Apparatus and method for adaptive hybrid ARQ concatenated FEC

An adaptive hybrid ARQ method using a concatenated FEC, wherein a reception procedure comprises:

• receiving a first transmission packet from a transmitter and storing it in a buffer;
• dividing the first transmission packet into a first header and a first payload using a perforation pattern corresponding thereto;
• decoding the first header and first payload and carrying output error detection;
• when there is any error detected, reporting error generation to the transmitter;
• receiving a second transmission packet which was combined with a different perforation pattern and transmitted, after error generation is reported;
• decoding the second transmission packet into a second header and a second payload and performing error detection;
• when any error is detected in the error detecting step, combining the first and second headers and combining the first and second payloads, to generate a first combined header and a first combined payload;
• and
• decoding the first combined header and the first combined payload, and performing error detection.

An adaptive hybrid ARQ method using a concatenated FEC, comprising:

• puncturing a data packet to be transmitted to divide it into a first and second combined packets, encoding them with first perforation patterns different from each other, to generate a first and second transmission packets;
• selecting one of the first and second transmission packets and transmitting it to a receiver;
• the receiver generating a third combined packet using a perforation pattern corresponding the first transmission packet when it receives the first transmission packet;
• generating a first header packet and a first payload packet from the third combined packet and performing a first error detection;
• when any error is detected in the first error detection step, a transmitter sending the second transmission packet to the receiver, and the receiver generating a fourth combined packet using a perforation pattern corresponding to the second transmission packet;
• generating a second header packet and a second payload packet from the fourth combined packet and performing a second error detection;
• when any error is detected in the second error detection step, combining the first header packet with the second header packet, combining the first payload packet with the second payload packet, and performing a third error detection in the each combined packet;
• and
• when any error is not detected in the first, second and third error detection steps, completing data transmission.

An adaptive hybrid ARQ apparatus using a concatenated FEC, the apparatus having a transmitter, the transmitter comprising:

• an RS encoder for dividing transmission data into a header and payload and encoding each of them into an RS code;
• an interleaver for generating header packets and payload packets corresponding to code rates by puncturing a signal encoded by the RS encoder, combining each header packet with each payload packet, and interleaving the combined packets;
• and
• a CPC encoder for combining the interleaved packets with different perforation patterns.

An adaptive hybrid ARQ apparatus using a concatenated FEC, the apparatus having a receiver, the receiver comprising:

• a buffer for storing transmission packets received from a transmitter;
• a CPC decoder for decoding the transmission packets stored in the buffer using different perforation patterns;
• a deinterleaver for deinterleaving a signal generated by the CPC decoder, to generate header packets and payload packets;
• and
• an RS decoder for decoding the header packets and payload packets generated by the deinterleaver into RS codes.