Abstract: Provided is a method and a terminal for executing a function of a terminal according to data transmitted and received through a human body, which includes detecting a touch in a human body communication signal input unit, wherein the human body communication signal input unit is in a human body communication key mode; determining a number detected touches and determining a number pulse signals transmitted during a time in which the touch is maintained when the touch is detected; and executing a function corresponding to the human body communication signal.

Abstract: An apparatus for performing coordinated multiple point (CoMP) communication using a precoded sounding reference signal, and a method for same are discussed. The method according to an embodiment of the present invention includes: a base station receiving, from a terminal in a neighboring cell, a sounding reference signal (SRS) precoded by a first matrix; acquiring an effective neighboring channel matrix using a hermitian matrix of the first matrix from the received SRS, and a downstream link channel matrix between the terminal and base station; and determining a precoding matrix to be transmitted to one or more terminals served by the base station on the basis of the effective neighboring channel matrix. Here, the effective neighboring channel matrix indicates a direction toward which a receiving beam should be directed such that the terminal can receive data from a serving base station thereof.

Abstract: An apparatus and method for controlling Transmit (Tx) power when a portable terminal performs human body communication with a counterpart portable device are provided. The apparatus includes a voltage manager for determining whether the Tx power needs to be changed based on an output voltage that is based on a current that varies according to a distance between an electrode of a portable terminal and an electrode of a counterpart portable terminal, and changes the Tx power according to a result of the determination.

Abstract: Disclosed are a method and apparatus for removing inter-heterogeneous cell interference. A terminal apparatus for removing inter-heterogeneous cell interference comprises: a receiver which receives, from a first base station which is a serving base station, a signal for instructing that a request for interference coordination information required for inter-heterogeneous cell interference coordination be made to a second base station which is heterogeneous to the first base station; a transmitter which transmits, to the second base station, a predetermined physical random access channel (PRACH) preamble which notifies said request through a PRACH; a receiver which receives the interference coordination information from the second base station; and a transmitter which transmits the received interference coordination information to the first base station.

Abstract: A method and apparatus of mitigating inter-cell interference in a wireless communication system are provided. A user equipment receives serving-cell data over a first data channel indicated by a first control channel for which decoding is successful by monitoring a plurality of candidate control channels in a search space of a serving cell. The user equipment receives interfering-cell data over a second data channel indicated by a second control channel for which decoding is successful by monitoring a plurality of candidate control channels in a search space of an interfering cell. The A user equipment cancels interference from the interfering cell by processing the serving-cell data and the interfering-cell data.

Abstract: Disclosed are a method for transmitting CoMP feedback information in a wireless communication system and a terminal apparatus using the same. Measured values of adjacent cells for performing a CoMP operation can be generated by using measured values defined in an existing LTE system. Consequently, the present invention doesn't need to define new measured values in a LTE-Advanced system.

Abstract: An apparatus and method for controlling Transmit (Tx) power when a portable terminal performs human body communication with a counterpart portable device are provided. The apparatus includes a voltage manager for determining whether the Tx power needs to be changed based on an output voltage that is based on a current that varies according to a distance between an electrode of a portable terminal and an electrode of a counterpart portable terminal, and changes the Tx power according to a result of the determination.

Abstract: An apparatus and method of multi cell cooperation is provided. The user equipment receives transmission beam forming information from a first cooperative cell, generates serving cell feedback information and cooperative cell feedback information on the basis of the transmission beam forming information, transmits the serving cell feedback information to a serving cell, and transmits the cooperative cell feedback information to a second cooperative cell.

Abstract: A apparatus and method for transmitting channel state information is disclosed. If an LTE-A system transmits a reference signal per subframe to support eight transmitting antennas, a problem occurs in that overhead is great. In order to solve this problem, a reference signal for channel measurement is transmitted per subband at different periods, or a user equipment scheduled for channel measurement uses a demodulation reference signal. The user equipment can notify a base station of channel measurement result using the demodulation reference signal in accordance with implicit or explicit signaling from the base station.

Abstract: An apparatus and method for generating a codebook in a wireless communication system are disclosed. The codebook generation method includes determining one or more dominant singular vectors in a channel matrix for antennas and setting each of the dominant singular vectors as a random non-zero vector, generating a first codebook having codewords, a minimum distance between the code-words being maximized, using the random non-zero vector in a region that includes unit norm vectors each having a Euclidean distance to each of the dominant singular vectors, equal to or less than a predetermined value, generating a second codebook corresponding to a unitary matrix that rotates the random non-zero vector toward the dominant singular vectors, and generating a final codebook using the first and second codebooks.

