Results 111 to 120 of about 79,941 (235)

Comparison of Three Different Cancellation Schemes for Orthogonal Frequency Division Multiplexing OFDM System

open access: yes, 2019
Orthogonal Frequency Division Multiplexing OFDM is an exceptional case of Frequency Division Multiplexing. The dilemma of OFDM is its sensitivity to frequency offset between the transmitted and received carrier frequencies. This frequency offset establishes Inter Carrier Interference ICI Cancellation in the OFDM symbol.
Saw, Ma Khin, Aye Aye Khine
openaire   +1 more source

Orthogonal Frequency Division Diversity and Multiplexing for 6G OWC: Principle and Underwater Use Case

open access: yesPhotonics
In this paper, we, for the first time, propose and demonstrate an orthogonal frequency division diversity and multiplexing (OFDDM) scheme for the sixth-generation (6G) underwater optical wireless communication (UOWC) systems.
Jiamin Chen   +8 more
doaj   +1 more source

TCM, TTCM, BICM and BICM-ID Assisted MMSE Multi-User Detected SDMA-OFDM Using Walsh-Hadamard Spreading

open access: yes, 2004
Space Division Multiple Access (SDMA) aided Orthogonal Frequency Division Multiplexing (OFDM) systems assisted by efficient Multi-User Detection (MUD) techniques have recently attracted intensive research interests. Forward Error Correction (FEC) schemes
Hanzo, L., Jiang, M., Ng, S. X.
core  

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   +2 more sources

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  

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  

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