Multipath Extraction Based UL/DL Channel Estimation for FDD Massive MIMO-OFDM Systems
IEEE Access, 2021 In this paper, we propose a multipath extraction based uplink/downlink channel estimation scheme for wideband massive multiple-input multiple-output (MIMO) systems, where orthogonal frequency division multiplexing (OFDM) is adopted and the beam squint ...
Wei Ji, Feng Zhang, Ling Qiu
doaj +1 more source
Multiuser Diversity Over Parallel and Hybrid FSO/RF Links and Its Performance Analysis
IEEE Photonics Journal, 2016 Hybrid free-space optical (FSO)/radio-frequency (RF) communication has emerged as an effective solution for high-data-rate wireless transmission. In this paper, multiuser diversity over parallel and hybrid FSO/RF links is discussed.
Li Chen, Weidong Wang, Chi Zhang
doaj +1 more source
Scattering regimes for underwater optical wireless communications using Monte Carlo simulation [PDF]
, 2018 Optical wireless communications has shown tremendous potential for underwater applications as it can provide higher bandwidth and better security compared to acoustic technologies.
Ahmad, Zahir +3 more
core +3 more sources
Deep Learning Framework for Wireless Systems: Applications to Optical Wireless Communications
, 2018 Optical wireless communication (OWC) is a promising technology for future wireless communications owing to its potentials for cost-effective network deployment and high data rate.
Lee, Hoon +3 more
core +1 more source
Optical wireless communications for micromachines
SPIE Proceedings, 2006 A key challenge for wireless sensor networks is minimizing the energy required for network nodes to communicate with each other, and this becomes acute for self-powered devices such as 'smart dust'. Optical communications is a potentially attractive solution for such devices.
O'Brien, D +6 more
openaire +2 more sources
Bit error performance of diffuse indoor optical wireless channel pulse position modulation system employing artificial neural networks for channel equalisation [PDF]
, 2009 The bit-error rate (BER) performance of a pulse position modulation (PPM) scheme for non-line-of-sight indoor optical links employing channel equalisation based on the artificial neural network (ANN) is reported.
Angelova, Maia +2 more
core +1 more source
A study of discrete wavelet transform based denoising to reduce the effect of artificial light interferences for indoor optical wireless communication [PDF]
, 2010 The optical power penalty (OPP) due to the artificial light interferences (ALIs) can be significantly high in an indoor optical wireless communication (OWC) channel making such link practically infeasible.
Angelova, Maia +2 more
core +1 more source
Measuring the Gap Between the Maximum Predictability and Prediction Accuracy of Human Mobility
IEEE Access, 2020 It has been claimed that human mobility is highly predictable and an upper bound of 93% predictability is achievable. However, there is a significant gap between the upper bound of predictability and the actual prediction accuracy in many data sets. This
Junyao Guo +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.This work develops 3D‐printable tribopolymer networks that can enhance triboelectric performance under high humidity environments. Polar hydrophilic functional groups and incorporation of zwitterionic monomers promote bound‐water–dominated interfacial polarization thereby increasing electrical outputs.
Linguangze Zhuo +8 more
wiley +1 more source
BER and outage probability of DPSK subcarrier intensity modulated free space optics in fully developed speckle. [PDF]
, 2009 In this paper a differential phase shift keying (DPSK) subcarrier intensity modulated (SIM) free space optical (FSO) link is considered in negative exponential atmospheric turbulence environment.
Ghassemlooy, Zabih +2 more
core +2 more sources