Results 101 to 110 of about 20,056 (308)

The Analysis of Service Convergence in an Optical Access Network

Engineering Proceedings
In recent years, the increasing number of internet-connected devices has exceeded the capacity of fourth-generation (4G) cellular networks, leading to the development of fifth-generation (5G) technology, designed to offer higher speeds, greater bandwidth,
Erick Cifuentes, David Mosquera, Christian Tipantuña, Berenice Arguero, Germán V. Arevalo   +4 more
doaj   +1 more source

2 $\times$ 2 MIMO OFDM-RoF System Employing LMS-Based Equalizer With I/Q Imbalance Compensation at 60 GHz

IEEE Photonics Journal, 2014
Multiple-input-multiple-output (MIMO) technology is a promising method to increase spectral efficiency in wireless communications. In this paper, a 60-GHz orthogonal frequency-division multiplexing radio over fiber (OFDM-RoF) system employing 2 × ...
Hou-Tzu Huang, Po-Tsung Shih, Chun-Ting Lin, Yu-Hsuan Cheng, Wan-Ling Liang, Chun-Hung Ho, Chia-Chien Wei, Anthony Ng'oma   +7 more
doaj   +1 more source

Versatile Pneumatic Twisted Coiled Actuators Enabled by Fiber‐Polymer Composite Fabrication

Advanced Functional Materials, EarlyView.
This work reports composite Pneumatic Twisted Coiled Actuators with embedded Kevlar fibers that convert pneumatic or hydraulic pressure into powerful linear motion. A novel precise manufacturing technique is used to systematically explore how design variables influence actuator mechanics and dynamics.
William J. Townsend, Jeongmin Kim, Samuel Tsai, Yichao Shi, Sameh Tawfick, James H. Pikul   +5 more
wiley   +1 more source

2D Pre-Beamforming Control Method via Analog Radio Over Fiber for Wireless Communication Systems With Massive Planar Array Antenna

IEEE Access
To rapidly deploy large capacity wireless communication services using high frequency bands, a system is being considered that use radio-over-fiber (RoF) technology to separate the wireless base station function into a central station (CS) with signal ...
Mizuki Suga, Yuta Takahashi, Yasuyoshi Yamamoto, Hideki Toshinaga, Naoki Kita, Takeshi Onizawa   +5 more
doaj   +1 more source

Performance evaluation of radio-over-fibre (RoF) system using Mach-Zehnder Modulator (MZM) and on-off keying (OOK) modulation schemes [PDF]

, 2010
This paper investigates the bit error rate (BER) performance of a radio-over-fibre system utilizing binary phase shift keying (BPSK) at radio frequency (RF) of 5 GHz. The RF signal is externally modulated using the Mach-Zehnder modulator (MZM).
Ghassemlooy, Zabih, Ng, Wai Pang, Bahrami, Arash, Kanesan, Thavamaran, Rajbhandari, Sujan, Abd El Aziz, Ahmad   +5 more
core  

Investigation of Optical Modulators in Optimized Nonlinear Compensated LTE RoF System [PDF]

, 2014
In this paper, we investigate a nonlinear compensation technique with two different architectures using direct modulation (DM) and external modulation (EM) techniques, termed as DM based frequency dithering (DMFD) and EM based frequency dithering (EMFD).
Ghassemlooy, Zabih, Ng, Wai Pang, Kanesan, Thavamaran, Lu, Chao   +3 more
core   +1 more source

Multicore fiber scenarios supporting power over fiber in radio over fiber systems

, 2021
We propose the integration of power over fiber in the next generation 5G radio access network front-haul solutions based on spatial division multiplexing with multicore fibers. The different architectures in both shared- and dedicated- core scenarios for power over fiber delivery and data signals are described.
Vázquez García, María Carmen, López Cardona, Juan Dayron, Contreras Lallana, Pedro, Sánchez Montero, David Ricardo, Pérez Prieto, Sandra, Pérez Garcilópez, Antonia Isabel   +5 more
openaire   +1 more source

Deep Learning Equalizer Connected with Viterbi-Viterbi Algorithm for PAM D-Band Radio over Fiber Link. [PDF]

Sensors (Basel), 2023
Xie T, Sheng Q, Yu J.
europepmc   +1 more source

Ultrawide Bandwidth Optomechanical Magnetometry Using Flux Concentration

Advanced Functional Materials, EarlyView.
High‐permeability flux concentrators enable ultrawide‐bandwidth chip‐scale optomechanical magnetometry by exploiting magnetic nonlinearity to up‐convert low‐frequency fields to the mechanical resonance, where sensitivity is optimal. This enables flat wideband operation over more than four orders of magnitude, from tens of kilohertz to sub‐hertz ...
Benjamin J. Carey, Nathaniel Bawden, Fernando Gottardo, James S. Bennett, Douglas Bulla, Scott Foster, Warwick P. Bowen   +6 more
wiley   +1 more source

Reduced Dispersion Duplex DQPSK Radio-Over-Fiber Communications Using Single-Laser-Based Multiple Side-Bands [PDF]

Multiple side-bands are generated from a single laser diode with the aid of optical carrier suppression, which facilitates the transmission of reduced-rate parallel streams mapped to the side-bands. As a benefit, all the signal processing tasks including
Hanzo, Lajos, Ghafoor, Salman
core