Systems and methods for network coding using convolutional codes

摘要

A network coding method includes receiving a plurality of message packets each having a packet length. Encoding the plurality of message packets by applying a convolutional code across symbols in corresponding positions of the plurality of message packets obtaining a number of encoded packets. The number of encoded packets obtained being more than the number of message packets.

主权项

1. A network decoding method for decoding a plurality of encoded packets encoded with a convolutional network encoder, the method comprising:
receiving, by a processor, a plurality of packets from an error checker wherein the plurality of packets comprise recovered packets and at least one erased packet; applying, by the processor, a Viterbi decoder to symbols in corresponding positions of a concatenated block of the plurality of packets equal to a coding depth resulting in a number of decoded packets, wherein the decoded packets correspond to a number of message packets; and replacing, by the processor, the erased packet with a null packet; and multiplying, by the processor, the symbols in the erased packets by zero and the symbols in the recovered packets by a scaling factor.