Abstract: An apparatus and a method for transmitting HARQ feedback information in a wireless communication system are provided. In so doing, the method for transmitting the HARQ feedback information in a receiving end includes confirming the number of packets received from a transmitting end, and when receiving a reference number of packets from the transmitting end, transmitting to the transmitting end a feedback signal comprising HARQ feedback information for the reference number of the packets.

Abstract: An apparatus and a method for transmitting HARQ feedback information in a wireless communication system are provided. In so doing, the method for transmitting the HARQ feedback information in a receiving end includes confirming the number of packets received from a transmitting end, and when receiving a reference number of packets from the transmitting end, transmitting to the transmitting end a feedback signal comprising HARQ feedback information for the reference number of the packets.

Abstract: An apparatus and a method for transmitting HARQ feedback information in a wireless communication system are provided. In so doing, the method for transmitting the HARQ feedback information in a receiving end includes confirming the number of packets received from a transmitting end, and when receiving a reference number of packets from the transmitting end, transmitting to the transmitting end a feedback signal comprising HARQ feedback information for the reference number of the packets.

Abstract: A digital signal processor is provided. The digital signal processor includes an execution circuit configured to receive a first data including first bits expressed in a signed magnitude method and a second data including second bits expressed in the signed magnitude method, and a control logic circuit configured to output a control signal that determines a type of operation on the first data and the second data based on a command signal, wherein the execution circuit is further configured to perform an operation on the first data and the second data according to a determined type of operation and generate a result of the operation.

Abstract: A method of operating a terminal that is related to achieving synchronization in a wireless communication system is provided. The method includes receiving signals with a bandwidth comprising a plurality of channels, selecting at least one channel group to attempt to detect based on radio frequency level per a reception signal, wherein the channel group denotes a set of channels that belongs to one bandwidth, and performing a synchronization procedure on each of channels that belong to the at least one channel group selected.

Abstract: An apparatus and a method for transmitting HARQ feedback information in a wireless communication system are provided. In so doing, the method for transmitting the HARQ feedback information in a receiving end includes confirming the number of packets received from a transmitting end, and when receiving a reference number of packets from the transmitting end, transmitting to the transmitting end a feedback signal comprising HARQ feedback information for the reference number of the packets.

Abstract: An apparatus and a method for transmitting HARQ feedback information in a wireless communication system are provided. In so doing, the method for transmitting the HARQ feedback information in a receiving end includes confirming the number of packets received from a transmitting end, and when receiving a reference number of packets from the transmitting end, transmitting to the transmitting end a feedback signal comprising HARQ feedback information for the reference number of the packets.

Abstract: An apparatus and a method for generating statistical signals having a characteristic similar to an input signal of a receiving apparatus to determine an optimized filter coefficient through an adaptive equalization algorithm are provided. The apparatus includes a channel estimator, a statistical signal generator, and an adaptive algorithm processor. The channel estimator estimates a channel of a reception signal. The statistical signal generator generates a plurality of signals having the same characteristic as that of a reception signal using a channel determined through a channel estimation process. The adaptive algorithm processor performs an adaptive equalization algorithm using the plurality of generated signals to determine an optimized filter coefficient.

Abstract: An apparatus for switching between receivers according to a characteristic of a received signal in a communication system includes a radio frequency unit that modulates at least two signals received from transmission devices, and a Channel Impulse Response (CIR) shape comparison unit that determines characteristics of the modulated signals by using a CIR and selects a receiver according to the determined characteristics of the modulated signals.

Abstract: A digital signal processor is provided. The digital signal processor includes an execution circuit configured to receive a first data including first bits expressed in a signed magnitude method and a second data including second bits expressed in the signed magnitude method, and a control logic circuit configured to output a control signal that determines a type of operation on the first data and the second data based on a command signal, wherein the execution circuit is further configured to perform an operation on the first data and the second data according to a determined type of operation and generate a result of the operation.

