Results 151 to 160 of about 122,418 (183)
Some of the next articles are maybe not open access.
Dynamic spatial modulation for next generation networks
Physical Communication, 2019Abstract A major challenge for fifth generation (5G) wireless communication, which is expected to be deployed around 2020 is to provide 10 times higher spectral efficiency and energy efficiency than fourth generation (4G). Spatial modulation (SM) is a novel multiple input and multiple output (MIMO) technique, which provides an exceptional trade-off ...
Vishnu Vardhan Gudla +1 more
openaire +1 more source
Media‐based single‐symbol generalized spatial modulation
International Journal of Communication Systems, 2019SummarySingle‐symbol generalized spatial modulation (GSM) improves upon the limitation of spatial modulation (SM) by reducing the number of required transmit antennas to achieve high data rates. In this paper, we investigate the application of media‐based modulation (MBM) based on radio frequency mirrors to single‐symbol GSM, with the aim of improving ...
Segun Oladoyinbo +2 more
openaire +1 more source
Improved generalized spatial modulation via antenna selection
International Journal of Communication Systems, 2016SummaryWhen a high spectral efficiency is needed, the cost of Euclidean distance‐based antenna selection for spatial modulation (EDAS‐SM) in terms of hardware, size, and computational complexity is significantly increased because of the large transmit antenna array required.
Narushan Pillay, Hongjun Xu
openaire +1 more source
AEU - International Journal of Electronics and Communications, 2019
Abstract Spatial Modulation techniques (SMTs) offer an exceptional trade-off between spectral and energy efficiencies. In this work, we propose a new SMT termed as permutation index-quadrature spatial modulation (PI-QSM), aiming for enhanced spectral efficiency and better average bit error rate (ABER) performance compared to rival SMTs.
Vishnu Vardhan Gudla +1 more
openaire +1 more source
Abstract Spatial Modulation techniques (SMTs) offer an exceptional trade-off between spectral and energy efficiencies. In this work, we propose a new SMT termed as permutation index-quadrature spatial modulation (PI-QSM), aiming for enhanced spectral efficiency and better average bit error rate (ABER) performance compared to rival SMTs.
Vishnu Vardhan Gudla +1 more
openaire +1 more source
Integer-Forcing Detection of Generalized Spatial Modulation
2018Generalized spatial modulation (GSM) activates more transmit antennas than spatial modulation to increase the spectral efficiency. Although the maximum likelihood (ML) detector is able to achieve the optimal performance, its exhaustive search leads to intractable computational complexity.
Guoquan Li +6 more
openaire +1 more source
Nondiffracting interference patterns generated with programmable spatial light modulators
Applied Optics, 1996Nondiffracting beams are of interest for optical metrology applications because the size and shape of the beams do not change as the beams propagate. We have created a generating pattern consisting of a linear combination of two nondiffracting patterns.
J A, Davis, E, Carcole, D M, Cottrell
openaire +2 more sources
Fully Generalized Optical Spatial Modulation
2023 Opto-Electronics and Communications Conference (OECC), 2023Yinan Zhao, Chen Chen, Lin Zeng, Min Liu
openaire +1 more source
Generating arbitrary photoacoustic fields with a spatial light modulator
Optics Letters, 2019Ultrasound fields have broad applications in imaging, sensing, medical therapy, etc. In these applications, it is of great importance to generate desired ultrasound fields. The generation of arbitrary ultrasound fields is challenging using phased array transducers or a monolithic acoustic hologram. In this work, by taking advantage of the photoacoustic
Tian Wei +6 more
openaire +2 more sources
Diffraction-free beams generated with programmable spatial light modulators
Applied Optics, 1993Diffraction-free beams are generated by the use of diffractive optical elements written on a spatial light modulator (SLM). By alteration of the pattern placed on the SLM, the axis of propagation can be both shifted laterally and rotated. We present experimental results obtained by use of a magneto-optic SLM.
J A, Davis, J, Guertin, D M, Cottrell
openaire +2 more sources
Programmable coherent source arrays generated by spatial light modulators
Applied Optics, 1992Programmable coherent source arrays are generated by using addressable liquid-crystal spatial light modulators and two-dimensional arrays of Fresnel lenses. The modulators used are an optically addressed liquid-crystal light valve, a matrix-addressed pixelated display, and two devices that have individually addressable elements with specially designed ...
S F, Habiby +4 more
openaire +2 more sources