Effective deployment of cooperative moving relay nodes in a high speed train

Laiyemo, Ayotunde O.; Pennanen, Harri; Pirinen, Pekka

doi:10.1109/wd.2016.7461448

Cited by 6 publications

(2 citation statements)

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“…This article focuses on a load-stress test specifically designed for the twohop architecture that enables on-board connectivity in high-speed trains. In [23] the authors propose a mechanism to efficiently select the appropriate number of mobile relay nodes and receive antennas in relation to the throughput performance and capital expenses in the train. According to the authors, the use of multiple mobile relay nodes and antennas on the high speed train enables spatial multiplexing gains and reduces the handover failure rate since multiple relay nodes will not perform handover processes at the same time.…”

Section: Qos and Performance Studiesmentioning

confidence: 99%

Mobile relays for urban rail transportation systems

et al. 2020

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Qos and Performance Studiesmentioning

confidence: 99%

Mobile relays for urban rail transportation systems

et al. 2020

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“…In this paper, we consider a two-hop network architecture, where the communication link is divided into a BS-HST link and a HST-onboard link. We focus on the BS-HST link, since the BS-HST link is the main bottleneck in the whole communication link [9]. The HST consists of moving relay nodes (MRNs) with antenna arrays on the roof top and we assume LOS propagation, since the propagation characteristics of most railway environments exhibit strong LOS component with few scatterers.…”

Section: Introductionmentioning

confidence: 99%

Higher frequency band beamforming scheme for high speed train

Laiyemo

Luoto

Pirinen

2017

2017 IEEE Vehicular Networking Conference (VNC)

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With the increasing popularity of high speed trains (HSTs) and the traffic forecast for future cellular networks, the need to provide very high data rates using higher frequency bands (HFBs) for train passengers is becoming crucial. In this paper, we present a timer-based beamforming selection algorithm for HST, which exploits the prior knowledge of the position and direction of the HST. A sequential and hierarchical codebook is designed based on the array response vectors and linked to the line-of-sight (LOS) angle-of-arrival/departure base station (BS)-HST link. The effect of velocity feedback errors on the throughput performance was analyzed. The antenna deactivation and the sub-array approaches were considered to mitigate the effect of velocity feedback errors. Evaluation of our proposed beamforming scheme indicates a close performance to the optimal singular value decomposition (SVD) scheme when no velocity feedback error occurs and with the occurrence of velocity feedback errors, the sub-array approach proved to be an efficient way to reduce the effect of the errors.

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