[HTML][HTML] Spectrum cartography techniques, challenges, opportunities, and applications: A survey

YS Reddy, A Kumar, OJ Pandey… - Pervasive and Mobile …, 2022 - Elsevier
The spectrum cartography finds applications in several areas such as cognitive radios,
spectrum aware communications, machine-type communications, Internet of Things …

A survey on high-speed railway communications: A radio resource management perspective

S Xu, G Zhu, B Ai, Z Zhong - Computer Communications, 2016 - Elsevier
High-speed railway (HSR) communications will become a key feature supported by
intelligent transportation communication systems. The increasing demand for HSR …

A survey of wireless communication technologies & their performance for high speed railways

S Banerjee, M Hempel, H Sharif - 2016 - digitalcommons.unl.edu
Abstract High Speed Railway (HSR) provides its customers not only safety, security, comfort
and on-time commuting, but also a fast transportation alternative to air travel or regular …

Transmit power minimization and base station planning for high-speed trains with multiple moving relays in OFDMA systems

H Ghazzai, T Bouchoucha, A Alsharoa… - IEEE Transactions …, 2016 - ieeexplore.ieee.org
A high-speed railway system equipped with moving relay stations placed on the middle of
the ceiling of each train wagon is investigated. The users inside the train are served in two …

RSRP-based Doppler shift estimator using machine learning in high-speed train systems

T Kim, K Ko, I Hwang, D Hong, S Choi… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
In the fifth-generation (5G) high-speed train (HST) system operating in the millimeter-wave
(mmWave) band, a much higher Doppler shift occurs. Doppler shift severely degrades …

Distributed antenna system-based millimeter-wave mobile broadband communication system for high speed trains

J Kim, IG Kim - 2013 International Conference on ICT …, 2013 - ieeexplore.ieee.org
This paper proposes a distributed antenna system (DAS)-based millimeter-wave mobile
broadband communication system for HSTs in order to meet the growing demand of high …

Radio environment map-aided Doppler shift estimation in LTE railway

Z Hou, Y Zhou, L Tian, J Shi, Y Li… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
Due to the high mobility of high-speed trains (HSTs), Doppler shift estimation has been a big
challenge for HSTs. In this paper, we consider an orthogonal frequency-division multiplexing …

Hyperloop communications: Challenges, advances, and approaches

W Hedhly, O Amin, B Shihada… - IEEE Open Journal of …, 2021 - ieeexplore.ieee.org
High-speed rail (HSR) communication has always been an attractive research topic with the
continuous progress of transportation systems and communication technologies. Recently …

Doppler shift estimation for millimeter-wave communication systems on high-speed railways

C Zhang, G Wang, M Jia, R He, L Zhou, B Ai - IEEE Access, 2018 - ieeexplore.ieee.org
The millimeter-wave (mmWave) technology is one possible solution to addressing the
explosive requirements for mobile data access on high-speed railways (HSRs). However …

Practical issues for spectrum management with cognitive radios

SM Dudley, WC Headley, M Lichtman… - Proceedings of the …, 2014 - ieeexplore.ieee.org
The policy of permanently assigning a frequency band to a single application has led to
extremely low utilization of the available spectrum. Cognitive radio, with its ability to be both …