Results 31 to 40 of about 5,997,708 (388)
Hierarchical Multi-Functional Layered Spatial Modulation
IEEE Access, 2018 In pursuit of optimal index modulation -aided multiple-input multiple-output (MIMO) systems, where information is implicitly conveyed by relying on the on/off mechanism of the system's components in addition to the classical amplitude, phase, or ...
Ibrahim A. Hemadeh +2 more
doaj +1 more source
Enhanced Coordinate Interleaved OFDM With Index Modulation
IEEE Access, 2017 Orthogonal frequency-division multiplexing with index modulation (OFDM-IM) has attracted much attention in recent years. In OFDM-IM, the information bits of a block are generally divided into several subblocks, each of which is further split into two ...
Yun Liu +5 more
doaj +1 more source
AFDM Chirp-Permutation-Index Modulation with Quantum-Accelerated Codebook Design [PDF]
Asilomar Conference on Signals, Systems and ComputersWe describe a novel index modulation (1M) scheme exploiting a unique feature of the recently proposed affine frequency division multiplexing (AFDM) in doubly-dispersive (DD) channels.
H. Rou +4 more
semanticscholar +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
Frequency-Shift Chirp Spread Spectrum Communications With Index Modulation [PDF]
IEEE Internet of Things Journal, 2021 This article introduces a novel frequency-shift chirp spread spectrum (FSCSS) system with index modulation (IM). By using combinations of orthogonal chirp signals for message representation, the proposed FSCSS with index modulation (FSCSS-IM) system is ...
M. Hanif, Ha H. Nguyen
semanticscholar +1 more source
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
Periodic index-modulated plasma waveguide
Optics Express, 2009 We demonstrate a wire-obstructed cluster flow technique for making periodically modulated plasma waveguides in hydrogen, nitrogen, and argon with sharp, stable voids as short as 50 microm with a period as small as 200 microm. These gaps persist as the plasma expands for the full lifetime of the waveguide.
B D, Layer +4 more
openaire +2 more sources
A genetic algorithm based method of optimizing dispersion matrix for RDSM system
Dianxin kexue, 2022 Rectangular differential spatial modulation (RDSM) is a multi-antenna incoherent modulation technology with high spectral efficiency, low power consumption, and zero-overhead for channel estimation.RDSM is especially suitable for 6G communication systems,
Peng ZHANG, Xiaoping JIN, Dongxiao CHEN
doaj
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
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