Efficient Forward Error Correction for Reliable Transmission in Packet Networks

摘要

This paper proposes an approach that utilizes a new forward error correction mechanism for reconstructing lost or corrupted packets sent over a Network. Instead of retransmissions of lost or corrupted packets, the new approach depends on sending extra packets with each group of packets in order to reconstruct lost or corrupted packets. This approach is based on applying a high-performance irregular array code called REA for tolerating up to two lost packets. If the numbers of losses is more than 2, Go-Back-N automatic repeat request (ARQ) mechanism is used. This approach is useful for improving the performance of TCP over less reliable communication links like wireless networks. The paper employs a hybrid approach that takes advantage of and efficient erasure code at the link layer for error correction together with packet recovery through retransmission to enhance the system performance. The paper presents simulation results that evaluate the effectiveness of the proposed approach.