Patent application number | Description | Published |
20090197535 | APPARATUS AND METHOD FOR CONTROLLING FREQUENCY IN MOBILE COMMUNICATION SYSTEM - An apparatus and a method for mitigating interference between uplink signals of a user equipment in a mobile communication system are provided. The apparatus includes a frequency regulator for, when fast movement of a user equipment is confirmed, changing a transmit frequency by calculating a frequency offset compensation value which compensates for a frequency required for a transmit frequency band. | 08-06-2009 |
20100322065 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING SIGNAL IN SINGLE CARRIER FREQUENCY DIVISION MULTIPLEXING ACCESS COMMUNICATION SYSTEM - A method and apparatus for transmitting a signal in a Single Carrier-Frequency Division Multiplexing Access (SC-FDMA) communication system are provided. The method includes determining if a Bandwidth Expansion Factor (BEF) Q is an integer, the BEF being determined as N/M according to a number N of subcarriers of a system band and a number M of subcarriers of an allocated band, expanding an input signal to be transmitted Q times in a time domain when the Q is an integer, generating an SC-FDMA signal, and transmitting the SC-FDMA signal. | 12-23-2010 |
20110182339 | METHOD AND APPARATUS FOR REDUCING PEAK TO AVERAGE POWER RATIO USING PEAK WINDOWING - A method and apparatus for reducing a Peak to Average Power Ratio (PAPR) using peak windowing is provided. In the apparatus, an absolute value calculator calculates an absolute value of an input signal, a subtractor subtracts a predetermined clipping threshold level from the absolute value, a smoothing unit performs smoothing on the subtracted signal according to a predetermined smoothing scheme and outputs a first smoothed signal, an adder adds the first smoothed signal to the clipping threshold level, an inverse calculator outputs a second smoothed signal by multiplying the clipping threshold level by an inverse of the added signal, and a multiplier outputs a final PAPR-reduced signal by multiplying the input signal by the second smoothed signal. The method and apparatus address an overcompensation problem while processing signals having a large bandwidth and a high data rate without delay, thereby minimizing the clipping influences on Bit Error Rate (BER) and Adjacent Channel Leakage Ratio (ACLR) performances. | 07-28-2011 |
20130072139 | APPARATUS AND METHOD FOR PROCESSING REDUCED BANDWIDTH ENVELOPE TRACKING AND DIGITAL PRE-DISTORTION - An apparatus and a method for processing reduced bandwidth Envelope Tracking (ET) and Digital Pre-Distortion (DPD) are provided. The apparatus includes a Crest Factor Reduction (CFR) unit, a resealing Digital Pre-Distortion (DPD) unit, an envelope converter, a Supply Modulator (SM), and a Power Amplifier (PA). The CFR unit suppresses an increase of a side lobe occurring when a Peak to Average Power Ratio (PAPR) decreases with respect to a signal generated in a baseband according to a standard and passes through a transmit (Tx) filter. The resealing DPD unit receives an original envelope amplitude and a reduced bandwidth envelope amplitude of an In-phase/Quadrature-phase (I/Q) signal output from the CFR unit to perform a pre-distortion process. The envelope converter converts an envelope signal to a reduced bandwidth envelope signal based on the I/Q signal output from the CFR unit. | 03-21-2013 |
20130159369 | APPARATUS AND METHOD FOR PERFORMING DISCRETE FOURIER TRANSFORM - A Discrete Fourier Transform (DFT) apparatus is provided. The DFT apparatus includes a first delay, a second delay, an operator, and a multiplier. The first delay delays one sampling data by N-sample in a time axis when the one sampling data is input. The second delay delays an output value of a frequency component for a previous sampling data by 1-sample. The operator performs an operation based on the input one sampling data, the one sampling data delayed by the N-sample in the time axis, and the 1-sample delayed output value of the frequency component for the previous sampling data. The multiplier multiplies an output value from the operator by a twiddle factor | 06-20-2013 |
20150244659 | MESSAGE PROCESSING METHOD AND ELECTRONIC DEVICE SUPPORTING THE SAME - A message processing method and an electronic device for supporting the same are provided. The electronic device includes a communication interface configured to receive a message including a plurality of pages, and a control module configured to process the received message, wherein, if undefined data exists among data contained in a specific page of the plurality of pages, the control module combines at least a part of data contained in a next page that is sequential to the specific page with the undefined data. | 08-27-2015 |
20150244853 | METHOD FOR COMMUNICATING WITH NEIGHBOR DEVICE, ELECTRONIC DEVICE, AND STORAGE MEDIUM - A method in which a second electronic device communicates with a neighbor device is provided. The method includes connecting to a first electronic device, receiving first information for a third electronic device from the first electronic device, and controlling the third electronic device using the first information, wherein the first information includes control right information for the third electronic device. | 08-27-2015 |
20150245166 | COMMUNICATION METHOD, ELECTRONIC DEVICE, AND STORAGE MEDIUM - A method of performing communication by a first electronic device is provided. The method includes receiving an input for communication with a third electronic device, determining at least one of a first communication module of the first electronic device and a second communication module of a second electronic device for the communication with the third electronic device, and controlling the first or second communication module for the communication with the third electronic device in response to the input. | 08-27-2015 |