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An initial solution based on lattice reduction (LR) and a novel stopping criterion for the tabu search (TS) detection algorithm are proposed for use in multiple input multiple output (MIMO) antenna systems. LR aided-detection is performed and its result is utilised as an initial solution to the TS algorithm, while a measure of the condition of the lattice-reduced channel is used as a criterion for...
Electrical Railroads provide electric power, which can operate vehicles, via feeder wires. And the supplied current returns to the transformer substation through lines and ground net. The return current, related to signal, power and power line, and track circuit systems, is one of the most important components in the electric railway. Therefore, to prevent system faults and breakdown according to...
Recently, system innovation has been accomplished with the application of relative technologies in various fields in accordance with the development of ICT(Information & Communication Technology), and the railway field is no exception also. Especially, it is expected that the significance and effect of study to plan the enhancement in safety and operational efficiency of train operation by converging...
According to the recent replacement of mechanical and electronic devices being used in the train signal control communication of railway with ICT(Information and Communication Technology) based electronic devices which can be controlled remotely through communication networks and programmable, the safety in the process of communication directly connected with large scale casualties or economic loss...
In this paper, we present the improvement on the performance of driving part for single-phase MJ81 switch point machine which has been developed for localization. The single-phase motor's specification and reliability for speed and safety improvement of conventional line was investigated in "Development project for Speed-up on Conventional Line". We systemized the test procedure for single-phase...
Korean National Railroad is planning using the on board signaling system for putting KTX and existing equipment to a good. If we use a on-board signal mode, we can improve headway more than the classical ground signal mode but there can be places where the improvement of headway is impossible in a certain section because of physical constraints. So a new algorithm for train separation control is necessary...
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