Samsung Electronics Co., Ltd.

Ik-Beom Lee

Ha-Young Yang

Sung-Kwon Jo

Seung-Joo Maeng

Jae-Ho Jeon

Joo-Hyun Lee

Seungjoo Maeng

Myonghee Park

Neung Hyung Lee

The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as long term evolution (LTE). A method of operating a base station for interference cancellation in a wireless communication system is provided. The method may include receiving, from a target terminal, an uplink data signal including at least one interference signal generated by at least one interference terminal; performing a primary decoding for the uplink data signal; in accordance with decoding errors, generating a cancelling signal corresponding to an interference signal of the at least one interference terminal; performing a cancellation by applying the cancelling signal to the uplink data signal; and performing a secondary decoding for the uplink data signal to which the cancelling signal has been applied.

Interference cancellation method and base station apparatus therefor

The present invention relates to a method and device for controlling a timing of a terminal in a wireless communication system. The method for controlling a timing of a terminal by a base station in a wireless communication system may comprise the steps of: determining a target timing of a terminal so as to locate an uplink signal reception timing of the terminal in a cyclic prefix (CP) interval; transmitting, to the terminal, a timing control command including information on the target timing; receiving an uplink signal from the terminal; and compensating for a time offset value of the received uplink signal on the basis of the target timing.

Method for controlling timing of terminal in wireless communication system, and electronic device therefor

The present disclosure is related to a method and apparatus for channel estimation in a wireless communication system. The method and apparatus for channel estimation are used to determine a number of sub-carriers or symbols to be used to estimate N channels for N user equipment (UE)s on a basis of resource allocation information on N reference signals associated with the N UEs, estimate channel values for the N channels by receiving the N reference signals through the sub-carriers or the symbols according to the determined number, and correlate the estimated channel values to use the correlated channel values to estimate each of the N channels.

Method and apparatus for channel estimation in wireless communication system

Disclosed is a method for canceling multi-user interference (MUI) by a base station (BS) in a wireless communication system. The method includes determining the number of tones to accumulate channel values among tones included in a resource area, based on a minimum delta cyclic shift (CS) that represents a minimum gap between CS values allocated to user equipments (UEs) and a number of UEs to be multiplexed, creating a matrix of amounts of change in phase for the tones to accumulate for the UEs to be multiplexed, and canceling MUI based on a signal matrix.

Apparatus and method for canceling multi-user interference in wireless communication system

An apparatus and method for controlling a whitening function of a whitening Maximum Ratio Combining (MRC) in a receive end of a multiple antenna system are provided. The method includes identifying if there is interference from at least one neighbor cell, if there is interference, generating a weight of the whitening MRC using a pre-whitening inverse matrix, and, if there is no interference, generating a weight of the whitening MRC using a unit matrix, thus being capable of improving a reception performance of the receive end.

Apparatus and method for adaptive whitening in a multiple antenna system

A method for measuring channel quality of a Base Station (BS) by using a ranging signal in a broadband wireless communication system is provided. The method includes estimating a time offset of the ranging signal received through a ranging channel, measuring channel quality by using the ranging signal including the time offset, determining whether distortion occurs in the measured channel quality by using the time offset, and compensating for distortion of the measured channel quality.

Apparatus and method for measuring channel quality by using ranging signal in broadband wireless communication system

An apparatus for a base station of a wireless communication network includes a detector to detect an access code received from a mobile station in each of a plurality of time durations and to detect a timing offset of the access code detected in each of the plurality of time durations, an estimator to estimate a carrier-to-interference noise ratio (CINR) during each of the plurality of time durations, and a determining unit to determine a timing offset correction value to be applied to subsequent signals from the mobile station using the CINR, the timing offset, and the access code detected in each of the plurality of time durations.

Apparatus and method for detecting a ranging signal in a wireless communication system

Provided is an outer loop power control apparatus and method for a signal transmitter in a communication system. The outer loop power control method includes determining a first setpoint of a kframe according to whether or not an error occurs in a (k&#x2212;1)frame, updating a second setpoint of the kframe with the first setpoint of the kframe if a difference value between the first setpoint of the kframe and a second setpoint of the (k&#x2212;1)frame is greater than a first reference value, and transmitting a transmit power control message to a signal receiver at the kframe if the difference value between first setpoint of the kframe and the second setpoint of the (k&#x2212;1)frame is greater than a second reference value.

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Seongnam-si, South Korea

Ik-Beom Lee