Abstract: The present invention relates to a method for timing acquisition and carrier frequency offset estimation of an OFDM communication system and an apparatus using the same. For this purpose the present invention provides a method for calculating at least one auto-correlation and calculating an observation value by performing a sliding sum on the at least one auto-correlation, and calculating a peak point of an absolute value of the observation as frame timing. In addition, the present invention provides a method for generating a third OFDM symbol that is generated by delaying a second OFDM symbol, calculating an observation value through the second and third OFDM symbols, and calculating a phase difference from a result of multiplication of the observation value and a conjugate complex value of the observation value such that a carrier frequency offset can be estimated.

Abstract: Provided are a method, a device, and a system for displaying at least one character for identifying a caller, together with the caller's phone number, on a recipient's mobile phone when an incoming call is received. The system includes a caller's mobile phone for allowing the caller to input a recipient's phone number and at least one character desired to be added after the phone number, generating an outgoing call message including the caller's phone number, recipient's phone number and input word or phrase for an outgoing call, and sending the generated message; a base station for receiving the outgoing call message, and changing the outgoing call message to an incoming call message which will be sent to the recipient's mobile phone; and the recipient's mobile phone for receiving the incoming call message and outputting any word or phrase included in the incoming call message.

Abstract: An apparatus for generating a linear code according to the present invention includes a coding unit for coding input bits with a second coding scheme which is different from a first coding scheme for generating the linear code; and a rearrangement unit for generating the linear code by rearranging the bits coded with the second coding scheme. The present invention can provide a coding apparatus and method capable of reducing complexity by adaptively applying it to various coding scheme.

Abstract: A method for reducing a Peak to Average Power Ratio (PAPR) using reserved tones in a transmission apparatus of an Orthogonal Frequency Division Multiplexing (OFDM) communication system is provided. The method includes detecting a subcarrier spacing interval and the number of spaced symbols based on a predetermined pilot pattern upon signal reception, and determining positions of shifted reserved tones obtained by shifting positions of reserved tones allocated to a predetermined symbol during the number of the spaced symbols at intervals of the spacing interval; determining an impulse waveform obtained by rotating a phase of a complex value of an impulse stored in a memory, using the determined positions of frequency-domain reserved tones of each symbol; calculating a subtrahend for a PAPR of an output signal using the phase-rotated impulse waveform; and reducing a PAPR of an input signal by performing a gradient algorithm using the phase-rotated impulse waveform.

Abstract: Disclosed is a method for transmitting reminders for deferred message, the method includes requesting, by client, to set reminders for deferred messages to a application sever (AS); setting, by the application sever, reminders comprising information of when to remind, whether to repeat reminder or not, and/or how many times to repeat; monitoring, by the application sever, time of the set reminders in order to notify the Client; and notifying, by the application sever, the reminders to the client once a timer triggers to send a notification.

Abstract: A transceiver having a multistage channel filter for a wireless communication system is disclosed. The transceiver is composed of a transmitter unit including a multistage channel filter module to perform channel filtering on an input signal having a sampling rate corresponding to a channel bandwidth of the wireless communication system by means of sampling-rate conversion through multiple stages, and a receiver unit corresponding to the transmitter unit.

Abstract: A communication system and method for securely and efficiently sharing a link key for security and authentication in a ZigBee network. Upon receipt of an access request from an end device, a trust center sends a public key to the end device, and upon receipt of the public key, the end device encrypts an arbitrary key using the public key, and sends the encrypted arbitrary key to the trust center. The trust center generates a link key using the arbitrary key, and sends the link key to the end device.

Abstract: A time-sharing Visible Light Communication (VLC) system is provided. Two or more light sources transmit data received from one or more VLC terminals located in its service area to a communication control device, and transmits data received from the communication control device to the one or more VLC terminals. The communication control device determines and groups at least one of the two or more light sources to be included in a cell according to a generated user service, maps the grouped at least one light source to the cell, allocates a time slot used to provide the user service to the cell, transmits data associated with the user service to at least one of the one or more VLC terminals through the at least one light source mapped to the cell using the allocated time slot, detects a location of the at least one VLC terminal located in a service area of the cell on a real-time basis, and remaps the cell according to the detected location.

Abstract: Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly use time and frequency resources for efficient code hopping. The method includes allocating the same frequency-axis sequence and different time-axis sequences to a plurality of terminals by using a resource index according to a first slot in the first slot; and allocating different frequency-axis sequences and different time-axis sequences to the plurality of terminals by using a resource index according to a second slot in the second slot.

Abstract: Disclosed is a method for adjusting a ring tone volume in a mobile communication terminal. The method implements a function by which a user can directly adjust the ring tone volume in a mobile communication terminal in consideration of circumstances. To this end, the present invention includes a user interface screen by which a user can adjust the output volume level of the ring tone which rings according to the passage of time. Thus, the present invention provides a user interface screen by which a user can adjust the output volume level of a ring tone which rings according to the passage of time, and enables the user to set the output level of the ring tone and the output time of the ring tone at a corresponding level according to predetermined intervals through the screen.

