Results 41 to 50 of about 52,986 (291)
A Path Loss and Shadowing Model for Multilink Vehicle-to-Vehicle Channels in Urban Intersections
Sensors, 2018 The non line-of-sight (NLOS) scenario in urban intersections is critical in terms of traffic safety—a scenario where Vehicle-to-Vehicle (V2V) communication really can make a difference by enabling communication and detection of vehicles around ...
Mikael G. Nilsson +3 more
doaj +1 more source
IET Communications, 2022 Here, the authors consider the uplink of a cellular massive multiple‐input multiple‐output (MIMO) system with maximum ratio combiner (MRC) at base stations (BSs).
Amin Radbord, Jalil S. Harsini
doaj +1 more source
PLoS ONE, 2023 This paper takes the specific environment covered by vegetation as the research object, carries out modeling and analysis, takes the large-scale fading model of wireless channel as the basis of data processing, researches the transmission law of ...
Chaoyi Zhang +5 more
doaj +2 more sources
Opportunistic Relay Selection with Cooperative Macro Diversity
EURASIP Journal on Wireless Communications and Networking, 2010 We apply a fully opportunistic relay selection scheme to study cooperative diversity in a semianalytical manner. In our framework, idle Mobile Stations (MSs) are capable of being used as Relay Stations (RSs) and no relaying is required if the direct path
Chia-Hao Yu +2 more
doaj +2 more sources
An Elevation-Aware Large-Scale Channel Model for UAV Air-to-Ground Links
MathematicsThis paper addresses the issue of existing research that fails adequately capture the spatiotemporal nonstationarity caused by the building of occlusion and flight dynamics in air-to-ground channels from unmanned aerial vehicles (UAVs) in urban scenarios.
Naier Xia, Yang Liu, Yu Yu
doaj +1 more source
Energy Optimization Algorithm in WSN Based on Shadow Fading Channel Modeling [PDF]
Jisuanji gongcheng, 2016 To improve the energy efficiency of Wireless Sensor Network(WSN),an energy utility optimization algorithm based on random probability statistics model analysis is proposed in this paper.The algorithm based on Gamma and the modified Bessel function ...
ZHANG Fei,GENG Hongqin
doaj +1 more source
Control and data channel resource allocation in OFDMA heterogeneous networks [PDF]
, 2015 This paper investigates the downlink resource allocation problem in Orthogonal Frequency Division Multiple Access (OFDMA) Heterogeneous Networks (HetNets) consisting of macro cells and small cells sharing the same frequency band.
Dianati, Mehrdad +3 more
core +2 more sources
Impact of Line-of-Sight and Unequal Spatial Correlation on Uplink MU-MIMO Systems [PDF]
, 2017 Closed-form approximations of the expected per-terminal signal-to-interference-plus-noise-ratio (SINR) and ergodic sum spectral efficiency of a multiuser multiple-input multiple-output system are presented.
Dmochowski, Pawel A. +4 more
core +2 more sources
Wireless routeing scheme for UAV-assisted access networks based on the link path loss
Journal of Information and TelecommunicationIn this work, a group of unmanned aerial vehicles (UAVs) is aimed to function as relay nodes that provide a multi-hop wireless link between ground users.
Beza Negash Getu, Ali Alnoman
doaj +1 more source
, 2009 In this paper we consider the capacity of the cognitive radio channel in different fading environments under a low interference regime. First we derive the probability that the low interference regime holds under shadow fading as well as Rayleigh and ...
Hanif, Muhammad Fainan, Smith, Peter J.
core +1 more source