An adaptive FEC with QoS provisioning for real-time traffic in LEO satellite networks Conference Paper uri icon


  • This paper presents an adaptive forward error correction (AFEC) protocol that provides a reliable communication service for real-time traffic over low-earth orbit (LEO) satellite networks. In time-varying wireless links, such as LEO satellite networks, a reliable channel estimation scheme with an appropriate code selection technique is essential for adaptive error-control systems. This paper proposes a new channel estimation scheme that uses receiver-initiated messages (ACKs, NAKs, and INCs). These messages feed back to the transmitter which then selects the code rate for sending packets. In addition, the scheme uses the concept of a dynamic transmittable code set by adjusting the maximum code rate in the set of possible codes from which the transmitter can select. In terms of throughput (from network provider's viewpoint) and packet error rate (from subscriber's viewpoint), performance results show that the proposed scheme guarantees the quality of service (QoS) requirements of real-time applications.

published proceedings

  • IEEE International Conference on Communications

author list (cited authors)

  • Cho, S., Goulart, A., Akyildiz, I. F., & Jayant, N.

complete list of authors

  • Cho, S||Goulart, A||Akyildiz, IF||Jayant, N

publication date

  • January 2001