Results 21 to 30 of about 53,847 (285)

Performance Evaluation of a 4 × 20-Gbps OFDM-Based FSO Link Incorporating Hybrid W-MDM Techniques

Frontiers in Physics, 2021
Free space optics (FSO) has been recognized as a crucial technique to meet the high-bandwidth requirements in future wireless information transmission links.
Mehtab Singh, Mehtab Singh, Saleh Chebaane, Saleh Chebaane, Sana Ben Khalifa, Sana Ben Khalifa, Amit Grover, Sanjeev Dewra, Mohit Angurala   +8 more
doaj   +1 more source

Space-division multiplexing in optical fibres [PDF]

Nature Photonics, 2013
Optical communications technology has made enormous and steady progress for several decades, providing the key resource in our increasingly information-driven society and economy. Much of this progress has been in finding innovative ways to increase the data carrying capacity of a single optical fibre.
Richardson, D.J., Fini, J.M., Nelson, L.E.   +2 more
openaire   +4 more sources

MIMO-OFDM/OCDM low-complexity equalization under a doubly dispersive channel in wireless sensor networks

International Journal of Distributed Sensor Networks, 2020
In this article, three novel systems for wireless sensor networks based on Alamouti decoding were investigated and then compared, which are Alamouti space–time block coding multiple-input single-output/multiple-input multiple-output multicarrier ...
Ahmad AA Solyman, Hani Attar, Mohammad R Khosravi, Baki Koyuncu   +3 more
doaj   +1 more source

Optical Networking Beyond WDM

IEEE Photonics Journal, 2012
Wavelength-division multiplexing (WDM) has been the workhorse of data networks, accommodating exponential traffic growth for two decades. Recently, however, progress in WDM capacity research has markedly slowed down as experiments are closely approaching
Peter J. Winzer
doaj   +1 more source

Space Division Multiplexing Using Multi-Element Fibers [PDF]

2014 IEEE Photonics Society Summer Topical Meeting Series, 2014
Multi-element Fibers (MEFs) are presented as an alternative spatial division multiplexing (SDM) technology which can address some of the drawbacks that current implementations exhibit. The benefits obtained from this fiber geometry show that MEF can be a cost-effective solution for SDM implementation in commercial optical networks.
Rancaño, V.J.F., Jain, S., May-Smith, T.C., Sahu, J.K., Petropoulos, P., Richardson, D.J.   +5 more
openaire   +2 more sources

High Speed Visible Light Communication Using Digital Power Domain Multiplexing of Orthogonal Frequency Division Multiplexed (OFDM) Signals

Photonics, 2021
In order to increase transmission capacity, multiplexing schemes in different physical dimensions, including time, frequency, modulation quadrature, polarization, and space, can be employed.
Wahyu-Hendra Gunawan, Yang Liu, Chi-Wai Chow, Yun-Han Chang, Chien-Hung Yeh   +4 more
doaj   +1 more source

Phase-coherent lightwave communications with frequency combs [PDF]

, 2019
Fiber-optical networks are a crucial telecommunication infrastructure in society. Wavelength division multiplexing allows for transmitting parallel data streams over the fiber bandwidth, and coherent detection enables the use of sophisticated modulation ...
Andrekson, Peter A., Foo, Benjamin, Karlsson, Magnus, Lundberg, Lars, Mazur, Mikael, Mirani, Ali, Schröder, Jochen, Torres-Company, Victor   +7 more
core   +2 more sources

A comparison of MIMO-OFDM and MIMO-SCFDE in WLAN environments [PDF]

, 2003
Recent developments in orthogonal frequency division multiplexing (OFDM) and single-carrier frequency-domain equalization (SCFDE) have sparked debate about the superiority of one method over the other.
Armour, SMD, Beach, MA, Coon, J, McGeehan, JP, Nix, AR, Siew, J   +5 more
core   +2 more sources

Polarization Hierarchy and System Operating Architecture for Polarimetric Synthetic Aperture Radar

Leida xuebao, 2016
Polarization hierarchy and system operating architecture is one of the key technologies for Polarimetric Synthetic Aperture Radar (PolSAR) system design.
Yang Ruliang, Dai Bowei, Li Haiying
doaj   +1 more source

High-capacity free-space optical communications using wavelength- and mode-division-multiplexing in the mid-infrared region

Nature Communications, 2022
A 300-Gbit/s free-space optical communication system is demonstrated in the mid-IR wavelength region by using both wavelength- and mode-division multiplexing.
Kaiheng Zou, Kai Pang, Hao Song, Jintao Fan, Zhe Zhao, Haoqian Song, Runzhou Zhang, Huibin Zhou, Amir Minoofar, Cong Liu, Xinzhou Su, Nanzhe Hu, Andrew McClung, Mahsa Torfeh, Amir Arbabi, Moshe Tur, Alan E. Willner   +16 more
doaj   +1 more source