Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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AMC with predicted CQI in packet-based wireless systems

  • Kim, Myoung-Seob (School of Electrical Engineering and INMC Seoul National University) ;
  • Lee, Yong-Hwan (School of Electrical Engineering and INMC Seoul National University)
  • Published : 2006.06.21
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Abstract

In a packet based wireless system, an adaptive modulation and coding (AMC) scheme is often employed with the use of channel quality information (CQI). However, the AMC can be operated improperly due to delayed CQI, causing performance degradation. In this paper, we consider the use of predicted CQI for the AMC considering the feedback delay and channel characteristics. We also consider the use of a hybrid automatic repeat request scheme with the proposed AMC for further improvement in high mobility environments.

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