Samsung Electronics Co., Ltd.

Chang-hoon Choi

Jung-hyun Park

Sung-kyu Jung

Sung-woo Park

Min-ho Kim

Doo-chan Hwang

Jung-pil Yu

Sung-il Park

Chang-Wook Moon

Joo-sung Park

Jung-Il Han

Soon-chan Kwon

Sidorkin Vadim

A receiving apparatus includes: a first decoder configured to decode a signal transmitted through a first layer from a layered division multiplexing (LDM) signal using a parity check matrix to generate low density parity check (LDPC) information word bits and parity bits; an encoder configured to encode the LDPC information word bits, generated by decoding the signal transmitted through the first layer, using the parity check matrix to generate parity bits corresponding only to preset columns in the parity check matrix; and a second decoder configured to decode a signal obtained by removing, from the LDM signal, a signal corresponding to the LDPC information word bits generated by decoding the signal transmitted through the first layer, the parity bits generated by the encoder, and the parity bits generated by the first decoder except the parity bits generated by the encoder, thereby to generate information word bits transmitted through a second layer.

Receiving apparatus and decoding method thereof

A transmitting apparatus is provided. The transmitting apparatus includes: an L1 signaling generator configured to generate L1 signaling including first information and second information; a frame generator configured to generate a frame including a payload including a plurality of sub frames; and a signal processor configured to insert a preamble including the L1 signaling in the frame and transmit the frame. The first information includes information required for decoding a first sub frame among the plurality of sub frames. Therefore, a processing delay in a receiving apparatus is reduced.

Transmitting apparatus, receiving apparatus, and control methods thereof

A transmitting apparatus is provided. The transmitting apparatus includes: an Lsignaling generator configured to generate Lsignaling including first information and second information; a frame generator configured to generate a frame including a payload including a plurality of sub frames; and a signal processor configured to insert a preamble including the Lsignaling in the frame and transmit the frame. The first information includes information required for decoding a first sub frame among the plurality of sub frames. Therefore, a processing delay in a receiving apparatus is reduced.

Apparatuses and methods for encoding, transmitting, receiving and decoding signal frames are provided. A transmitting apparatus includes: a frame encoder configured to perform Reed Solomon (RS) encoding on a plurality of frames in a vertical direction, wherein the frame encoder divides the plurality of frames into a plurality of groups, performs RS encoding for each group so that parities are added after the last frame of each group, and generates the RS-encoded frames. A receiver includes: a frame decoder configured to perform RS decoding on a plurality of received frames in a vertical direction, wherein the frame decoder divides the plurality of received frames into a plurality of groups, and performs RS decoding for each group to obtain information words without the parities.

Transmitting apparatus, encoding method thereof, receiving apparatus, and decoding method thereof

A channel decoding method is provided. The method includes storing, in a memory, a set of first log likelihood ratio (LLR) values corresponding to bits of a codeword generated by modulation of a channel-encoded signal; changing, into a preset value, at least one LLR value corresponding to previously defined bits of the codeword from among the set of the first LLR values, to generate a set of second LLR values; and performing forward error correction (FEC) based on the set of the second LLR values and an FEC code, to estimate the bits of the codeword, in which the FEC code comprises a constraint code for constricting a previously defined structural correlation between the bits of the codeword.

Channel decoding method and apparatus using structured priori information of preamble

A method for projecting a predetermined pattern of an electron beam from an emitter to a wafer in a vacuum chamber of an electron-beam lithography system is provided. An initial condition for performing an electromagnetic focusing is first set and outspread phenomenon of the electron beam, which is caused by an initial emitting velocity difference and an initial emitting angle difference between electrons emitted from the emitter, is corrected. Then, a shift of the electron beam, which is caused when an electric field is not in parallel with a magnetic field, is corrected and a shift of the electron beam, which is caused by a gradient of the magnetic field, is corrected, after which an increase of a beam diameter of the electron beam, which is caused by Coulomb-interaction between the electrons emitted from the emitter, is corrected. Then, it is determined if a focusing error is within a range of an allowable error. When it is determined the focusing error is out of the range of the allowable error, the above operations are repeated.

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Yongin-si, South Korea

Chang-hoon Choi