摘要:
A method of signal transmission based on differentially quantized channel information in a multi-antenna wireless communication system which can transmit signal to multiple mobile stations simultaneously through multiple transmit antennas includes a main codebook reporting step of each mobile station for quantizing channel correlation information (CCI) using a main-codebook and reporting an index of the main codebook, which corresponds to the quantized CCI, to a base station. A sub-codebook reporting step of each mobile station for quantizing the change of the CCI between the quantization interval using a sub-codebook and reporting an index of the sub-codebook, which corresponds to the quantized CCI change, to a base station. A multi-user eigen-beam transmission step of the base station for generating multiple eigen-beams using the index of the main-codebook or sub-codebook reported from mobile stations and transmitting them to multiple users simultaneously.
摘要:
A system and a method for detecting the eyes of a driver of a vehicle using a single camera. The method includes determining a set of positional parameters corresponding to a driving seat of the vehicle. The camera is positioned at a pre-determined location inside the vehicle, and a set of parameters corresponding to the camera is determined. The location of the driver's eyes is detected using the set of positional parameters, an image of the driver's face and the set of parameters corresponding to the camera.
摘要:
A system and method for automatically adjusting the viewing angle of both side rear-view mirrors on a vehicle when the vehicle is traveling on a hill. The system estimates the slope of the hill, and uses the estimated slope to determine a corrected viewing angle of the rear-view mirrors. Depending on whether the vehicle is traveling uphill or down-hill, would depend on which direction the rear-view mirrors will be adjusted.
摘要:
Mirrors on a motor vehicle are adjusted by monitoring the position of a first, preferably manually adjusted, mirror and adjusting the position of additional mirrors based on the monitored position of the first one of the mirrors.
摘要:
A method of producing a biomaterial measuring device is disclosed. The method includes forming a plurality of reactions elements, to which an assay reagent is applied, on a first substrate, cutting the resulting first substrate in a unit of individual reaction element, and attaching a first substrate piece, which is formed by cutting the resulting first substrate in the unit of individual reaction element, to a predetermined portion of a second substrate. In the biomaterial measuring device, since a material cost in minimized and it is easy to automate production, it is possible to reduce a production, it is possible to reduce a production cost.
摘要:
A semiconductor device and method of fabricating a semiconductor device are provided. The method includes forming a gate trench in a semiconductor substrate to define source/drain regions. The source/drain regions are separated from each other by the gate trench, and the semiconductor substrate is exposed through the gate trench. The semiconductor substrate has impurities of a first conductivity type. The source/drain regions have impurities of a second conductivity type different from the first conductivity type. The concentration of the second conductivity type impurities increases as the impurities approach the surfaces of the source/drain regions. A differential gate dielectric layer is formed along the surfaces of the source/drain regions and the semiconductor substrate exposed through the gate trench. A gate electrode filling the gate trench is formed. The differential gate dielectric layer has a first thickness between the gate electrode and the semiconductor substrate and has a second thickness greater than the first thickness between the gate electrode and the source/drain regions.
摘要:
An apparatus and method for uplink (UL) power control in a broadband wireless access (BWA) communication system are provided. In a communication method for a base station (BS), the channel gain, noise power and speed of each MS are determined, and the maximum allowable power of each mobile station (MS) are calculated using the determined channel gain, noise power and speed of each MS. Because the UL power is controlled according to the speed of the MS and the distance from the BS, the method can provide higher system capacity than the conventional power adaptation scheme.
摘要:
The present invention relates to a prepolymerized catalyst for olefin polymerization, a process for polymerizing an olefin by using the catalyst and a polyolefin produced by the process, in which a Ziegler-Natta catalyst is prepolymerized sequentially using α-olefin and vinyl saturated cyclic hydrocarbon, and then an olefin is polymerized using the prepolymerized Ziegler-Natta catalyst, thereby producing a polyolefin with high yield. Therefore, the polymerized polyolefin has high Isotactic index, bulk density, and crystallinity.
摘要:
A system and method for automatically correcting the viewing angle of a rear-view mirror on a vehicle towing a trailer when the vehicle is traveling around a curve. If the dimensions of the trailer are unknown, then the corrected viewing angle is the same as the hitch angle between the vehicle and the trailer. If the dimensions of the trailer are known, then trigonometry is used to determine the corrected viewing angle. Depending on whether the road is curving to the right or to the left will determine whether the left side rear-view mirror or the right side rear-view mirror is adjusted.
摘要:
A system and method for automatically adjusting the viewing angle of both side rear-view mirrors on a vehicle when the vehicle is traveling on a hill. The system estimates the slope of the hill, and uses the estimated slope to determine a corrected viewing angle of the rear-view mirrors. Depending on whether the vehicle is traveling uphill or down-hill, would depend on which direction the rear-view mirrors will be adjusted.