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With the development of Time Division Long Term Evolution (TD-LTE) system, the TD-LTE base station's density is increasing rapidly. The working spectrum of Compass Navigation Satellite System (COMPASS, also called BeiDou Navigation Satellite System) is adjacent to TD-LTE system. Because the signal received by COMPASS Equipment (CE) is very weak, large frequency isolation between TD-LTE downlink and...
We consider the random access channel (RACH) of a multi-beam satellite system with universal frequency reuse. We benefit from the spatial diversity and the strong directivity of multiple antennas at the satellite to resolve contentions and perform channel estimation. We propose two approaches to detect active satellite terminals (ST) and estimate the channel coefficients of some or all the colliding...
Water is one of the most important natural elements on earth. Water quality directly and indirectly influences human lives and development. In this paper, a GIS-based system is designed to assist water resources professionals in making economical and efficient decision. GIS and remote sensing techniques are effectively used to replace, complement and supplement data collection in various facets of...
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