Low complexity blind estimation of residual carrier offset in orthogonal frequency division multiplexing-based wireless local area network systems [PDF]
, 2007 S. Attallah, Yan Wu, J.W.M. Bergmans
openalex +1 more source
Dual‐Band Metasurface‐Based Structured Light Generations for Futuristic Communication Applications
Small Science, EarlyView.This study introduces a single‐cell‐driven dual‐band metasurface platform generating nondiffracting perfect vortex beams for Ultraviolet–Visible wavelengths. The metasurfaces, composed of silicon nitride nanoantennas, maintain high transmission efficiency across dual spectrums.
Muhammad Danial Shafqat +11 more
wiley +1 more source
IEEE Photonics Journal, 2017 We experimentally demonstrate a single-end photodetector (PD) based polarization-division-multiplexing (PDM) system, in which the single-sideband orthogonal frequency-division multiplexing (SSB-OFDM) and discrete multitone (DMT) signals are modulated on ...
Xian Zhou +11 more
doaj +1 more source
Multicarrier Chirp-Division Multiplexing for Wireless Communications [PDF]
arXiv, 2018 We propose a multicarrier chirp-division multiplexing (MCDM) system in which orthogonal chirp waveforms are utilized as frequency subcarriers. Orthogonal characteristics of chirp subcarriers are analyzed in respect to cross-correlation coefficients among subcarriers. Moreover, orthogonal chirp transform (OCT) is developed to implement MCDM systems.
arxiv
Analyzing the effects of peak to average power ratio and digital predistortion in orthogonal frequency division multiplexing (OFDM) systems [PDF]
, 2011 Pooria Varahram, Mohd Ali Borhanuddin
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CHANNEL EVALUATION FOR MULTIPLE INPUT MULTIPLE OUTPUT SCHEMES IN STABLE WIRELESS APPLICATIONS [PDF]
, 2013 In the forthcoming wireless systems, the data rate necessities have amplified, but the requirement for power efficient and low complication solutions still exists.
Raju, K. Ratna, Suresh, P.
core
Spread-Spectrum Based on Finite Field Fourier Transforms [PDF]
arXiv, 2015 Spread-spectrum systems are presented, which are based on Finite Field Fourier Transforms. Orthogonal spreading sequences defined over a finite field are derived. New digital multiplex schemes based on such spread-spectrum systems are also introduced, which are multilevel Coding Division Multiplex.
arxiv
Investigation on orthogonal frequency division multiplexing with index modulation [PDF]
, 2019 This thesis is devoted to investigating orthogonal frequency division multiplexing (OFDM) with index modulation (OFDM-IM) to improve its bit error rate (BER) performance and spectral efficiency. In OFDM-IM, by selecting a number of subcarriers as active subcarriers to carry constellation symbols, the indices of these active subcarriers may carry ...
openaire +4 more sources
Stochastic Analysis of the Orthogonal Frequency Division Multiplexing Scheme [PDF]
, 2012 Marcelo S. Alencar +3 more
openalex +1 more source
Design and Performance of SEFDM Signals with Power Allocation [PDF]
, 2019 This work presents preliminary investigations into the use of power allocation for the multi-carrier non-orthogonal spectrally efficient frequency division multiplexing (SEFDM) signalling format.
Darwazeh, I, Ghannam, H
core