Results 51 to 60 of about 67,114,416 (300)

A rapid fingerprint positioning method based on deep convolutional neural network for MIMO-OFDM systems

Urban Lifeline
The combination of fingerprint positioning and 5G (the 5th Generation Mobile Communication Technology) offers broader application prospects for indoor positioning technology, but also brings challenges in real-time performance.
Chenlin He, Xiaojun Wang, Jiyu Jiao, Yuhua Huang, Chengpei Han, Yizhuo Zhang, Jianping Zhu   +6 more
doaj   +1 more source

Integrated Sensing and Communications: A Research Roadmap

IEEE Access
Integrated sensing and communications (ISAC) is emerging as a major architectural direction for next-generation wireless systems. By jointly designing environmental sensing and wireless data transmission within a unified framework, ISAC offers the ...
Ian F. Akyildiz, Shih-Chun Lin
doaj   +1 more source

Use of a Rapid Method for Achieving Optimal Sensing Duration and Analysis of Data Rate Loss of Cognitive Radio Due to CLT

IEEE Access, 2018
The central limit theorem (CLT)-based Gaussian approximation facilitates the probability analysis of cognitive radio (CR), but it incurs data rate loss due to the inaccurate configuration of the optimal sensing duration (OSD).
Bin Gu, Tiecheng Song, Jing Hu, Zhengquan Li, Dafei Sun   +4 more
doaj   +1 more source

Self‐Powered, Ultra‐Sensitive InGaAs/ITO Nanowire Radial Junction Infrared Photodiode for Low Flux Imaging at Room Temperature

Advanced Functional Materials, EarlyView.
This study reports a self‐powered InGaAs nanowire photodetector achieving single‐photon‐level sensitivity in the shortwave infrared at non‐cryogenic temperatures. The device demonstrates high‐speed imaging capabilities even under extremely low‐flux conditions.
Kosala Dhanawansha, Chaohao Chen, Zhe Li, Tuomas Haggren, Dawei Liu, Yang Yu, Baolei Liu, Sanjay Krishna, Hark H. Tan, Chennupati Jagadish, Lan Fu   +10 more
wiley   +1 more source

Advancing Undergraduate Research: Marketing, Communications, and Fundraising

, 2011
Advancing Undergraduate Research is designed to share successful models and strategies for promoting and funding undergraduate research programs. This is the first book to address the growth and improvement of undergraduate research programs through ...
Kinkead, Joyce
core   +1 more source

Advanced Research in Shipping Informatics and Communications

Journal of Marine Science and Engineering
The shipping industry, a vital part of global trade and the maritime transport system (MTS) and a critical infrastructure for all nations, is undergoing a technological evolution through the integration of advanced information and communication ...
Nikitas Nikitakos, Iosif Progoulakis
doaj   +1 more source

Downlink Transmission Strategies in Power-Splitting SWIPT Distributed MISO Systems

IEEE Access, 2018
This paper investigates the joint beamforming and power splitting factor optimization in distributed multiple input single output systems with power-splitting simultaneous wireless information and power transfer (SWIPT).
Huanhuan Mao, Bingqian Xu, Pengcheng Zhu, Jiamin Li, Xiaohu You   +4 more
doaj   +1 more source

Joint Beamforming and Trajectory Optimization for Intelligent Reflecting Surfaces-Assisted UAV Communications

IEEE Access, 2020
Unmanned aerial vehicle (UAV) and intelligent reflecting surface (IRS) are anticipated to be widely applied for improving the spectrum and energy efficiency in the forthcoming wireless communication systems.
Linghui Ge, Peihao Dong, Hua Zhang, Jun-Bo Wang, Xiaohu You   +4 more
doaj   +1 more source

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

Advanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis, Filip Aniés, Yiyang Yu, Mohammed Ghadiyali, Hendrik Faber, Zhanibek Bizak, Youssef Kabri, Pavlos Tzourmpakis, Suman Mandal, Linqu Luo, Temur Maksudov, Mohamad Insan Nugraha, Harold F. Mazo‐Mantilla, Patrice Vanelle, Julie Broggi, Khaled N. Salama, Udo Schwingenschlögl, Martin Heeney, Atif Shamim, Thomas D. Anthopoulos   +19 more
wiley   +1 more source

Non-Orthogonal Unicast and Multicast Transmission for Massive MIMO With Statistical Channel State Information

IEEE Access, 2018
We investigate non-orthogonal unicast and multicast (NOUM) transmission for massive multiple-input multiple-output systems, where only statistical channel state information of all user terminals is available at the base station.
Li You, Jiayuan Xiong, Ke-Xin Li, Wenjin Wang, Xiqi Gao   +4 more
doaj   +1 more source