Results 21 to 30 of about 714,452 (294)
Index Modulation Techniques for Next-Generation Wireless Networks
IEEE Access, 2017 What is index modulation (IM)? This is an interesting question that we have started to hear more and more frequently over the past few years. The aim of this paper is to answer this question in a comprehensive manner by covering not only the basic ...
Ertugrul Basar +5 more
doaj +1 more source
Rapidly reconfigurable optically induced photonic crystals in hot rubidium vapor [PDF]
, 2013 Through periodic index modulation, we create two different types of photonic structures in a heated rubidium vapor for controlled reflection, transmission and diffraction of light.
Cohen, Raphael +5 more
core +3 more sources
Index modulation for OFDM RadCom systems [PDF]
The Journal of Engineering, 2021 Abstract This paper studies a novel Radar and wireless communication fusion system namely, RadCom, using orthogonal frequency division multiplexing index modulation waveforms. From the communication perspective, information is conveyed not only through modulated orthogonal frequency division multiplexing subcarriers but also by the ...
Gaojian Huang +3 more
openaire +4 more sources
IEEE Access, 2017 Recent studies have proven the potential of orthogonal frequency division multiplexing with index modulation in improving the bit error rate performance and the spectral efficiency, where its performance is evaluated under the assumption of ideal ...
Asma Bouhlel +3 more
doaj +1 more source
Photonics, 2021 In this letter, we present the first attempt of active light-emitting diode (LED) indexes estimating for the generalized LED index modulation optical orthogonal frequency-division multiplexing (GLIM-OFDM) in visible light communication (VLC) system by ...
Manh Le-Tran, Sunghwan Kim
doaj +1 more source
Surface acoustic waves for acousto-optic modulation in buried silicon nitride waveguides [PDF]
, 2019 We theoretically investigate the use of Rayleigh surface acoustic waves (SAWs) for refractive index modulation in optical waveguides consisting of amorphous dielectrics.
Boller, Klaus-J. +2 more
core +3 more sources
Passive Backscatter Communication Scheme for OFDM-IM with Dynamic Carrier Activation
Sensors, 2023 Multicarrier backscattering has been proposed to improve the communication rate, but the complex circuit structure of multicarrier backscattering devices requires more power consumption, resulting in devices far away from the radio frequency (RF) source ...
Shibao Li, Rui Lu
doaj +1 more source
Optimal Mapper for OFDM With Index Modulation: A Spectro-Computational Analysis
IEEE Access, 2020 In this work, we present an optimal mapper for OFDM with index modulation (OFDM-IM). By optimal we mean the mapper achieves the lowest possible asymptotic computational complexity (CC) when the spectral efficiency (SE) gain over OFDM maximizes.
Saulo Queiroz +2 more
doaj +1 more source
IEEE Photonics Journal, 2022 This paper investigates optical orthogonal frequency division multiplexing (O-OFDM) systems with index modulation (IM) based on discrete Hartley transform (DHT) for visible light communications (VLC). An interesting trade-off between spectral efficiency (
Xian-Ying Xu, Qi Zhang, Dian-Wu Yue
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Variability of the Pulsed Radio Emission from the Large Magellanic Cloud Pulsar PSR J0529-6652 [PDF]
, 2012 We have studied the variability of PSR J0529-6652, a radio pulsar in the LMC, using observations conducted at 1390 MHz with the Parkes 64-m telescope.
Altemose, Dean +3 more
core +3 more sources