Results 61 to 70 of about 21,890 (197)

User Effects in Beam-Space MIMO

, 2013
The performance and design of the novel single-RF-chain beam-space MIMO antenna concept is evaluated for the first time in the presence of the user. First, the variations of different performance parameters are evaluated when placing a beam-space MIMO ...
Najibi, Halima, Perruisseau-Carrier, Julien, Yousefbeiki, Mohsen   +2 more
core   +1 more source

Graphene-Based Multi-Beam Reconfigurable THz Antennas

IEEE Access, 2019
Several configurations of multi-beam reconfigurable THz antennas based on graphene have been investigated. Two modulation mechanisms of graphene-based THz antenna are introduced, one is the reflector-transmission window model, and the other is the ...
Yanbin Luo, Qingsheng Zeng, Xin Yan, Yong Wu, Qichao Lu, Chaofan Zheng, Nan Hu, Wenqing Xie, Xia Zhang   +8 more
doaj   +1 more source

A State-of-the-Art Review on 4D Printed Antennas and Other Adaptable Designs

IEEE Access
This article offers a thorough review of the current state-of-the-art in four-dimensional (4D) printed antennas and possible adaptable designs. It provides a succinct examination of various categories of materials used in three-dimensional (3D) and 4D ...
Saul S. Carvalho, Joao R. V. Reis, Rafael F. S. Caldeirinha   +2 more
doaj   +1 more source

Adaptive Wireless Networking [PDF]

, 2003
This paper presents the Adaptive Wireless Networking (AWGN) project. The project aims to develop methods and technologies that can be used to design efficient adaptable and reconfigurable mobile terminals for future wireless communication systems.
Hoeksema, Fokke, Potman, Jordy, Rauwerda, Gerard, Smit, Gerard   +3 more
core   +1 more source

High Rate/Low Complexity Space-Time Block Codes for 2x2 Reconfigurable MIMO Systems

, 2015
In this paper, we propose a full-rate full-diversity space-time block code (STBC) for 2x2 reconfigurable multiple-input multiple-output (MIMO) systems that require a low complexity maximum likelihood (ML) detector. We consider a transmitter equipped with
Hua, Yingbo, Jafarkhani, Hamid, Mehrpouyan, Hani, Vakilian, Vida   +3 more
core  

Reconfigurable Intelligent Surfaces for Wireless Communications: Principles, Challenges, and Opportunities

, 2020
Recently there has been a flurry of research on the use of reconfigurable intelligent surfaces (RIS) in wireless networks to create smart radio environments.
ElMossallamy, Mohamed A., Han, Zhu, Li, Geoffrey Ye, Seddik, Karim G., Song, Lingyang, Zhang, Hongliang   +5 more
core  

Metamaterials and Their Application in the Performance Enhancement of Reconfigurable Antennas: A Review. [PDF]

Micromachines (Basel), 2023
Hussain M, Awan WA, Alzaidi MS, Hussain N, Ali EM, Falcone F.   +5 more
europepmc   +1 more source

Reconfigurable Reflectarrays and Array Lenses for Dynamic Antenna Beam Control: A Review

, 2013
Advances in reflectarrays and array lenses with electronic beam-forming capabilities are enabling a host of new possibilities for these high-performance, low-cost antenna architectures.
Hum, Sean Victor, Perruisseau-Carrier, Julien   +1 more
core   +1 more source

Recent Trends in Reconfigurable Antennas for Modern Wireless Communication: A Comprehensive Review

International Journal of Antennas and Propagation
Reconfigurable antennas (RAs) are the key component in the modern wireless communication applications as these antennas have the ability of multifunctional and altered radiating properties in the form of radiation patterns and polarizations. The need for
Ashish Kumar, Mohammad Aljaidi, Isha Kansal, Kaznah Alshammari, Gifty Gupta, Sami Mohammed Alenezi   +5 more
doaj   +1 more source

High-Rate Space Coding for Reconfigurable 2x2 Millimeter-Wave MIMO Systems

, 2015
Millimeter-wave links are of a line-of-sight nature. Hence, multiple-input multiple-output (MIMO) systems operating in the millimeter-wave band may not achieve full spatial diversity or multiplexing.
Hua, Yingbo, Jafarkhani, Hamid, Mehrpouyan, Hani, Vakilian, Vida   +3 more
core