
doaj   +1 more source

Synchronization in Wireless Communications

EURASIP Journal on Wireless Communications and Networking, 2009
[Abstract Not Available]
Steendam, Heidi, Panayırcı, Erdal, Ghogho, Mounir, Luise, Marco, Panayırcı, Erdal, Serpedin, Erchin   +5 more
openaire   +3 more sources

Indoor gigabit optical wireless communications: challenges and possibilities

, 2010
Indoor Gigabit optical wireless communication systems have the potential to offer multiple high-speed data services that can be delivered to homes via an optical fibre cable in the near future. In this paper we will discuss the challenges involved in the
Ghassemlooy, Zabih, Dominic O'Brien, Grahame Faulkner, Ghassemlooy, Z, Faulkner, G, O'Brien, Dominic, Faulkner, Grahame, Le Minh, H, Zabih Ghassemlooy, Le Minh, Hoa, O'Brien, D, Hoa Le Minh   +11 more
core   +1 more source

Multi-user indoor optical wireless communication system channel control using a genetic algorithm [PDF]

, 2011
A genetic algorithm controlled multispot transmitter is demonstrated that is capable of optimising the received power distribution for randomly aligned single element receivers in multiple fully diffuse optical wireless communications systems with ...
M.S. Leeson, R.J. Green, E.L. Hines, Leeson, Mark S., Hines, Evor, Higgins, Matthew D., Green, Roger, M.D. Higgins   +7 more
core   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source