摘要:
Disclosed is a sensing apparatus, a network system, and a controlling method on the basis of a satellite. A satellite-based sensing network system, comprising: a plurality of satellite transmitters that collect information on a peripheral environment and an operating state, and transmits it to peripheral satellites; a satellite wireless receiving/display device that directly receives and displays the information collected from the satellites; a ground control center that receives, stores, and analyzes the information collected from the satellites; and a management center that maintains and repairs the satellite transmitter based on the analyzed results.
摘要:
The present invention relates to a system and method of reusing radio resources capable of improving radio resource efficiency. According to an embodiment of the present invention, in a communication system including a repeater that retransmits signals transmitted from a satellite to user terminals, it is possible to reuse some of the radio resources used in a wide area coverage, such as the satellite, in a repeater coverage. Therefore, it is possible to ensure radio resources such that repeater data can be transmitted to user terminals without additional radio resources.
摘要:
A microelectronic structure includes a conductive pad on a substrate. The conductive pad includes first and second openings extending therethrough. A first conductive via on the conductive pad extends through the first opening in the conductive pad into the substrate. A second conductive via on the conductive pad adjacent the first conductive via extends through the second opening in the conductive pad into the substrate. At least one of the conductive vias may be electrically isolated from the conductive pad. Related devices and fabrication methods are also discussed.
摘要:
A method for optimizing phase factors in partial transmit sequence orthogonal frequency division multiplexing system. The method includes initializing sub-block signals by applying an initial phase factor to the sub-block signals in all sub-blocks; setting a reference peak value with a peak value of a signal formed by combining the sub-block signals; selecting a phase value that minimizes the peak value of an output signal as the phase factor of each sub-block by applying a next phase value to each sub-block signal as the phase factor, and repeating this with respect to the remaining available phase values.
摘要:
Disclosed is a communication method of a satellite mobile communication system. The communication method of a satellite mobile communication system, includes: receiving system information indicating frame intervals in which first user equipments using a satellite radio interface in commonality with a terrestrial radio interface do not perform communications from a base station; accessing the base station in the rest frame intervals other than frame intervals in which the first user equipments do not perform communications, based on the system information; transmitting the system information from the base station to second user equipments using a satellite radio interface optimized for satellite environment; and accessing the base station in the rest frame intervals based on the system information received in the second user equipments.
摘要:
A mobile satellite transmission/reception apparatus and a communications route control method using the same are disclosed. The mobile satellite transmission/reception apparatus comprises: a first antenna unit configured to receive a signal along a first communications route; a second antenna unit configured to receive a signal along a second communications route; and a data processor configured to compare cyclic redundancy check (CRC) values with respect to packet streams of signals respectively received by the first and second antenna units, and change communications route to one of the first and second communications routes if packets having the same CRC value are detected.
摘要:
The present invention relates to an antenna system mounted on a mobile vehicle. In the present invention, a power distributor and a part of a high-frequency module that includes a frequency converter are placed in an external fixed unit that is placed outside a radome. In addition, an active cooler/cooling fin, a heater, and an air circulation fan are placed at an internal bottom plane of the antenna system, and a cooling fin and cooling fan are placed at an external bottom plane of the antenna system.
摘要:
A microelectronic structure includes a conductive pad on a substrate. The conductive pad includes first and second openings extending therethrough. A first conductive via on the conductive pad extends through the first opening in the conductive pad into the substrate. A second conductive via on the conductive pad adjacent the first conductive via extends through the second opening in the conductive pad into the substrate. At least one of the conductive vias may be electrically isolated from the conductive pad. Related devices and fabrication methods are also discussed.
摘要:
Disclosed is a light emitting device module. The light emitting device module includes a first lead frame and a second lead frame electrically separated from each other, a light emitting device electrically connected to the first lead frame and the second lead frame, the light emitting device includes a light emitting structure having a first conduction type semiconductor layer, an active layer, and a second conduction type semiconductor layer, a dam disposed at the peripheral area of the light emitting device, a resin layer surrounding the light emitting device and disposed at the inner area of the dam, and a reflective member disposed at the peripheral area of the dam and including an inclined plane formed on at least one side surface thereof.
摘要:
The present invention relates to a graft copolymer including a polysaccharide as a main chain and a phosphorylcholine analogous group-containing monomer as a side chain, and a composition for skin and hair care including the copolymer as an active ingredient. The graft copolymer according to the present invention exhibits more improved moisturizing capacity and better biocompatibility than the existing polysaccharide-based graft copolymer by introducing a phosphorylcholine analogous group-containing compound, and accordingly, the composition for hair and skin care including the same also has improved moisturizing capacity, protection capacity of damaged hair, skin affinity, a skin barrier function, and the like.