Communication device, communication method, and communication program

A communication device for performing a communication with a different communication device, the communication device comprising:

• a receiver that receives reception packets including information packets that contains information symbols and check packets that contains check symbols and divides each packet into a plurality of symbols, wherein the information packets and the check packets configure FEC (Forward Error Correction) codes;
• a first error detector that detects whether each packet of the reception packets is a normal reception packet or an abnormal reception packet;
• a first error correcting unit that generates a plurality of FEC decode candidates for each of the FEC codes and performs a first error correction on the plurality of FEC decode candidates, wherein each of the plurality of FEC decode candidates is configured by a normal symbol included in the normal reception packet and an uncertain symbol included in the abnormal reception packet and generated to have the uncertain symbol different from one another;
• and
• a second error correcting unit that corrects the FEC codes based on consistent results of the first error correction among a plurality of results of the first error correction that is performed on the plurality of FEC decode candidates by the first, error correcting unit.