Results 31 to 40 of about 43,924 (217)

Ultra-Wideband Channel Modeling for Intravehicle Environment

open access: yesEURASIP Journal on Wireless Communications and Networking, 2009
With its fine immunity to multipath fading, ultra-wideband (UWB) is considered to be a potential technique in constructing intravehicle wireless sensor networks.
Talty Timothy, Niu Weihong, Li Jia
doaj   +2 more sources

Target Detection in Low Grazing Angle with Adaptive OFDM Radar

open access: yesInternational Journal of Antennas and Propagation, 2015
Multipath effect is the main factor of deteriorating target detection performance in low grazing angle scenario, which results from reflections on the ground/sea surface.
Yang Xia   +4 more
doaj   +1 more source

Wideband performance comparison between the 40 GHz and 60 GHz frequency bands for indoor radio channels [PDF]

open access: yes, 2019
When 5G networks are to be deployed, the usability of millimeter-wave frequency allocations seems to be left out of the debate. However, there is an open question regarding the advantages and disadvantages of the main candidates for this allocation: The ...
Cuinas, Inigo   +4 more
core   +1 more source

Robust range‐only beacon mapping in multipath environments

open access: yesETRI Journal, 2019
This study proposes a robust range‐only beacon mapping method for registering the locations of range‐only beacons automatically. The proposed method deals with the multipath propagation of signals from range‐only beacons using the range‐only measurement ...
Byungjae Park, Sejin Lee
doaj   +1 more source

Experimental Analysis of Spatial Modulation Systems in Mixed LOS/NLOS Scenarios

open access: yesIEEE Access, 2022
Spatial modulation (SM) as a multiple-input multiple-output (MIMO) technique is a solution suitable which offers, with low system complexity and cost, improved spectral efficiency compared to single-input-single-output (SISO) systems.
Yanni Zhou   +2 more
doaj   +1 more source

3-D Statistical Channel Model for Millimeter-Wave Outdoor Mobile Broadband Communications

open access: yes, 2015
This paper presents an omnidirectional spatial and temporal 3-dimensional statistical channel model for 28 GHz dense urban non-line of sight environments.
Rappaport, Theodore S.   +1 more
core   +1 more source

An Iterative Receiver for OFDM With Sparsity-Based Parametric Channel Estimation [PDF]

open access: yes, 2018
In this work we design a receiver that iteratively passes soft information between the channel estimation and data decoding stages. The receiver incorporates sparsity-based parametric channel estimation.
Badiu, Mihai-Alin   +3 more
core   +2 more sources

Metasurface‐Enabled Active‐Like Passive Radar

open access: yesAdvanced Science, EarlyView.
A programmable space‐time‐coding metasurface embeds distinct spatiotemporal tags into ambient wireless signals, allowing passive radar to operate in an active‐like manner. By enabling code‐correlated reconstruction under interference, the approach supports robust real‐time UAV tracking in complex environments and points to intelligent, low‐power ...
Mingyi Li   +7 more
wiley   +1 more source

Online multipath convolutional coding for real-time transmission [PDF]

open access: yes, 2012
Most of multipath multimedia streaming proposals use Forward Error Correction (FEC) approach to protect from packet losses. However, FEC does not sustain well burst of losses even when packets from a given FEC block are spread over multiple paths.
Lacan, Jerome   +2 more
core   +2 more sources

A Statistical Analysis of Multipath Interference for Impulse Radio UWB Systems

open access: yes, 2014
In this paper, we develop a statistical characterization of the multipath interference in an Impulse Radio (IR)-UWB system, considering the standardized IEEE 802.15.4a channel model.
Azou, Stéphane   +3 more
core   +2 more sources

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