Results 31 to 40 of about 14,322 (142)

Design and Optimal Configuration of Full-Duplex MAC Protocol for Cognitive Radio Networks Considering Self-Interference [PDF]

, 2015
In this paper, we propose an adaptive Medium Access Control (MAC) protocol for full-duplex (FD) cognitive radio networks in which FD secondary users (SUs) perform channel contention followed by concurrent spectrum sensing and transmission, and ...
Le, Long Bao, Tan, Le Thanh
core   +2 more sources

Microwave Acoustic Device Integration for In-Band Full-Duplex Applications

IEEE Journal of Microwaves
Simultaneous transmit and receive, or in-band full-duplex (IBFD), holds significant promise for radar and wireless communication systems using time-domain cancellation at radio frequencies.
Jack Guida, Chuan Tian, Kenneth E. Kolodziej, Siddhartha Ghosh   +3 more
doaj   +1 more source

Self-Interference Cancellation Using Time-Domain Phase Noise Estimation in OFDM Full-Duplex Systems

, 2016
In full-duplex systems, oscillator phase noise (PN) problem is considered the bottleneck challenge that may face the self-interference cancellation (SIC) stage especially when orthogonal frequency division multiplexing (OFDM) transmission scheme is ...
Khattab, Tamer, Shehata, Heba
core   +1 more source

Silicon photonic integrated wideband radio frequency self-interference cancellation chip for over-the-air in-band full-duplex communication

Chip
Compared with the traditional frequency division duplex and time division duplex, the in-band full-duplex (IBFD) technology can double the spectrum utilization efficiency and information transmission rate.
Xinxin Su, Meng Chao, Xiuyou Han, Han Liang, Wenfu Zhang, Shuanglin Fu, Weiheng Wang, Mingshan Zhao   +7 more
doaj   +1 more source

Joint User Scheduling and Power optimization in Full-Duplex Cells with Successive Interference Cancellation

, 2017
This paper considers a cellular system with a full-duplex base station and half-duplex users. The base station can activate one user in uplink or downlink (half-duplex mode), or two different users one in each direction simultaneously (full-duplex mode).
Erkip, Elza, Ramirez, David, Shahsavari, Shahram   +2 more
core   +1 more source

Full-Duplex Operations in Wireless Powered Communication Networks

, 2017
In this paper, a wireless powered communication network (WPCN) consisting of a hybrid access point (H-AP) and multiple user equipment (UEs), all of which operate in full-duplex (FD), is described.
Ju, Hyungsik, Kim, Tae-Joong, Lee, Yuro
core   +2 more sources

Photonic Radio Frequency Self-Interference Cancellation and Harmonic Down-Conversion for In-Band Full-Duplex Radio-Over-Fiber System

IEEE Photonics Journal, 2019
We report a photonic radio frequency (RF) self-interference cancellation (SIC) and harmonic down-conversion (HDC) scheme based on a dual-parallel dual-drive Mach-Zehnder modulator (DDMZM).
Sha Zhu, Ming Li, Ning Hua Zhu, Wei Li
doaj   +1 more source

Design and Analysis of In-Band Full-Duplex Private 5G Networks Using FR2 Band

IEEE Access, 2021
This paper studies a solution for efficient industrial Internet of things (IIoT) communications through an in-band full-duplex (IBFD) enabled private 5G network in frequency range 2 (FR2) band ( $\geq 24.250$ GHz), where ultra-reliable low-latency ...
Haifeng Luo, Abhijeet Bishnu, Tharmalingam Ratnarajah   +2 more
doaj   +1 more source

Phase Diagrams and Piezoelectric Properties of Wurtzite Al1−x−yScxGdyN Heterostructural Alloys

Advanced Science, EarlyView.
This study demonstrates ferroelectricity and piezoelectric properties improvement of quaternary wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films, guided by density functional theory calculations. Wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films have a high optical bandgap, enhanced piezoelectric ...
Julia L. Martin, Cheng‐Wei Lee, Nate S.P. Bernstein, Thi Nguyen, Ande Bryan, Eli Cooper, John S. Mangum, Sage R. Bauers, Andriy Zakutayev, Keisuke Yazawa, Prashun Gorai, Rebecca W. Smaha   +11 more
wiley   +1 more source

Wafer‐Scale Deterministic Fabrication of Axis‐Ratio–Engineered Silicon Nanoparticles for On‐Resonance Electric–Magnetic Dipole Interference

Small, EarlyView.
Wafer‐scale top‐down fabrication yields silicon nanoparticles with exceptional uniformity (CV 1.7%–2.4%), enabling deterministic axis‐ratio tuning. At AR ≈$\approx$ 2.1, electric–magnetic dipoles overlap on‐resonance, producing near‐Kerker forward scattering (F/B ≈$\approx$ 12.5).
Taeyeong Kim, Jungchul Lee
wiley   +1 more source