System and technique for sliding window network coding-based packet generation

A decoder for decoding packetized data in the presence of packet erasures, the decoder comprising:

• a buffer for receiving a coded symbol from a coded packet comprising a packet sequence number, a coefficient vector having a fixed length w, and the coded symbol encoded as a linear combination of w input symbols using the coefficient vector;
• a register for storing a decoder sequence number;
• a determining unit for determining whether the packet sequence number is within a sliding window of w consecutive sequence numbers that are no greater than the decoder sequence number stored in the register;
• and
• a decoding module for decoding, when the determining unit determines that the packet sequence number is within the sliding window, the received coded symbol into one or more of the w input symbols using the coefficient vector.

A decoder for decoding packetized data in the presence of packet erasures, the decoder comprising:

• receiving means for receiving a coded symbol from a coded packet comprising a packet sequence number, a coefficient vector having a fixed length w, and the coded symbol encoded as a linear combination of w input symbols using the coefficient vector;
• storing means for storing a decoder sequence number;
• determining means for determining whether the packet sequence number is within a sliding window of w consecutive sequence numbers that are no greater than the decoder sequence number stored in the register;
• and
• decoding means for decoding, when the determining unit determines that the packet sequence number is within the sliding window, the received coded symbol into one or more of the w input symbols using the coefficient vector.