Results 21 to 30 of about 2,209,550 (335)

Path Loss Modeling for Vehicle-to-Vehicle Communications [PDF]

open access: yesIEEE Transactions on Vehicular Technology, 2011
Vehicle-to-vehicle (V2V) communications have received increasing attention lately, but there is a lack of reported results regarding important quantities such as path loss. This paper presents parameterized path loss models for V2V communications based on extensive sets of measurement data collected mainly under line-of-sight conditions in four ...
Kåredal, Johan   +4 more
openaire   +4 more sources

Path loss models based on stochastic rays [PDF]

open access: yesIET Microwaves, Antennas & Propagation, 2007
In this paper, two-dimensional percolation lattices are applied to describe wireless propagation environment, and stochastic rays are employed to model the trajectories of radio waves. We first derive the probability that a stochastic ray undergoes certain number of collisions at a specific spatial location.
Hu, Luoquan, Yu, Han, Chen, Yifan
openaire   +2 more sources

A Stochastic Approach for Analysis of Shadowing Effects in Urban Area

open access: yesAdvances in Electrical and Electronic Engineering, 2022
5G networks are started to be deployed in urban areas in the dynamic spectrum sharing mode. Therefore, the analysis of Non-Line-of-Sight (NLOS) shadowing effects behind buildings of different heights becomes particularly important.
Saulius Japertas   +3 more
doaj   +1 more source

In-body path loss models for implants in heterogeneous human tissues using implantable slot dipole conformal flexible antennas [PDF]

open access: yes, 2011
A wireless body area network (WBAN) consists of a wireless network with devices placed close to, attached on, or implanted into the human body. Wireless communication within a human body experiences loss in the form of attenuation and absorption.
Axisa, Fabrice   +9 more
core   +1 more source

Path Loss Analysis and Transceiver Development for Human Body Communication-Based Signal Transmission for Wearable Robot Control

open access: yesIEEE Access, 2021
Human body communication (HBC) technology is attracting a lot of attention for monitoring vital data and controlling wearable robot. In this paper, we focused on electroencephalogram (EEG) signal transmission from head to wrist in the 10-60 MHz HBC band.
Wei Liao, Koki Muramatsu, Jianqing Wang
doaj   +1 more source

Experimental study of on-body radio channel performance of a compact ultra wideband antenna [PDF]

open access: yes, 2015
In this paper, on-body radio channel performance of a compact ultra wideband (UWB) antenna is investigated for body-centric wireless communications.
Abbasi, Qammer H.   +3 more
core   +1 more source

Path loss models with distance‐dependent weighted fitting and estimation of censored path loss data [PDF]

open access: yesIET Microwaves, Antennas & Propagation, 2016
Path loss models are the most fundamental part of wireless propagation channel models. Path loss is typically modelled as a (single‐slope or multi‐slope) power‐law dependency on distance plus a log‐normally distributed shadowing attenuation.
Aki Karttunen   +6 more
openaire   +1 more source

Dynamic Regressor/Ensemble Selection for a Multi-Frequency and Multi-Environment Path Loss Prediction

open access: yesInformation, 2022
Wireless network parameters such as transmitting power, antenna height, and cell radius are determined based on predicted path loss. The prediction is carried out using empirical or deterministic models.
Usman Sammani Sani   +2 more
doaj   +1 more source

Tunable n-path notch filters for blocker suppression: modeling and verification [PDF]

open access: yes, 2013
N-path switched-RC circuits can realize filters with very high linearity and compression point while they are tunable by a clock frequency. In this paper, both differential and single-ended N-path notch filters are modeled and analyzed.
Ghaffari, A.   +2 more
core   +2 more sources

The Distribution of Path Losses for Uniformly Distributed Nodes in a Circle [PDF]

open access: yes, 2008
When simulating a wireless network, users/nodes are usually assumed to be distributed uniformly in space. Path losses between nodes in a simulated network are generally calculated by determining the distance between every pair of nodes and applying a ...
Bharucha, Z., Haas, Harald
core   +2 more sources

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