IEEE 802.11 MAC-level FEC scheme with retransmission combining

Sunghyun Choi, Youngkyu Choi, Inkyu Lee

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


In this paper, we evaluate and enhance the performance of a Forward Error Correction (FEC) scheme for IEEE 802.11 Medium Access Control (MAC). A novel retransmission combining technique is proposed to enhance the performance of the MAC-level FEC scheme. We also identify the problem with the IEEE 802.1 la physical (PHY) layer when it is used with the MAC-level FEC. A new PHY frame format, backward compatible with the original format, is proposed to resolve the problem. Finally, we analytically evaluate the error performance of the MAC-level FEC, and its enhanced performance via retransmission combining and new 802.11a PHY frame format in AWGN environment. Additionally, we present and discuss the results from simulations using TCP/UDP traffic in more realistic channel environments.

Original languageEnglish
Pages (from-to)203-211
Number of pages9
JournalIEEE Transactions on Wireless Communications
Issue number1
Publication statusPublished - 2006 Jan


  • IEEE 802.11 WLAN
  • IEEE 802.11a PHY
  • MAC-level FEC
  • Reed-Solomon (RS) code
  • Retransmission combining

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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