摘要:
SRAM cells having landing pads in contact with upper and lower cell gate patterns, and methods of forming the same are provided. The SRAM cells and the methods remove the influence resulting from structural characteristics of the SRAM cells having vertically stacked upper and lower gate patterns, for stably connecting the patterns on the overall surface of the semiconductor substrate. An isolation layer isolating at least one lower active region is formed in a semiconductor substrate of the cell array region. The lower active region has two lower cell gate patterns. A body pattern is disposed in parallel with the semiconductor substrate. The body pattern is formed to confine an upper active region, which has upper cell gate patterns on the lower cell gate patterns. A landing pad is disposed between the lower cell gate patterns. A node pattern is formed to simultaneously contact the upper cell gate pattern and the lower cell gate pattern.
摘要:
In multiuser Multiple-Input Multiple-Output (MIMO) systems in which a base station performs scheduling on the basis of channel information fed back from a plurality of terminals, the user scheduling method of the present invention includes calculating a metric for scheduling the users using the channel information, selecting one of at least two preinstalled scheduling schemes according to the metric, and performing the scheduling with the selected scheduling scheme. The user scheduling method of the present invention performs scheduling with one of TDMA- and STMA-based scheduling schemes which show maximum capacity in different channel environments, such that the system capacity can be optimally maintained even when the channel environment is changed.
摘要:
The present invention discloses that fractions of Asiasari Radix extract have the ability to induce neuroprotection against AMPA (-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid)-induced damages in brain cells as well as stimulation of memory.
摘要:
Semiconductor integrated circuit devices having single crystalline thin film transistors and methods of fabricating the same are provided. The semiconductor integrated circuit devices include an interlayer insulating layer formed on a semiconductor substrate and a single crystalline semiconductor plug penetrating the interlayer insulating layer. A single crystalline semiconductor body pattern is provided on the interlayer insulating layer. The single crystalline semiconductor body pattern has an elevated region and contacts the single crystalline semiconductor plug. The method of forming the single crystalline semiconductor body pattern having the elevated region includes forming a sacrificial layer pattern covering the single crystalline semiconductor plug on the interlayer insulating layer. A capping layer is formed to cover the sacrificial layer pattern and the interlayer insulating layer, and the capping layer is patterned to form an opening which exposes a portion of the sacrificial layer pattern. Subsequently, the sacrificial layer pattern is selectively removed to form a cavity in the capping layer, and a planarized single crystalline semiconductor body pattern is formed to fill the cavity and the opening.
摘要:
SRAM cells having landing pads in contact with upper and lower cell gate patterns, and methods of forming the same are provided. The SRAM cells and the methods remove the influence resulting from structural characteristics of the SRAM cells having vertically stacked upper and lower gate patterns, for stably connecting the patterns on the overall surface of the semiconductor substrate. An isolation layer isolating at least one lower active region is formed in a semiconductor substrate of the cell array region. The lower active region has two lower cell gate patterns. A body pattern is disposed in parallel with the semiconductor substrate. The body pattern is formed to confine an upper active region, which has upper cell gate patterns on the lower cell gate patterns. A landing pad is disposed between the lower cell gate patterns. A node pattern is formed to simultaneously contact the upper cell gate pattern and the lower cell gate pattern.
摘要:
Provided are a mobile communication apparatus including an antenna array and a mobile communication method. The mobile communication apparatus has a base station and a mobile station. The mobile station measures the downlink characteristics, detects physical space information and approximate long-term information, produces short-term informatio, transforms the short-term information and the physical space information into a feedback signal, and transmits the feedback signal to the base station. The base station receives the feedback signal, extracts weighted information, beamforms dedicated physical channel signals, combines pilot channel signals with the result of the beamforming, and transmits the results of the combinations to the mobile station via the antenna array. The physical space information denotes space information about the location of the mobile station with respect to the base station, and the approximate long-term information denotes long-term information. Accordingly, degradation of the performance of communications caused by a great amount of information to be fed back station can be prevented while keeping a beamforming gain.
摘要:
Disclosed is a method for providing first and second interleaved bit streams to a modulator in order to transmit the first and second interleaved bit streams through at least two antennas in a mobile communication system. An encoder encodes a transmission data stream into a first bit stream with first priority and a second bit stream with second priority being lower than the first priority. An interleaver interleaves the first and second bit streams into the first and second interleaved bit streams. The modulator modulates the first and second interleaved bit streams. The method comprises distributing the first interleaved bit stream into first assignment bit streams for the respective antennas and the second interleaved bit stream into second assignment bit streams for the respective antennas according to power condition information of the respective antennas; and generating combination bit streams by combining the first assignment bit streams and the second assignment bit streams, distributed according to the respective antennas, and providing the generated combination bit streams to the modulator.
摘要:
Disclosed a transmission apparatus in a CDMA mobile communication system. Transmission frames each have a plurality of time slots, and each of the time slots includes two data parts having the same length, a midamble intervening between the data parts, and a guard period for dividing the consecutive time slots. The transmission apparatus modulates the frames into a radio signal with a modulation signal and transmits the modulated radio signal using a plurality of antennas. A power amplifier amplifies the radio signal. A controller generates a switching control signal in a guard period of time slots of a frame associated with the radio signal amplified by the power amplifier. A switch switches the amplified radio signal from the power amplifier between a first and a second antenna in response to the switching control signal.
摘要:
An apparatus and method for generating control signals to regulate gain levels of color signals based on color data of which color gains are not regulated and color data of which color gains are regulated. The apparatus and method include generating first control signals to regulate the gain levels of the plurality of color signals based on a plurality of color signals of which gain levels are not regulated, calculating correction values to correct the first control signals based on a plurality of color signals of which gain levels are regulated, and generating second control signals which are results of correcting the first control signals by the correction values.
摘要:
A method of fabricating an optical fiber preform using an overcladding device and an optical-fiber-drawing method are provided. The overcladding device includes first and second chucks, an annular oxygen-hydrogen burner, a furnace, and a carriage for reciprocating between the first and second chucks positioned on a shelf, and a vacuum pump coupled to one of the chucks. According to the preform-fabricating method, primary and secondary preforms fixed to the first and second chucks are leveled respectively. The primary preform is inserted coaxially into the secondary preform. The secondary preform is pre-heated using the furnace and heated using the oxygen-hydrogen burner, thus softening the preforms. A first end of the secondary preform is sealed by heating the first end using the furnace, and the primary and secondary preforms are collapsed by forming a negative-pressure vacuum state inside the secondary preform through a second end of the secondary preform.