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Recently, data usage of end users are deeply increasing in the moving vehicles, such as subway, train and bus. In order to meet this requirement, we are designing and developing the 5th generation mobile backhaul system in ETRI (Electronics and Telecommunications Research Institute). This system is MHN-E (Mobile Hotspot Network — Enhanced) system, which support maximum 10Gbps with up to 500km/h. In...
In spite of the high need for high data rate for users, there has been no wireless mobile backhaul system supporting 10Gbps data rate for fast moving group vehicle such as a subway and a train. In ETRI, we have been designing and developing MHN-E (Mobile Hotspot Network — Enhanced) system to meet the criteria which is focused on fast moving vehicle. MHN-E system supports up to 10Gbps downlink data...
The need of high speed data rate services at mobile group vehicles moving at high speed has been on the increase. ETRI (Electronics and Telecommunications Research Institute) has been designing and developing a new moving wireless backhaul system, Mobile Hotspot Network (MHN) system, which can support over 1Gbps data rate services for mobile group vehicles running at high speed up to 500km/h such...
The need of high speed data rate services at mobile group vehicles moving at high speed has been on the increase. ETRI (Electronics and Telecommunications Research Institute) has been designing and developing a new moving wireless backhaul system, Mobile Hotspot Network (MHN) system, which can support over 1Gbps data rate services for mobile group vehicles running at high speed up to 500km/h such...
This report presents performance evaluation of a prototype of a millimeter-wave-based communication system in tunnel environments. The prototype could give 500 Mbps of data rate throughout 1.1 km on a straight route. The data rate dropped from 500 Mbps to 100 Mbps while a receiver of the prototype passed by 530-m point on a curved route. The results can be used to determine appropriate locations of...
Currently, the need of high speed data rate services at mobile group vehicles moving at high speed has been increased. In ETRI (Electronics and Telecommunications Research Institute), we have been designing and developing a new wireless mobile backhaul system, Mobile Hotspot Network (MHN) system, which can support over 1Gbps data rate services for mobile group vehicles moving at high speed over 400km/h...
Recently, according to the survey, one of the most frequent place to use mobile internet is the moving vehicle, such as bus, subway and train. Therefore, the high speed data rate services for mobile group vehicles moving at high speed are severely required. We design and develop a new system, which can support upto 2.5Gbps data rate services for mobile group vehicles moving at high speed over 400km/h,...
A downlink control channel is proposed for mobile backhaul in hierarchical telecommunications network. The mobile backhaul will suffer from degradation of performance caused by fast variation of channel. To cope with this deterioration, we propose to use FDM-type control channel and precoding 4 antennas for beamforming. The first OFDM symbol is common control field which having resource index of the...
Currently, the high speed data rate services for mobile group vehicles moving at high speed are acutely required. In ETRI (Electronics and Telecommunications Research Institute), we have been developing the Mobile Hotspot Network (MHN) system that can support over 1.2Gbps data rate services for mobile group vehicles moving at high speed over 400km/h, e.g., KTX, TGV, etc. In this paper, new frame structures...
3GPP (3rd Generation Partnership Project) LTE (Long Term Evolution) Advanced standards are currently under way, where 4×4 MIMO (Multiple Input Multiple Output) scheme is the minimum structure. One of the best solutions to support the maximum data rate transmission is to adopt a MIMO scheme, especially spatial multiplexing mode, which means that each antenna port can transmit separate data. To realize...
In order to migrate toward 4G, studies on 3G LTE (Long Term Evolution) have been announced recently in the 3GPP(3rd Generation Partnership Project) and standardization is under way. Therefore, 3G LTE (Long Term Evolution) systems have been designed and developed over many countries. We also have been developing a 3G LTE testbed system at ETRI. 3G LTE system is adopting OFDM (Orthogonal Frequency Division...
In the field of wireless mobile communications, various types of 4G(4th generation) systems have been designed and developed over many countries. We also have been developing the HMm (high-speed multimedia mobile) 4G testbed system with the specification of ECSUS (enhanced cellular system for ubiquitous service) that is designed at ETRI (Electronics and Telecommunications Research Institute). The...
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