Samsung Electronics Co., Ltd.

Postech Academy-industry Foundation

Postech Foundation

Kyeong-Cheol Yang

Jae-Yoel Kim

Hong-Sil Jeong

Se-Ho Myung

Hyun-Koo Yang

Dong-seek Park

Gyu-Bum Kyung

Sung-Eun Park

Seho Myung

Hee-Won Kang

Seung-Hoon Choi

Kyung-Joong Kim

Jong-Seon No

Young-Ky Kim

Jun-Jin Kong

Hak-Ju Lee

Hwan-Joon Kwon

Chi-Woo Lim

Jae-min Ahn

Chang-soo Park

Seok-Ki Ahn

Young-Ho Kim

Sung-ryul Yun

Dong-Seek Park

Pan-Yuh Joo

Sung-Oh Hwang

Yeon-Ju Lim

Jae-Min Ahn

Ha-Bong Chung

Hyun-Gu Yang

Sung-Ho Choi

Soon-Young Yoon

Seung-Joo Maeng

Peter Jung

Sung-Ryul Yun

Myung-Kyu Lee

Jae-Yeol Kim

Hyun-Woo Lee

Sang-Min Kim

Min Sagong

Dong-Min Shin

Sung-Nam Hong

Woo-Myoung Park

Joong-Ho Jeong

Kwang-Wook Lee

Ki-Jun Lee

Young-Kyun Kim

Seung-Hyun Kong

Seung-Chan Lim

Gyu Bum Kyung

Young-Uk Do

Hyeon-Gu Yang

Hee-Woon Kang

A method and an apparatus for performing a Superposition Coded Modulation (SCM) scheme in a broadcasting or communication system including a controller are provided. The method includes controlling an SCM coefficient by the controller. The SCM coefficient is controlled according to a channel capacity of each layer of one or more layers in which information included in a signal is encoded.

Method and apparatus for performing superposition coded modulation scheme in a broadcasting or communication system

Provided is a method for decoding a non-binary (NB) low density parity check (LDPC) code at a user equipment (UE) that implements at least one variable nodes that receive a received signal of a wireless channel and deliver an input message to a check node and the check node that checks the input message and outputs an output message. The method includes receiving at least one input messages, generating a temporary vector by using the at least one input messages, searching for an element having a dominant value by checking the temporary vector, generating a configuration set, which is a check target, by using the element having the dominant value, and generating the output message by performing comparison with respect to the generated configuration set.

Decoding method, apparatus, and algorithm for nonbinary LDPC codes

A list decoding method for a polar code includes generating a tree-type decoding graph for input codeword symbols; the generating a tree-type decoding graph including, generating a decoding path list to which a decoding edge is added based on a reliability of a decoding path, the decoding path list being generated such that, among decoding paths generated based on the decoding edge, decoding paths within a threshold number of critical paths survive within the decoding path list in an order of high likelihood probability, and determining an estimation value, which corresponds to a decoding path having a maximum likelihood probability from among decoding paths of the decoding path list, as an information word.

List decoding method for polar code and memory system using the same

A method of decoding a non-binary Low Density Parity Check (LDPC) code is provided. The method includes a plurality of messages to perform hard decision for all messages except for one message, and combines the hard-decided values with the one message that is not hard-decided, to update a final output message.

Method and apparatus for decoding non-binary parity check code

A system and method for processing a block Low Density Parity Check (LDPC) code are provided. The system includes, a decoding apparatus for decoding a block LDPC code using a parity check matrix, the parity check matrix including an information part and a parity part, the parity part including a first section (B) including a plurality of first permutation matrices, a second section (D) including a second permutation matrix, a third section (T) including a plurality of identity matrices (I) arranged diagonally within the third section and a plurality of third permutation matrices arranged below the plurality of identity matrices, and a fourth section (E) including a fourth permutation matrix.

