Results 61 to 70 of about 5,733 (189)

Design of Reconfigurable SDR Platform for Antenna Selection Aided MIMO Communication System

IEEE Access, 2019
In recent years, antenna selection (AS) has become one of the most popular research topics for massive multiple-input multiple-output (MIMO) system due to its capability of reducing the number of radio frequency chains utilized for MIMO communications ...
Peichang Zhang, Jiajun Xu, Shida Zhong, Haogang Feng, Lei Huang, Tao Yuan, Jiankang Zhang   +6 more
doaj   +1 more source

Space‐Time‐Coding Metasurfaces Enabling Programmable Range‐Angle‐Dependent Energy Auto‐Scanning

Nanophotonics, Volume 15, Issue 14, 27 July 2026.
This paper presents a novel energy auto‐scanning system based on a space‐time‐coding metasurface. By applying progressive time‐delayed, time‐varying phase modulation, the system generates non‐uniform, temporally evolving electromagnetic field distributions across both angle and range.
Yuzhen Chen, Xiaoyi Wang, Guo‐Min Yang, Ya‐Qiu Jin   +3 more
wiley   +1 more source

Key Technologies in Massive MIMO

ITM Web of Conferences, 2018
The explosive growth of wireless data traffic in the future fifth generation mobile communication system (5G) has led researchers to develop new disruptive technologies. As an extension of traditional MIMO technology, massive MIMO can greatly improve the
Hu Qiang, Zhang Meixiang, Gao Renzheng
doaj   +1 more source

Ultra‐Low Loss Weakly Coupled Few‐Mode Hollow‐Core Anti‐Resonant Fiber Enabling Eight Channels via Differential Wall Thickness and Truncated Tubes

Nanophotonics, Volume 15, Issue 13, 13 July 2026.
A novel ultra‐low loss, weakly coupled few‐mode hollow‐core anti‐resonant fiber is realized through truncated tubes and differential wall thickness, which can support eight spatial modes as independent channels. The effective refractive index difference between adjacent modes is greater than 1.0 × 10−4, and the intrinsic loss of all target modes at ...
Biao Wang, Qiang Shi, Xin Wang, Shuqin Lou, Zhenggang Lian   +4 more
wiley   +1 more source

Gain and isolation improvement techniques for MIMO antenna: A compendious survey

Results in Engineering
Multiple Input Multiple Output (MIMO) antenna technology plays a vital role in improving the key performance of Wireless communication systems. The performance parameters include high data rates, low latency, expanding channel capacity, increased quality
Jayaraman G, Indrasen Singh, Dilip Kumar Choudhary   +2 more
doaj   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, Volume 11, Issue 13, 8 July 2026.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Near‐Field Coupling Suppression of Dual Circularly Polarized Antennas via Epsilon‐Near‐Zero Metamaterial

Advanced Photonics Research, Volume 7, Issue 7, July 2026.
An ENZ metamaterial slab enables near‐field coupling suppression in dual circularly polarized stacked patch antennas while preserving radiation performance. The near‐zero‐index environment attenuates the transmission of parasitic coupling components between adjacent radiators, distinct from conventional current‐cancelation or port‐compensation ...
Yi Zhao, Lu Song, Zanyang Wang, Liqiao Jing, Dashuang Liao, Jiangang Liang   +5 more
wiley   +1 more source

Optimized Joint Relay and Antenna Selection for Enhanced Full‐Duplex Relay Networks

Engineering Reports, Volume 8, Issue 7, July 2026.
This study proposes a joint relay and antenna selection strategy for full‐duplex amplify‐and‐forward relay networks. By adaptively optimizing transmitter–receiver configurations based on channel conditions, the method reduces self‐interference, lowers outage probability, and symbol error rate, and enhances spectral efficiency, offering a scalable ...
Deepika Rani Sona, Visalakshi Annepu, Kalapraveen Bagadi, Olutayo O. Oyerinde   +3 more
wiley   +1 more source

Orthogonally Precoded Massive MIMO for High Mobility Scenarios

IEEE Access, 2019
Massive multiple-input multiple-output (MIMO) systems are of high interest for ultra-reliable low-latency communication (URLLC) links. They provide channel hardening, i.e.
Thomas Zemen, David Loschenbrand, Markus Hofer, Christoph Pacher, Benjamin Rainer   +4 more
doaj   +1 more source

A Printed Wide‐Slot Antenna With Modified Tuning Stub and Parasitic Elements for Glucose Sensing Applications

Engineering Reports, Volume 8, Issue 7, July 2026.
A compact printed wide‐slot antenna with a diamond‐shaped tuning stub and parasitic elements achieves an ultrawide impedance bandwidth of 256% (2.4–16.2 GHz). Its capacitive nature enables frequency shifts with dielectric variations, making it highly suitable for accurate, non‐invasive glucose sensing applications.
A. K. Arya, Rao Shahid Aziz, Ali M. Almuhlafi, Hamsakutty Vettikalladi, Zhenzhen Jiang, Arjun Kumar, Vipin Balyan, Gunjan Gupta   +7 more
wiley   +1 more source