Samsung Electronics Co., Ltd.

Jong-hun Rhee

Min-Goo Kim

Jong-Han Lim

Beom-Sik Bae

Jeong Hun Kim

In-hyoung Kim

Min-goo Kim

Young-seok Jung

Yangsoo Kwon

Su-Yean Kim

Jae-Hyun Park

Jung-Soo Jung

Dong-Hee Kim

Sung-soo Kim

Hi-Chan Moon

Sang-Jin Lee

Yong-Sun Hwang

Young Mo Gu

Huigiang Zhou

A wireless communication method including receiving, through a wireless channel, table indication information indicating one of a first Modulation and Coding Scheme (MCS) table supporting up to 64 Quadrature Amplitude Modulation (QAM) and second and third MCS tables supporting up to 256 QAM, the third MCS table including a same number of MCS indices as the second MCS table and including less MCS indices corresponding to 256 QAM than the second MCS table, and identifying one of the first to third MCS tables according to the received table indication information to recognize a demodulation scheme for data to be received through the wireless channel may be provided.

Method and apparatus for wireless communication using modulation, coding schemes, and channel quality indicators

A method and apparatus for receiving data using multiple antennas in a communication system are provided. A received signal-combining scheme is determined according to the strength of an interference signal included in the signals received from the antennas. The signals received from the antennas are combined according to the determined received signal-combining scheme. In this manner, the method and apparatus adaptively use a received data-combining scheme according to the channel condition, thereby ensuring optimal reception performance.

Method and apparatus for receiving data using multiple antennas in a communication system

A method for segmenting an information word into code blocks in a mobile communication system. The method includes setting a number C of code blocks to a minimum integer not less than a value obtained by dividing X by Z; when sizes K of all code blocks are determined to be equal when a length X of the information word is greater than a maximum length Z of each code block, determining a minimum integer value T not less than a value obtained by dividing a size of the information word by a number of code blocks, and determining, as K, a maximum value most approaching the value T among the values based on which a size of the code block can be set in units of eight bits; and generating a code block by inserting filler bits into a specific code block when a value obtained by multiplying K by C is greater than X.

Method and apparatus for code block segmentation in a mobile communication system

A system and method are provided for setting a point of time when information is applied in a mobile communication system. A broadcast overhead message including additional information is received and its application time-point is computed. The broadcast overhead message including the additional information is then applied at the computed time-point.

Apparatus and method for encoding and decoding in a mobile communication system

An apparatus and method for transmitting data in a wireless communication system using Code Division Multiplexing (CDM) are provided. A code controller distinguishes a Walsh code used for spreading during data transmission and a Walsh code unused for spreading based on a signal-to-interference ratio required by the system, and separately provides the Walsh codes. A CDM multiplexer CDM-multiplexes input data using the Walsh code used for spreading, provided from the code controller. A code modulator modulates input data using the Walsh code unused for spreading, provided from the code controller. A multiplexer multiplexes outputs of the CDM multiplexer and the code modulator.

Complex multiplexing transmission/reception apparatus and method in a wireless communication system

Method and Apparatus for controlling combining coefficients of multiple receive antennas according to the channel conditions in a mobile communication system, to improve data restoration performance. A mobile station detects preamble, pilot and data from a signal received from a base station via the multiple receive antennas, measures a channel correlation from the detected preamble, classifies time-domain/frequency-domain intervals having a channel correlation exceeding a predetermined threshold as calculation regions, and calculates MMSE coefficients for the calculation regions. In this way, the mobile station finds the optimal coefficients for combining the signal received via the multiple receive antennas, thereby optimizing the reception performance.

Channel environment-adapted MMSE reception method and apparatus using multiple receive antennas

A method and apparatus provide a broadcast parameter message in a mobile communication system providing a broadcast service. If the provided broadcast service is time domain multiplex (TDM)-multiplexed, a message generator generates the broadcast parameter message by setting a field indicating the TDM multiplexing, setting a field indicating a position of the broadcast service in each sub-buffer, setting a field indicating whether one sub-buffer includes one service and a field indicating validity of the field, and setting a field exclusively indicating actual broadcast service data stored in one sub-buffer. A transmitter modulates the broadcast parameter message and provides the modulated broadcast parameter message to a terminal that receives the broadcast service.

Apparatus and method for providing broadcast parameter message in a mobile communication system

A method and apparatus for performing Reed-Solomon (R-S) coding in a mobile communication system supporting a broadcast and multicast (BCMC) service are provided, where a determination is made as to whether a change in a broadcast overhead message (BOM) exist including information with parameters used for the BCMC service. A position of data in a new channel encoder buffer is calculated at a time when the BOM is changed. The channel encoder buffer is filled with predetermined data in an interval ranging from a start point of a buffer comprising data in the change point of the BOM to a point preceding a point of data first transmitted according to the changed BOM.

Method and apparatus for performing data buffering for Reed-Solomon (R-S) coding/decoding in a mobile communication system

A method and apparatus for decoding inner and/or outer codes in a mobile communication system. The inner and/or outer codes are decoded at low power and high speed. An inner decoder performs channel decoding and cyclic redundancy checking (CRC) on symbols received through a wireless network. An outer decoder performs outer coding on the received symbols. An erasure symbol identifier outputs information of erasure symbols in which a reception error has occurred. The reception error is determined from a result of the CRC on the received symbols. A controller counts the number of received symbols and the number of erasure symbols, and stops an operation of at least one of the inner and outer decoders when at least one of the number of received symbols and the number of erasure symbols is equal to a preset reference value.

Method and apparatus for decoding inner and outer codes in a mobile communication system

A method and apparatus for transmitting and receiving a broadcast service in a mobile communication system which outer-codes frames for a plurality of broadcast services and Time Domain Multiplex (TDM)-transmits the outer-coded frames. A transmitter transmits a broadcast parameter message comprising information indicating a specific sub-buffer in which respective broadcast services are stored. A receiver for receiving the broadcast parameter message from the transmitter, and maps the sub-buffer to a corresponding sub-block mask based on the broadcast parameter message. The transmitter TDM-transmits the frames for the plurality of broadcast services per sub-block. The receiver selectively receives frames for a desired broadcast service using the sub-block mask and decodes the selectively received frames.

Growing community of inventors

Suwon-si, South Korea

Jong-hun Rhee