摘要:
A lenticular unit includes a transparent substrate; first electrodes being transparent and disposed on the substrate; a second electrode being transparent and elastic; and a transparent material layer interposed between the first and second electrodes and being deformable in a lens shape in a thickness direction depending on a potential applied between the first and second electrodes.
摘要:
A technology is provided capable of improving the efficiency of an OFDM system by obtaining the performance in Bit Error Rate (BER) in a wireless communication using OFDM and determining the minimum FFT input bit that produces a SNR difference of 0.1 dB or below with respect to a theoretical BER graph at a desired performance.
摘要:
A method and an apparatus for acquiring initial synchronization in a wireless communication system are provided. A relay station determines whether or not the initial synchronization is acquired, determines a start position of a frame using a peak of an autocorrelation signal detected based on a preamble and a relay-amble (R-amble) received from a base station in the case in which the initial synchronization is not acquired, and determines the start position of the frame using a peak of an autocorrelation signal detected based on the relay-amble received from the base station in the case in which the initial synchronization is acquired.
摘要:
A liquid crystal display is provided. The liquid crystal display includes a substrate. A thin film transistor is disposed on the substrate. A passivation layer is disposed on the thin film transistor. A pixel electrode is disposed on the passivation layer. A minute space layer is disposed on the pixel electrode and includes a liquid crystal injection hole. A first overcoat is disposed on the minute space layer. A common electrode is disposed on the first overcoat. A capping layer covers the liquid crystal injection hole. The capping layer includes graphene.
摘要:
A method of forming a conductive pattern includes forming a trench on a substrate, and providing a conductive ink to the trench while an electric field is generated between the substrate and a nozzle which ejects the conductive ink.
摘要:
A technology of setting up a MBS zone for providing a mobile IPTV service is provided in which the MBS zone is effectively managed, so that QoS is prevented from being degraded due to the handover delay that is caused by a MBS handover occurring when a user moves between MBS zones.
摘要:
A base station for allocating an MCID includes: a first transmitting/receiving unit to exchange data with a content distribution network and to extract header information; a combining unit to construct the data on a frame basis; a second transmitting/receiving unit to exchange the frame with a subscriber terminal receiving the constructed frame and to receive a Multicast and Broadcast Service (MBS) channel connection request message; a first analyzing unit to extract attribute information of the data by analyzing the extracted header information and to analyze the type of the data; a second analyzing unit to extract channel information by analyzing the MBS channel connection request message; and a control unit to exchange an MBS burst reservation message with the content distribution network, to reserve/allocate an MBS burst region, to allocate an MCID to the data, and to manage the registration state of an MBS channel corresponding to the MCID.
摘要:
Provided are a handover method using a relay station having a handover control function and a multi-hop relay system. When handover of mobile stations connected to a relay station is required, the relay station negotiates handover of the mobile stations with a base station by exchanging a handover request message and a handover response message. Upon execution of handover of the mobile stations, the relay station collects handover results of the mobile stations and transmits the handover results to the base station. The base station then updates information about the handed-over mobile stations.
摘要:
A blind rate detection method in an asynchronous mobile communication system comprises: restoring data when a path selection (PS) value at a last bit's possible position satisfies a PS condition; determining whether a SER satisfies a SER condition when no error occurs in a CRC; determining whether to update a minimum value of PS values when the SER satisfies the SER condition; setting a PS value of the last bit's possible position as the minimum value of the PS values and the last bit's possible position as a last detection position when updating the minimum value; and repeating the above steps until the last bit's possible position reaches a maximum value, and outputting the last detection position when the last bit's possible position becomes the maximum value.
摘要:
An encoder using LDPC (low density parity check) codes, and an encoding method. The encoder comprises a parity check matrix generator for generating a parity check matrix H; and a codeword generator for processing the parity check matrix H to generate a codeword, and the codeword generator comprises: an AB analyzer for analyzing the parity check matrix H into matrixes A and B; a pivoting unit for pivoting the parity check matrix H; a bit-reversing unit for bit-reversing the pivoted matrix; an LU analyzer for analyzing the matrix A into matrixes L and U; and a codeword generator unit for performing a logical operation on the matrixes A, B, L and U. A bit-reversing method is used to effectively generate a parity check matrix having a high girth by using a regular encoder.