Abstract: An external connection interface emulation method and apparatus of a mobile terminal for exploiting the mobile terminal as a network adaptor of another terminal are provided. The external connection interface emulation apparatus includes a network modem for supporting communication through the mobile communication system; and a controller, which configures the network modem for operating the mobile terminal as an external network adaptor of another terminal or a communication device as it is, according to an input signal. The external connection interface emulation apparatus and method establish a communication link between a WiBro modem and a USB port at the software level making it possible to use the mobile phone as an external modem regardless of whether the WiBro modem and the USB port are compatible or not.

Abstract: A plate that provides a handle area, a food-contact area, a transition area between the handle and food-contact areas, a cup hole, and first and second thumb holes adjacent to the cup hole. The cup hole of the plate, as well as the first and second thumb holes, are located within the handle area at different elevations from an elevation of the food-contact area of the plate.

Abstract: A method and apparatus for subscribing to a digital broadcasting service using mobile network subscription information in a system where a 3G (third generation) mobile communication network interacts with a DBS (digital broadcasting system) are provided. When a user requests subscription to the digital broadcasting service through a digital broadcasting-enabled mobile equipment, a DBS-CSCF (call session control function) in the 3G network transmits to an SAS (subscription agent server) of the DBS a service subscription request including the mobile subscription information or additional user personal information. The SAS processes the subscription and transmits information required for reception of the digital broadcasting to the mobile equipment. The mobile equipment changes its digital broadcasting reception setting.

Abstract: A method for setting a lip region of a face included in an image, including setting a first region and a second region in an image including a face, identifying contrast information of the first region, setting a threshold for binarization using the contrast information, and binarizing the second region based on the threshold. A region in which a pixel having an identical binary value continuously distributed within a predetermined number of ranges in the binarized image is set as an eye candidate object. An eye region is then extracted from the eye candidate object based on geometric characteristic of an eye region in an image, and the lip region is set with reference to the extracted eye region based on geometric information of the eye region and the lip region.

Abstract: Emergency drag stretcher devices are provided that include a combination of a base panel formed of a flexible sheet material, and a unitary harness device coupled to the base panel, wherein the unitary harness system is adapted to securely restrain an individual and hold the base panel against the individual, and allow the individual to be dragged or vertically lifted using the emergency stretcher device.

Abstract: A Maximum Likelihood (ML) detection apparatus and method in a wireless communication system are provided, in which a Euclidean distance are calculated using at least one of channel matrix information, noise power information and modulation order information of each stream, Pairwise Error Rate (PER) are calculated using the Euclidean distance, an error probability of the each stream is calculated using the PER, the error probability of the each stream is ordered and sorted, and ML detection is performed using a result of the ordering and sorting.

Abstract: A focal plane shutter having a front film and a back film which expose a charge-coupled device to light as they move back and forth between a cover plate and a base plate, between a charging position and a discharging position at a certain time interval. The focal plane shutter includes at least one lever member which is connected to the front film and/or back film, and which amplifies an impact force generated during a charging and a discharging movement of the front film and/or back film using a lever action. An elevating member slides in a direction parallel with the movement of the front film and/or back film by the impact force amplified in the lever member. An impact absorbing unit regulates the sliding movement of the elevating member to absorb impact energy generated by the movement and stop of the front film and/or back film.

Abstract: Provided are a composition and method of increasing health of the human body includes placing a composition inside a solution jar of a solution jar assembly, wherein the composition comprises at least one of a garlic solution comprising garlic extract, ethanol, and water; a 10-undecenoic acid solution comprising 10-undecenoic acid and at least one of water and alcohol; and a Pau d'Arco solution comprising Pau d'Arco extract, corn starch, ethanol, and water, wherein the solution jar assembly includes a device comprising either a radial appliance or a wet-cell battery appliance; a first metal disc connected to the device by a first wire; a solution jar, connected to the device by a second wire, for holding the solution; a second metal disc connected to the solution jar by a third wire; and a connecting loop, located inside a removable lid of the solution jar, connecting the first and third wires and passing through the solution; wherein if the device is the radial appliance, placing the radial appliance in a co

Abstract: An apparatus and method for generating a parity-check matrix of a Low-Density Parity-Check (LDPC) code are provided. Parameters for designing the LDPC code are determined, and a first parity-check matrix of a quasi-cyclic LDPC code is formed according to the determined parameters. A second parity-check matrix is created through the elimination of a predetermined portion of a parity part in the first parity-check matrix, and a third parity-check matrix is created by rearranging the second parity-check matrix.

Abstract: A self-organizing resource access method is provided for transmitting data by self-organizing resource access by each individual node in a Local Area Network (LAN) communication environment where at least two nodes exchange data with each other. A first node listens to at least one data transmission of at least one other node connected to the LAN, and adjusts a data transmission start time of the first node in accordance with a data transmission start time of the at least one other node so that the data transmission start time of the first node does not overlap the data transmission start time of the at least one other node. The first node transmits data to the at least one other node at the adjusted data transmission start time.