Extension of coefficients for (n, k, m) convolutional-code-based packet loss recovery 1

This paper discusses a new idea for improving the recovery of (n, k, m) convolutional-code-based packet-level FEC. We extend the coefficients in the generator matrix to the elements on GF(28). Each byte in the redundant packets is generated independently, assuming the bytes are the elements on GF(28). The postreconstruction receiving rate is analytically derived from the necessary conditions for recovery. Moreover, the ability to recover lost packets is estimated based on analysis, and we demonstrate that the extension of coefficients improves the number of recovered packets more than the conventional method where coefficients are 0 or 1.