Transmitter and puncturing method thereof

摘要

Provided are a transmitter for processing an L1 signaling including an L1-pre signaling and an L1-post signaling, a receiver of the L1 signaling, and methods of controlling the transmitter and the receiver. The transmitter includes: an encoder configured to perform Bose, Chaudhuri, Hocquenghem (BCH) encoding and Low Density Parity Check (LDPC) encoding with respect to the L1-post signaling, and a puncturing unit configured to puncture at least a part of LDPC parity bits constituting an LDPC codeword generated by the LDPC encoding of the L1-post signaling, wherein the number of bits to be punctured is calculated based on the number of bits available for transmission of the LDPC codeword and a modulation order of the L1-post signaling.

主权项

1. A transmitter for processing a signaling comprising a first-type signaling and a second-type signaling, the transmitter comprising:
an encoder configured to encode the first-type signaling using a Bose, Chaudhuri, Hocquenghem (BCH) code and a Low Density Parity Check (LDPC) code to generate BCH parity bits and LDPC parity bits; a puncturing unit configured to puncture at least a part of the LDPC parity bits among an LDPC codeword comprising the first-type signaling, the BCH parity bits and the LDPC parity bits; and a transmitting unit configured to interleave, modulate and transmit the LDPC codeword output from the puncturing unit, wherein a number of bits to be punctured by the puncturing unit is calculated based on a number of bits available for transmission of the LDPC codeword and a modulation order of the first-type signaling, and wherein the number of bits available for transmission of the LDPC codeword is calculated based on a number of cells to which the first-type signaling and the second-type signaling are mapped, a number of bits of the second-type signaling and a modulation order of the second-type signaling.