Apparatus and method for transmitting/receiving data in communication system

An apparatus for receiving data in a communication system, the apparatus comprising:

• a reception unit configured to receive a multi-user data packet including data to be transmitted to a plurality of users;
• a decoding unit configured to decode, using a processor, the multi-user data packet, the multi-user data packet corresponding to a BCC and an LDPC code;
• and
• a recovery unit configured to recover, using a processor, the decoded multi-user data packet to data corresponding to the plurality of users,
• wherein the decoding unit performs BCC decoding on the multi-user data packet, and then performs LDPC decoding on the BCC decoded multi-user data packet
• wherein the decoding unit decodes the multi-user data packet in which an MPDU subframe corresponding to one of the plurality of users is encoded as the LDPC code.

A method for transmitting data in a communication system, the method comprising:

• generating a multi-user data packet including data to be transmitted to a plurality of users, the multi-user data packet including a plurality of MPDU subframes, the plurality of MPDU subframes corresponding to the plurality of users;
• encoding the multi-user data packet as a BCC and an LDPC code;
• and
• transmitting the encoded multi-user data packet to the plurality of users,
• wherein said encoding of the multi-user data packet comprises:
• performing LDPC encoding on the multi-user data packet;
• and
• performing BCC encoding on the LDPC encoded multi-user data packet, and
• wherein said encoding of the multi-user data packet comprises encoding an MPDU subframe in the multi-user data packet that corresponds to one of the plurality of users, as the LDPC code, and calculating information on a length in the LDPC encoding, corresponding to the encoding of the multi-user data packet as the LDPC code.

A method for receiving data in a communication system, the method comprising:

• receiving a multi-user data packet including data to be transmitted to a plurality of users;
• decoding the multi-user data packet, corresponding to a BCC and an LDPC code;
• and
• recovering the decoded multi-user data packet to data corresponding to the plurality of users,
• wherein said decoding of the multi-user data packet comprises:
• performing BCC decoding on the multi-user data packet;
• and
• performing LDPC decoding on the BCC decoded multi-user data packet,
• and
• wherein said decoding of the multi-user data packet comprises decoding the multi-user data packet in which an MPDU subframe corresponding to each one of the plurality of users are encoded as the LDPC code, using information on a length in the LDPC encoding corresponding to the encoding of the multi-user data packet as the LDPC code.