Samsung Electronics Co., Ltd.

Postech Academy-industry Foundation

Postech Research and Business Development Foundation

Kyeongcheol Yang

Hong-Sil Jeong

Dong-Min Shin

Daeyeol Yang

Junjin Kong

Kijun Lee

Jiwon Park

Sunghye Cho

Seok-Ki Ahn

Seung-Chan Lim

Min Hee Jang

Kyung-Joong Kim

Se-ho Myung

Kyung-joong Kim

Jae-Yoel Kim

Hyun-Koo Yang

Hong Rak Son

Hak-Ju Lee

Sung-ryul Yun

Min Jung Jang

Se-Ho Myung

Sung-Ryul Yun

Myungkyu Lee

Hongsil Jeong

Youngjun Hwang

Hyeon-Koo Yang

A method and a device for transmitting a signal by using a polar code are provided. The method includes generating a first codeword by applying the polar code to an input signal, dividing the first codeword into a plurality of partial vectors, allocating a shaping bit to the input signal when at least one of the plurality of partial vectors does not satisfy a preset Hamming weight condition, generating a second codeword by applying the polar code to the input signal to which the shaping bit is allocated, and transmitting a signal based on the second codeword.

Method of transceiving signal by using polar code and device for performing the method

The present disclosure relates to a pre-5-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4-Generation (4G) communication system such as Long Term Evolution (LTE). A method for operating a transmitting stage in a wireless communication system includes generating a signal by encoding an input bit sequence according to polar code determined from a linear code, and transmitting the signal to a receiving stage. The input bit sequence includes a second frozen bit which is determined based on a first frozen bit and an information bit. The first frozen bit and the information bit precede the second frozen bit in the input bit sequence.

Apparatus and method for determining polar code in wireless communication system

A communication scheme and system for converging a 5generation (5G) communication system for supporting a data rate higher than that of a 4generation (4G) system with an internet of things (IoT) technology are provided. The present disclosure is applicable to intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, and security and safety-related services) based on the 5G communication technology and the IoT-related technology. The disclosure relates to a punctured polar code design method and apparatus and proposes optimal puncturing pattern and information set selection criteria for designing punctured polar codes.

Method and apparatus for design of punctured polar codes

An error correction device includes a low density parity check (LDPC) decoder and an adaptive decoding controller. The LDPC decoder iteratively performs LDPC decoding on data by using a decoding parameter. The adaptive decoding controller calculates an error rate depending on a result of the LDPC decoding and adjusts the decoding parameter depending on the error rate.

Error correction device, operating method of error correction device, and controller including error correction device

The present disclosure relates to a pre-5-Generation (5G) or 5G communication system for supporting higher data rates Beyond 4-Generation (4G) communication systems such as Long Term Evolution (LTE). A method for operating a receiver in a wireless communication system may include: receiving a signal from a transmitter; performing Integer Forcing (IF) equalization on the received signal; determining a log LikeLihood Ratio (LLR) value of each bit by using a posteriori probability of each bit for the signal determined based on an equalization matrix and a likelihood value for the signal; and decoding the signal by using the LLR value.

Apparatus and method for processing signal in wireless communication system

A transmitter, a receiver and signal processing methods are provided. The transmitter includes: an encoder configured to perform encoding on an information word based on a parity check matrix to generate a codeword including a plurality of non-binary symbols; an interleaver configured to interleave the codeword; and as modulator configured to modulate the interleaved codeword to generate a plurality of modulation symbols. The interleaver is configured to interleave the codeword such that the modulator maps a predetermined non-binary symbol from among the plurality of non-binary symbols constituting the codeword to a predetermined position in a modulation symbol among the plurality of modulation symbols.

Transmitter, receiver, and signal processing method thereof

An operating method of a controller includes selecting bits of code word to be punctured; detecting locations of incapable bits of an input word based on locations of the bits to be punctured and a structure of a generation matrix calculation unit; refreezing the input word such that frozen bits and incapable bits of the input word overlap; generating input word bits by replacing information word bits with frozen bits based on the refreezing result; generating the code word by performing generation matrix calculation on the input word bits; generating output bits by puncturing the code word based on locations of the bits to be punctured; and transmitting the output bits to a nonvolatile memory device.

Controllers that generate output bits for storage in non-volatile memory devices by puncturing code word bits and methods for operating the same

An operating method of a nonvolatile memory device controller includes generating a code word through polar encoding of information bits, reading a mapping pattern, generating a repeated mapping pattern through iteration of the mapping pattern, and mapping each bit of the code word onto a specific bit of multi-bit data of the nonvolatile memory device, based upon the repeated mapping pattern.

Operating method of controller controlling nonvolatile memory device and mapping pattern selecting method of selecting mapping pattern mapping polar coded code word with multi bit data of nonvolatile memory device

A method and an apparatus for puncturing bits in parity bit groups in a digital broadcasting system are provided. In a method for transmitting signaling information in a digital broadcasting system, a received information bit stream is encoded and a parity bit is added. The parity bit is punctured such that parity bits of different patterns are formed between adjacent frames.

Method and apparatus for transmitting signaling information in digital broadcasting system

An apparatus for transmitting data in a communication system using a Low Density Parity Check (LDPC) matrix is provided. The apparatus includes an interleaver for interleaving a descending bit-ordered codeword having a predetermined size and in accordance with a predetermined modulation scheme; and a bit mapper for mapping codeword bits constituting the interleaved codeword in accordance with a predetermined mapping scheme that takes into account degrees of the codeword bits and reliability characteristics of modulation symbol-constituting bits based on the predetermined modulation scheme.

Growing community of inventors

Pohang-si, South Korea

Kyeongcheol Yang