A Modified Medium Access Control Algorithm for Systems with Iterative Decoding

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Efficient transmission methods for fading radio channels often require an iterative decoder. This is for example the case for systems using turbo codes. Receiver decoder iterations could potentially lead to a latency problem which impacts the performance of the medium access control protocol. In this paper, we present modifications based on the carrier sense multiple access with collision avoidance (CSMA/CA) medium access control (MAC) protocol to accommodate the increased latency in the iterative processing. One area of applications is wireless local area networks (WLANs) with high data rate. The simulation results performed in the IEEE 802.11a WLAN environment by replacing the 802.11a's convolutional coding with turbo coding demonstrate that the proposed algorithm provides a throughput gain over the conventional method.

Original languageEnglish
Pages (from-to)270-273
Number of pages4
JournalIEEE Transactions on Wireless Communications
Issue number2
Publication statusPublished - 2006 Feb

Bibliographical note

Funding Information:
Manuscript received May 11, 2003; revised April 12, 2004; accepted May 7, 2005. The associate editor coordinating the review of this letter and approving it for publication was T. Boucouvalas. This research was supported by the Ministry of Information and Communication (MIC), Korea, under the Information Technology Research Center (ITRC) support program, supervised by the Institute of Information Technology Assessment (IITA). I. Lee and W. Lee are with Korea University, Seoul, Korea (e-mail: {inkyu, wlee}@korea.ac.kr). C.-E. Sundberg is with SundComm, USA (e-mail: cews@ieee.org). S. Choi is with Seoul National University, Seoul, Korea (e-mail: schoi@snu.ac.kr). Digital Object Identifier 10.1109/TWC.2006.02003.


  • Medium access control
  • WLAN
  • iterative decoding

ASJC Scopus subject areas

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


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