Electronics and Telecommunications Research Institute

Bioneer Corporation

Korea Advanced Institute of Science and Technology

Nam Il Kim

Han Oh Park

Dae Ho Kim

You Sang Cho

Min Soo Kim

Min Jung Kim

Ji Won Han

Daeho Kim

Seung-Hwan Lee

Jong Kab Kim

Yang Won Lee

In-So Kweon

Ha Neul Kim

Eung Bae Kim

Yukyung Choi

Seung-Kwon Back

Soonmin Hwang

Jun Ho Jung

A method for decoding a low-density parity-check (LDPC) code, performed by a communication apparatus, includes: updating a variable node; determining n minimum values based on a min-sum algorithm (MSA); determining n indices based on the n minimum values; updating a check node using the n indices; calculating a log-likelihood ratio (LLR) value when the update of the check node is completed; and determining an information bit based on the LLR value.

Method and apparatus for decoding low-density parity-check code

A method of processing a transmission signal may comprise grouping a coded bit sequence including a plurality of coded bits into a plurality of groups; comparing indices of code bits belonging to a first group among the plurality of groups and indices of code bits belonging to a second group among the plurality of groups; configuring the coded bits belonging to the first group as higher bits among bits constituting each modulation symbol based on a result of comparing the indices of the coded bits; configuring the coded bits belonging to the second group as lower bits among the bits constituting each modulation symbol based on the result of comparing the indices of the code bits; and generating the each modulation symbol by using the higher bits and the lower bits.

Method and apparatus for transmitting and receiving signal using polar code in communication system

A depth estimating apparatus operated by at least one processor includes: a database which stores a photographed first color image, a training thermal image geometrically aligned with the first color image, and a second color image simultaneously photographed with the first color image as a training image set; and a training apparatus which trains a neural network in an unsupervised manner to output a chromaticity image and a binocular disparity image from the training thermal image. The training apparatus generates an estimated first color image from the second color image, the chromaticity image, and the binocular disparity image, and trains the neural network to minimize a difference between the estimated first color image and the photographed first color image.

Apparatus and method for depth estimation based on thermal image, and neural network learning method therefof

An automated cell-free protein production system comprises: a protein expression reaction unit comprising a reaction vessel that includes a plurality of dialysis tubes, each including a dialysis membrane and being open at its top; a reaction temperature control unit configured to heat or cool the reaction vessel; a pipette array comprising a plurality of pipettes and configured to suck or discharge solutions using the pipettes; a pipette array moving unit configured to move the pipette array in an upward and downward direction, a forward and backward direction or a left and right direction so as to move solutions; a protein purification unit including a magnetic field application device; and a multi-well plate mounting unit having mounted therein a multi-well plate kit configured to supply solutions that are used for protein production.

Apparatus for automatically preparing cell-free proteins and method for preparing proteins using same

Provided is a method of protein synthesis. The method of protein synthesis according to the present invention uses an automatic biological material purification apparatus including: a well plate kit; a heating part; and a magnetic field applying part, such that a plurality of target proteins may be more quickly and simply obtained as compared to target proteins obtained by using the existing method for expressing/purifying proteins through conventional cell culture, and a reproducible synthesis efficiency on the same proteins may be obtained due to no deviation between reaction wells.

Protein synthesis kit, and method for expressing and extracting proteins using automatic extraction equipment

Disclosed are a data rate matching method and apparatus for use in mobile communication systems that can perform parallel interleaving at a high speed without a collision between encoded data input in parallel. A set of first parameters (f) is calculated on the basis of a length (D) of encoded input data and a set of second parameters (f) is calculated on the basis of a set of prime numbers constituting a value of the length (D) of the input data. Interleaving is performed on the basis of the set of first parameters (f), the set of second parameters (f), and the length (D) of the input data.

Data rate matching method and apparatus for use in mobile communication systems

A Maximum A Posteriori (MAP) decoder and a MAP decoding method are provided. The MAP decoder includes a first metric operation unit, a first bit-width control unit, a second metric operation unit, a Log Likelihood Ratio (LLR) operation unit, and a second bit-width control unit. The first metric operation unit outputs a first metric data using an input data. The first bit-width control unit controls a bit-width of the first metric data according to a modulation scheme of the input data. The second metric operation unit outputs a second metric data using the first metric data having the controlled bit-width. The LLR operation unit outputs LLR data using the second metric data. The second bit-width control unit outputs decoding data by re-controlling the bit-width of the LLR data.

Method and apparatus for map decoding and turbo decoder using the same

A data derate matcher for supporting hybrid automatic repeat request (HARQ), includes a control parameter generation unit for generating control parameters to separate bits of an input bit stream e; and a bit separation unit for separating the bits of the input bit stream einto three types of bits streams vk, vk, and vk by modulus operation of each of the bits of the input bit stream and the control parameters. Further, the data derate matcher for supporting the HARQ includes address generators for generating addresses (j) of valid data to be used in deinterleavers with respect to data of each of the bit streams output from the bit separation unit; and subblock deinterleavers for sequentially inputting data corresponding to the addresses generated by the address generators to output decoded data.

Data derate matcher for supporting HARQ and method thereof

A symbol synchronization apparatus and method for synchronizing symbol digitally is disclosed. In the present invention, digital symbols are generated by an A/D converting unit. Based on digital symbols, a symbol timing value is calculated. The symbol timing value is used for determining a best symbol timing. According to the best symbol timing, a clock phase is determined and A/D converting unit uses newly determined clock for generating digital symbols. As a result, the present invention can perform an over-sampling process in higher resolution than a sampling frequency by using only one A/D converter. Therefore, the present invention may increase economic efficient and reduce complexity of hardware.

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Daejeon, South Korea

Nam Il Kim