Results 81 to 90 of about 17,699 (203)
Measurement and Statistical Analysis of Distinguishable Multipaths in Underground Tunnels
International Journal of Antennas and Propagation, 2020 Compared with the line-of-sight (LOS) condition, the multipath effect is more serious in the non-line-of-sight (NLOS) condition. Therefore, the LOS and NLOS identification is necessary for the multipath analysis of signal propagation.
Junchang Sun +4 more
doaj +1 more source
Accurate Closed‐Form Approximation for the Sum of Beaulieu–Xie Variables
Electronics Letters, Volume 62, Issue 1, January/December 2026.The distribution of the sum of Beaulieu‐Xie random variables is critical for analysing the performance of diversity techniques, such as equal‐gain combining (EGC), in communication environments characterised by multiple line‐of‐sight and non‐line‐of‐sight components, where fading can be modelled using the Beaulieu‐Xie distribution.
Ayush Madhan‐Sohini +3 more
wiley +1 more source
An Indoor Robust Localization Algorithm Based on Data Association Technique
Sensors, 2020 As a key technology of the Internet of Things, wireless sensor network (WSN) has been used widely in indoor localization systems. However, when the sensor is transmitting signals, it is affected by the non-line-of-sight (NLOS) transmission, and the ...
Long Cheng +3 more
doaj +1 more source
IET Intelligent Transport Systems, Volume 20, Issue 1, January/December 2026.This paper introduces a stochastic geometry‐based analytical framework to evaluate and enhance communication reliability and road safety in connected autonomous vehicles (CAVs). By modeling roads using Poisson Line Processes and vehicle distributions with Poisson Point Processes, the framework enables accurate assessment of key performance metrics like
Anjum Mohd Aslam +2 more
wiley +1 more source
Uplink Spectral Efficiency of Massive MIMO with Spatially Correlated Rician Fading
, 2018 This paper considers the uplink (UL) of a multi-cell Massive MIMO (multiple-input multiple-output) system with spatially correlated Rician fading channels.
Björnson, Emil +2 more
core +1 more source
A 3D Non‐Stationary Wideband GBSM for Low‐Altitude UAV Channels in Rail Environments
IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.This paper presents a three‐dimensional (3D) wideband non‐stationary Geometry‐Based Stochastic Channel Model (GBSM) for low‐altitude unmanned aerial vehicle (UAV) communications. Distinct from existing modelling frameworks, the proposed model integrates air‐to‐air (A2A) and air‐to ground (A2G) scenarios into a generalised channel model. Moreover, a two‐
Cheng Li +5 more
wiley +1 more source
IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.In this paper, a 3D multi‐source GBSM model is proposed for the vacuum tube scenario using LCX. By equating the periodic slots to multiple magnetic dipole antennas, the electric field distribution of LCX is deduced, and the CIR expression is derived. Based on this, the multi‐link spatial‐temporal correlations, including the spatial CCF and temporal ACF,
Kai Wang +4 more
wiley +1 more source
Pengaruh Fading Lintasan Jamak Terhadap Performansi High Speed Downlink Packet Access (Hsdpa) [PDF]
, 2013 HSDPA adalah sebuah teknologi komunikasi bergerak yang berteknologi 3,5G (third and half generation) yang termasuk dalam keluarga teknologi High-Speed Packet Acces (HSPA) yang mampu meningkatkan kecepatan transfer data mencapai 14,4 Mbps untuk download ...
Ir. Sigit Kusmaryanto, M.Eng., Aindyta Ayu Pradani., Dr. Ir. Sholeh Hadi pramono, MS
core
IET Networks, Volume 15, Issue 1, January/December 2026.This paper proposes a reconfigurable intelligent surface‐based deep reinforcement learning MAC (RIS‐DRL‐MAC) protocol for terahertz mesh networks. By embedding RIS perception into the MAC decision loop and using a distributed TD3 algorithm, the proposed scheme achieves a cross‐layer optimisation of beam direction, access timing and RIS phase control ...
Wenjian Zhang, Ping Li
wiley +1 more source
A Multiple Scattering Channel Model for Ultraviolet Signal Propagation in the Atmosphere
IET Optoelectronics, Volume 20, Issue 1, January/December 2026.We propose an accurate multiple scattering channel model for ultraviolet (UV) signal that propagates in the atmosphere with incorporating the variation of the refractive index structure parameter with altitude and the relative height between UV transmitter and receiver that are often ignored by the previous works.
Xianrui Jian, Qingfeng Wu
wiley +1 more source