Results 91 to 100 of about 106,474 (328)

Multiband Real-Time Coherent Optical OFDM Reception up to 110 Gb/s with 600-km Transmission

open access: yesIEEE Photonics Journal, 2010
We demonstrate field-programmable gate array (FPGA)-based multiband orthogonal frequency-division multiplexing (OFDM) signal reception after 600-km standard single-mode fiber (SSMF) transmission and 400-ps differential-group delay (DGD) at 110-Gb/s.
Simin Chen, Yiran Ma, William Shieh
doaj   +1 more source

Iterative Joint Channel Estimation and Multi-User Detection for Multiple-Antenna Aided OFDM Systems

open access: yes, 2007
Multiple-Input-Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems have recently attracted substantial research interest. However, compared to Single-Input-Single-Output (SISO) systems, channel estimation in the MIMO scenario
Akhtman, J, Hanzo, L., Jiang, M
core   +1 more source

Nature‐Inspired Nanostructures from Multiple‐Species Biomembranes: Rational Engineering and Therapeutic Applications in Tumor‐Targeted Nanomedicine

open access: yesAdvanced Science, EarlyView.
Naturally derived biomembrane nanostructures by mimicking evolutionarily optimized biological architectures could effectively suppress tumor growth and have emerged as a compelling strategy in translational biomedicine. This review provides a systematic overview of rational design and underlying antitumor therapeutic mechanisms of mammalian cells ...
Xiaodan Wei   +10 more
wiley   +1 more source

Principles,technologies and challenges of OQAM-OFDM for 5G applications

open access: yesDianxin kexue, 2016
5G will need to be able to support much larger connections of communication devices and meet the requirements of diverse scenarios.However,this requirement cannot be met by OFDM(orthogonal frequency division multiplexing)due to its own drawbacks.As an ...
Jun LI   +4 more
doaj   +2 more sources

A highly sustainable multi-band orthogonal wavelet code division multiplexing UWB communication system for underground mine channel

open access: yesDigital Communications and Networks, 2018
The underground mine channel is highly hostile for communication. A sustainable communication system is required to be integrated as a multipurpose system capable of transferring all types of information such as data, voice and video on identical ...
Athar Ravish Khan, Sanjay M. Gulhane
doaj  

Performance Analysis of Optical Wireless Channel Based on Beamforming Techniques Using Advanced Modulation Schemes

open access: yesTikrit Journal of Engineering Sciences
The need for a very high data rate in the next-generation wireless network is growing, and optical wireless communication has become one of the best options for addressing this important problem. The optical system endures power and bandwidth losses due
Lwaa Faisal Abdulameer   +2 more
doaj   +1 more source

New Full-Diversity Space-Time-Frequency Block Codes with Simplified Decoders for MIMO-OFDM Systems [PDF]

open access: yes, 2014
Multiple-input multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) is known as a promising solution for wideband wireless communications. This is why it has been considered as a powerful candidate for IEEE 802.11n standard.
Mohammadian, Z.   +2 more
core   +1 more source

Orthogonal Chirp Division Multiplexing

open access: yes, 2016
Chirp waveform plays a significant role in radar and communication systems for its ability of pulse compression and spread spectrum. This paper presents a principle of orthogonally multiplexing a bank of linear chirp waveforms within the same bandwidth ...
Ouyang, Xing, Zhao, Jian
core   +1 more source

An introduction to orthogonal frequency-division multiplexing

open access: yes, 1996
Godkänd; 1997; 20080220 (ysko)
Edfors, Ove   +4 more
openaire   +2 more sources

Orthogonal Frequency Division Multiplexing and its Applications

open access: yes, 2013
Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier modulation technique which is very much popular in new wireless networks of IEEE standard, digital television, audio broadcasting and 4G mobile communications. The main benefit of OFDM over single-carrier schemes is its ability to cope with severe channel conditions without complex ...
Chadha, Ankit   +2 more
openaire   +2 more sources

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