Abstract:
Disclosed is a receiver in a cooperative diversity system including one or a plurality of relays. The receiver includes: a detection unit configured to detect each of signals transmitted from the one or more relays, the one or more signals being generated by the one or more relays and by interleaving a signal from a transmitter; a deinterleaver configured to deinterleave each of the detected signals; a decoder configured to decode and each of the deinterleaved signals thereby to output one or more decoded signals; and an interleaver configured to interleave each of the one or more decoded signals thereby to output one or more interleaved signals, wherein the detection unit receives the one or more interleaved signals and compares them with the respective detected signals to discriminate the original signal transmitted by the transmitter.
Abstract:
Disclosed herein are an apparatus and method of performing inter-cell interference coordination in a heterogeneous network. The apparatus includes a reception unit, a determination unit, a generation unit, and a transmission unit. The reception unit receives a modulation and coding scheme (MCS) level from a small cell base station in each frame. The determination unit determines a calculated MCS level based on the MCS level and an interfering signal estimated through probabilistic modeling. The generation unit generates a ratio of subframes, in which data will not be transmitted, to all subframes of a frame based on the MCS level and the calculated MCS level. The transmission unit transmits the ratio and the calculated MCS level to the small cell base station.
Abstract:
A method of driving a plasma display panel that is adaptive for improving brightness and efficiency. In the method, a sustaining pulse for sustaining a discharge of a cell selected in a sustaining interval is alternately applied to each of a sustaining electrode pair. A pulse signal synchronized with the sustaining pulse is applied to a data electrode to cause a discharge for inducing a long-path discharge between the sustaining electrode pair between any one of the sustaining electrode pair and the data electrode.
Abstract:
A plasma display panel is provided which includes a transparent electrode pair spaced by a predetermined gap within a discharge cell. Each electrode in the pair includes a head part having a constant width and/or an expanding part having a width which enlarges as it approaches the center of the discharge cell.
Abstract:
In a method of coating a photoresist, the photoresist may be provided to an upper surface of a rotating wafer. A hovering solution may be injected to an edge portion of the photoresist under a condition that the hovering solution may be hovered with respect to the edge portion of the photoresist with an air layer being interposed between the hovering solution and the edge portion of the photoresist to limit and/or prevent a bead of the photoresist from being formed on an edge portion of the upper surface of the wafer. Thus, the photoresist having a uniform thickness may be coated on the upper surface of the wafer to improve a yield of a semiconductor device by increasing an effective area of the edge portion of the wafer.
Abstract:
A channel estimation method and apparatus using a self-tracking algorithm is provided for improving channel estimation accuracy. The channel estimation apparatus of a mobile terminal includes a receiver for converting a received radio signal into a baseband signal, a match filter for converting the baseband signal into a digital signal including at least two samples, a channel estimator for buffering the samples, for analyzing multipath signals to predict a maximum power position and multipath energy, and for estimating a channel by selecting a multi-tap at the maximum power position through a slew control, an equalization controller for calculating an equalization tap gain using the multi-tap selected by the channel estimator, and an equalizer for compensating for distortion in the samples output by the channel estimator using the equalization tap gain calculated by the equalization controller.
Abstract:
A multi-layered article includes a substrate; a resin pattern layer; and a thin film coating layer. The substrate, the resin pattern layer, and the thin film coating layer are sequentially layered on each other. A protective film or a first protective coating layer is layered on a surface of the thin film coating layer that faces away from the resin pattern layer. A second protective coating layer is interposed between the thin film coating layer and the protective film or the first protective coating layer. A primer coating layer is interposed between the resin pattern layer and the thin film coating layer.
Abstract:
A method for coding messages by group codes over label alphabet and H-symmetric labeling is provided in order to encode geometrically uniform space-time trellis codes considering a distance spectrum. The coding method makes the complexity of code searching reduced considerably by limiting the object of the code design to geometrically uniform space-time trellis codes (STTCs). Therefore, it is possible to design the STTCs with many states, and also design the STTCs with superior performance.
Abstract:
A method of differential unitary space-time modulation is provided by encoding messages to transmit through multiple transmitting antenna into multiple trellis code in a communication system wherein the signals are transmitted between multiple transmitting antennas and at least one receive antenna. The performance provided is superior to that of the modulation of the prior art.
Abstract:
The present invention provides a light emitting apparatus comprising a three-color light emitting device unit including at least three light emitting diode (LED) chips for respectively emitting red, green and blue light; a white light emitting device unit including at least one blue LED chip with a fluorescent substance formed thereon; and a substrate provided with a first electrode connected in common to ends of the LED chips and second electrodes formed to correspond respectively to the LED chips. Further, the present invention provides a light emitting apparatus comprising a plurality of LED chips; a substrate provided with a first electrode connected in common to ends of the plurality of LED chips and second electrodes formed to correspond respectively to the plurality of LED chips; an upper package formed on the substrate to surround the plurality of LED chips and to have a partition crossing the first electrode at the center of the upper package; and a molding member that encapsulates the plurality of LED chips and is divided by the partition of the upper package.