Abstract: The present invention relates to a control signaling method and apparatus in a coordinated multi-point (CoMP) system. A base station generates a cell information block (CIB) containing associated cell information of each CoMP base station of the CoMP system, scrambles first control information for the transmission of the CIB using a CoMP-radio network temporary identifier (RNTI) given to the CoMP system, transmits the scrambled control information to terminals in a cell via a control channel, and transmits the CIB to terminals in the cell via a data channel. In addition, when handover to a target cell for a specific terminal from among said terminals is determined, the base station generates second control information for indicating the target cell, scrambles the second control information using a cell RNTI (C-RNTI) of the specific terminal, and transmits the scrambled control information to the specific terminal via the control channel, to thereby indicate cell reselection and/or handover to the target cell.

Abstract: A method and an apparatus for performing a Coordinated Multi-Point (CoMP) transmission in a wireless communication system are provided. An operating method of a base station for the CoMP transmission in a wireless communication system includes performing a cell clustering for CoMP transmission of a terminal, receiving a reference signal from the terminal, determining cell IDentifier (ID) information of the terminal, when the terminal uses a cell ID for the CoMP transmission, comparing a Channel Quality Indicator (CQI) value of the reference signal with a threshold, and when the CQI value of the reference signal is greater than or equal to the threshold, participating in the CoMP transmission of the terminal.

Abstract: Methods and apparatus are provided for transmitting and receiving data in a wireless communication system. A number of errors for a received data is determined. A power boosting message is generated and transmitted based on the number of errors to a transmitting apparatus such that the transmitting apparatus is configured to transmit data using a boosting power.

Abstract: An apparatus for switching between receivers according to a characteristic of a received signal in a communication system includes a radio frequency unit that modulates at least two signals received from transmission devices, and a Channel Impulse Response (CIR) shape comparison unit that determines characteristics of the modulated signals by using a CIR and selects a receiver according to the determined characteristics of the modulated signals.

Abstract: An apparatus and a method for estimating a Doppler frequency in a mobile communication system are provided. The apparatus includes an estimator for temporarily estimating a maximum Doppler frequency based on channel values sampled according to a first period in a frame, a detector for calculating at least one correlation value between at least one channel value additionally sampled in the frame and at least one channel value sampled over the first period, and for determining whether aliasing occurs based on the correlation value, and a determiner for determining a final maximum Doppler frequency according to the occurrence or non-occurrence of the aliasing.

Abstract: A data transportation/reception apparatus and method in a mobile communication system. The data transportation apparatus and method divides transport data bits into bits having higher priority and bits having lower priority, maps the bits having higher priority to bit positions having higher reliability, and maps the bits having lower priority to bit positions having lower reliability. The data reception apparatus and method demodulates received modulated symbols, divides the demodulated coded bits into two coded bit groups according to priority, deinterleaving the coded bit groups using different deinterleavers, and decodes the deinterleaved coded bits.

Abstract: A control channel element detection method and apparatus is provided for detecting the Control Channel Elements (CCEs) carrying control information for a mobile station using a Channel Quality Indicator (CQI). A CCE detection method includes searching a current subframe for CCEs, and locating the CCEs carrying control information for the mobile station by decoding the current subframe with variable code rates. Searching for the CCEs includes searching the current subframe for the CCEs carrying the control information for the mobile station while changing a size type of the CCEs according to a result of a comparison between a CQI of the current subframe and a CQI of a previous subframe.

Abstract: An apparatus and a method for transmitting HARQ feedback information in a wireless communication system are provided. In so doing, the method for transmitting the HARQ feedback information in a receiving end includes confirming the number of packets received from a transmitting end, and when receiving a reference number of packets from the transmitting end, transmitting to the transmitting end a feedback signal comprising HARQ feedback information for the reference number of the packets.

Abstract: A method and apparatus for controlling iterative decoding in a turbo decoder are provided, in which a maximum number of iterations is determined for current data to be decoded based on at least one of current HARQ information necessary for a HARQ operation of the current data, previous HARQ information about previous data, and early stop information indicating whether iterative decoding of the previous data was early stopped. A turbo decoder iteratively decodes the current data within the maximum number of iterations.

Abstract: A method of operating a terminal that is related to achieving synchronization in a wireless communication system is provided. The method includes receiving signals with a bandwidth comprising a plurality of channels, selecting at least one channel group to attempt to detect based on radio frequency level per a reception signal, wherein the channel group denotes a set of channels that belongs to one bandwidth, and performing a synchronization procedure on each of channels that belong to the at least one channel group selected.