Apparatus and method for coding/decoding block low density parity check code in a mobile communication system

A method for channel coding by a transmitter in a communication system is provided. The method includes determining a degree of coded bits of a Luby-Transform (LT) code based on a coding rate of a pre-code and the number of coded bits of the LT code, selecting at least one associated bit used for coding of the coded bits of the LT code from among information bits of the LT code, depending on the determined degree, and generating the coded bits of the LT code by applying a coding function to the selected associated bits.

Apparatus and method for channel coding in a communication system

A matrix multiplier multiplies the signal output from a first adder by an inverse matrix Tof a partial matrix T of a parent parity check matrix, and outputs the multiplication result to a first switch. The output of the matrix multiplier becomes a second parity vector P. A second switch is switched on at a transmission time of the information word vector 's', a third switch is switched on at a transmission time of the first parity vector P, and the first switch is switched on at a transmission time of the second parity vector P. When a puncturing scheme is applied to the parent parity check matrix, a controller controls the first and second switches to puncture the parity according to the corresponding coding rate.

Apparatus and method for encoding and decoding block low density parity check codes with a variable coding rate

An apparatus and method for compensating for phase noise in a receiver supporting Orthogonal Frequency Division Multiplexing (OFDM) by receiving a frequency-domain recovered signal and a time-domain received signal, estimating an average phase noise for each of the partial blocks of the signals, calculating an overall average phase noise using the average phase noises of the partial blocks, and removing the phase noise from the time-domain received signal using the calculated total average phase noise.

Apparatus and method for compensating for phase noise in a receiver supporting OFDM

An apparatus and method for generating a parity-check matrix of a Low-Density Parity-Check (LDPC) code are provided. Parameters for designing the LDPC code are determined, and a first parity-check matrix of a quasi-cyclic LDPC code is formed according to the determined parameters. A second parity-check matrix is created through the elimination of a predetermined portion of a parity part in the first parity-check matrix, and a third parity-check matrix is created by rearranging the second parity-check matrix.

Apparatus and method for encoding and decoding channel in a communication system using low-density parity-check codes

A method for encoding a channel in a communication system using a Low-Density Parity-Check (LDPC) code is provided. The method includes determining a number of parity bits for puncturing; dividing the parity bits at predetermined intervals, and determining a number of puncturing parity bits, which are subjected to puncturing within the predetermined intervals; determining a modulation scheme; determining positions of puncturing parity bits corresponding to the determined number of the puncturing parity bits within the predetermined intervals according to the modulation scheme; repeatedly performing puncturing on puncturing parity bits corresponding to the determined positions at the predetermined intervals; and transmitting remaining bits except for the punctured bits according to the modulation scheme.

Method and apparatus for channel encoding and decoding in a communication system using low-density parity-check codes

An apparatus and method for transmitting/receiving a signal in a communication system are provided. The method includes inputting an information word during initial transmission and transmitting a first code word created by encoding the inputted information word based on a first coding ratio, and transmitting a portion of a second code word created by encoding the first code word based on a second coding ratio at a retransmission request. Accordingly, the apparatus and method provide for transmitting/receiving signals in a communication system in such a manner that the complexity of the communication system is reduced.

Apparatus and method for transmitting/receiving signal in communication system

A method for transmitting data in a communication system using a Low Density Parity Check (LDPC) matrix includes generating an LDPC codeword by encoding information data bits, interleaving the LDPC codeword, mapping the interleaved LDPC codeword to a modulation signal, and generating a mapped signal by mapping the LDPC codeword bits separately to a bit corresponding to a real part and a bit corresponding to an imaginary part of said modulation signal, among bits constituting the modulation signal, generating a modulation signal by high-order-modulating the mapped signal and Radio Frequency (RF)-processing the modulation signal, and transmitting the RF-processed signal via a transmission antenna.

Apparatus and method for transmitting and receiving data in a communication system using low density parity check code

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Seoul, South Korea

Kyeong-Cheol Yang