Abstract: A PCB having an embedded bare chip includes an insulated substrate having a penetration hole formed therein; a filler filling up an inside of the penetration hole; a bare chip embedded in the filler such that electrode pads formed on one side thereof are exposed at the surface of the filler; and an electrode bump attached to a surface of the electrode pads and protruded to be exposed to the outside.

Abstract: Disclosed is a light emitting diode package, including a metal body including a cavity for receiving a light emitting diode therein, a lens mount for mounting thereon a lens through which light is transmitted, a heat sink for dissipating heat, a lead insertion recess formed on a bottom surface of the metal body so that a lead is inserted therein, and a bonding hole formed to communicate with the lead insertion recess and passing through the cavity of the metal body; and a lead seated into the lead insertion recess of the metal body and insulation bonded to the bottom surface of the metal body by means of an insulating binder, so that an insulation type bonding relationship between the metal body and the lead is maintained stable. A method of manufacturing the light emitting diode package is also provided.

Abstract: Provided are a method and apparatus for the feedback of channel information in a wireless communication system. User equipment transmits a recommended rank to a base station. The user equipment receives, from the base station, an indicating rank that has been determined in consideration of the recommended rank, and transmits a channel status determined on the basis of the indicating rank to the base station.

Abstract: Disclosed are a feedback-transmitting method and data-transmitting method, and a method for generating a codebook that can be used in a system such as LTE-A. When multiple base stations operate in a cooperative mode, using a codebook generated according to the present invention, an existing codebook for single cell transmission can be used to generate a codebook for cooperative transmission.

Abstract: A cooperative multiple point transmission and reception (CoMP) method of a user equipment (UE) receiving signals from a plurality of base stations (BSs) comprises receiving a first signal from a serving BS, receiving a second signal from an interfering BS, and restoring data, included in the first signal, using the second signal. The second signal comprises a downlink signal, transmitted from the interfering BS to a UE connected to the interfering BS, and a dummy signal for canceling interference of the downlink signal with the first signal. In a wireless communication system composed of multiple cells, CoMP using DPC can be performed even without data sharing between the cells.

Abstract: There is disclosed a method of a user equipment feeding back channel state information in a wireless communication system, comprising receiving a reference signal from a base station; generating first channel state information by measuring the reference signal; generating second channel state information based on the first channel state information; and transmitting the first channel state information and the second channel state information to the base station. The first channel state information is channel state information of a single user single cell Multi-input Multi-Output (MIMO) mode, and the second channel state information is channel state information of a multi-user MIMO (MU-MIMO) mode or a Cooperative Multiple Points Transmission and Reception (CoMP) mode.

Abstract: The method for channel information feedback based on multiple cell collaboration comprises a step wherein first channel quality information including the channel information between the terminal and base station is transmitted to the base station; a step wherein after the first channel quality information is sent; a channel quality information request message is received from the base station; and a step wherein in response to the channel quality information request message, second channel quality information is sent, including channel information between the terminal and the base station and adjacent base stations.

Abstract: A method and apparatus of transmitting data in a coordinated multi-cell wireless communication system is provided. A base station receives information about beam-forming vectors, aligned with a channel to a user equipment placed in a neighbor cell, and about nulling beam-forming vectors for the channel to the user equipment from the neighbor cell, determines a transmission beam-forming vector based on the information, and transmits data to the user equipment using the transmission beam-forming vector.

Abstract: A method of manufacturing a PCB that includes embedding a bare chip in a board such that electrode pads of the bare chip are exposed, and forming electrode bumps on the electrode pads.

Abstract: In one embodiment, the DAC includes an analog gray voltage generation unit configured to generate a plurality of analog gray voltages, and a first decoder configured to select two different voltages of the plurality of the gray voltages as a first level voltage and a second level voltage, respectively, in response to an upper K-bits of N-bit input image data. Here, N may be an integer not less than two, and K may be an integer less than N. A second decoder may be configured to repeatedly distribute the first level voltage and the second level voltage to output a plurality of distributed voltages in response to a lower L-bits of the N-bit input image data. Here, L may be equal to N subtracted by K, and L may be less than K. An interpolated voltage generation unit may be configured to generate an interpolated voltage based on the plurality of distributed voltages.