Results 21 to 30 of about 4,646,007 (214)

Understanding the effects of phase noise in orthogonal frequency division multiplexing (OFDM) [PDF]

open access: yesIEEE Transactions on Broadcasting, 2001
This work was supported in part by the European Commission and Spanish CICYT in the project 2FD97-1066-C02-02.
openaire   +3 more sources

Characterization of Orthogonal Frequency Division Multiplexing (OFDM) Communication Links

open access: yesAmerican Journal of Electrical and Electronic Engineering, 2020
The demand for high data rate transmission is rapidly increasing in the area of wireless communications and Orthogonal Frequency Division Multiplexing (OFDM) is known to be a promising technique for high-rate transmission that can overcome the inter symbol interference (ISI) which results from the time dispersive nature of wireless channels.
Rahmon Kamorudeen Adewale   +2 more
openaire   +1 more source

OFDM transmission scheme with subcarrier supply index modulation

open access: yesTongxin xuebao, 2023
To address the drawback that subcarrier activation pattern (SAP) of the orthogonal frequency division multiplexing with index modulation (OFDM-IM) cannot match the binary numbers which affects the system performance, the orthogonal frequency division ...
Yi GUO   +3 more
doaj   +2 more sources

Sparse Orthogonal Circulant Transform Multiplexing for Coherent Optical Fiber Communication

open access: yesIEEE Photonics Journal, 2018
This paper introduces a new multicarrier system, named sparse orthogonal circulant transform multiplexing (S-OCTM), for optical fiber communication. This technique uses an inverse sparse orthogonal circulant transform (S-OCT) matrix, which is simple and ...
Yukui Yu   +4 more
doaj   +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

Robust time synchronization for NC-OFDM cognitive radio systems

open access: yesJournal of King Saud University: Computer and Information Sciences, 2022
In this paper, we propose a time-synchronization method for non-contiguous orthogonal frequency division multiplexing (NC-OFDM) systems. NC-OFDM is a modulation and multiplexing technique that is often used for cognitive radio (CR) systems. In OFDM-based
Suyoto Suyoto   +3 more
doaj   +1 more source

ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING [PDF]

open access: yes, 2020
Orthogonal frequency division multiplexing (OFDM) is a method of modulation of digital signal ...
Priti Dhama, Pallavi Goel
core  

Unified MIMO-multicarrier designs: a space–time shift keying approach [PDF]

open access: yes, 2015
A survey and tutorial is provided on the subject of multiple-input multiple-output (MIMO) multicarrier (MC) systems relying on the space-time shift keying concept.
Sugiura, Shinya   +3 more
core   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

open access: yesAdvanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang   +9 more
wiley   +1 more source

CLEAR Interference Cancellation in a Wideband Dual‐Channel Receiver for Independent Satellite Multi‐Connectivity Links

open access: yesInternational Journal of Satellite Communications and Networking, Volume 44, Issue 6, Page 689-699, November/December 2026.
ABSTRACT In this paper, the correlation learning estimation and adaptive reduction (CLEAR) of interference, an adaptive, blind and transparent interference compensation method applied in a wideband dual‐channel receiver, is studied for a pair of independent satellite multi‐connectivity links, using the same carrier frequency and signal bandwidth in use
Svilen Dimitrov
wiley   +1 more source

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