Results 91 to 100 of about 4,646,007 (214)

Securing Communication Channels: An Advanced Steganography Approach With Orthogonal Frequency Division Multiplexing (OFDM)

open access: yesJournal of Electrical and Computer Engineering
Orthogonal frequency division multiplexing (OFDM) is a widely used modern communications technology due to its resistance to selective frequency fading and efficient use of spectrum. However, the security of OFDM signals remains a source of serious concern, especially in the face of network encryption that aims to disrupt communications or extract ...
Ammar Mohammedali Fadhil, Ali Y. Jaber
openaire   +3 more sources

Review of the channel coding, O-OFDM, and synchronization techniques of O-OFDM used in visible light communication systems

open access: yesCogent Engineering
Optical Wireless Communication (OWC) systems offer numerous benefits, such as increased bandwidth, access to an unregulated spectrum, immunity to electromagnetic interference, and the ability to reuse the spectrum effectively.
Praveen Yadav, Sangeetha R. G.
doaj   +1 more source

MIMO Transmit Diversity: Theoretical Analyses and Practical Applications [PDF]

open access: yes, 2019
The book examines several aspects of Orthogonal Frequency Division Multiplexing (OFDM) employing linear diversity techniques such as inter-carrier interference, bit error rate, peak to average power and inter-block ...
Mao, J, Xiao, Pei, Lin, Z
core  

The Performance of Turbo Coded Orthogonal Frequency Division Multiplexing System over Flat Rayleigh Fading Channel

open access: yesJournal of Engineering and Sustainable Development, 2009
This work investigates the effectiveness of Turbo Codes and Orthogonal Frequency Division Multiplexing (OFDM) system, for communication over the flat Rayleigh fading additive white Gaussian noise (AWGN) channel. The Fast Fourier Transform (FFT) is used
Khamis A. Zidan   +3 more
doaj  

Comparative Analysis between OFDMA and SC-FDMA: Model, Features and Applications

open access: yesInternational Journal of Electrical Engineering and Applied Sciences, 2019
This paper represents Orthogonal Frequency Division Multiple Access (OFDMA) and Single Carrier Frequency Division Multiple Access (SCFDMA) techniques along with the Orthogonal Frequency Division Multiplexing (OFDM).
Abdullah Al-Mamun Bulbul   +5 more
doaj  

Interleaved Orthogonal Frequency Division Multiplexing System

open access: yes, 2002
A new orthogonal frequency division multiplexing (OFDM) system for wireless communications over frequency selective fading channels is presented. The proposed interleaved orthogonal frequency division multiplexing (IOFDM) system promises higher code rate
Hari, KVS, Prasad, VGS
core  

Multilayer Hybrid Optical OFDM Design Scheme for Visible Light Communication

open access: yesGuangtongxin yanjiu
ObjectiveThe paper aims to address the limitations of hybrid Optical-Orthogonal Frequency Division Multiplexing (O-OFDM) schemes, such as Layered Asymmetric Clipped Optical Orthogonal Frequency Division Multiplexing (LACO-OFDM), within Visible Light ...
LI Zongyan   +4 more
doaj  

Comparative Analysis of Polar Coded F-OFDM and UFMC 5G NR Waveforms [PDF]

open access: yesIranian Journal of Electrical and Electronic Engineering
Fifth Generation-New Radio (5G-NR) is an advanced air interface defined to fulfil diverse services with ubiquitous coverage in next generation Wireless networks.
Smita Jolania, Ravi Sindal
doaj  

Coherent Optical OFDM Modem Employing Artificial Neural Networks for Dispersion and Nonlinearity Compensation in a Long-Haul Transmission System [PDF]

open access: yes
In order to satisfy the ever increasing demand for the bandwidth requirement in broadband services the optical orthogonal frequency division multiplexing (OOFDM) scheme is being considered as a promising technique for future high-capacity optical ...
Jarajreh, Mutsam Abdel-karim
core  

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