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DOI QR Code

Analysis of Mobile System using Adaptive Modulation Method by Channel Forecast

채널예측에 의한 적응변조방식을 이용한 모바일 시스템 분석

  • Lee, Myung-Soo (Department of Multimedia Engineering, Andong University) ;
  • Cho, Dae-Jea (Department of Multimedia Engineering, Andong University)
  • 이명수 (안동대학교 멀티미디어공학과) ;
  • 조대제 (안동대학교 멀티미디어공학과)
  • Received : 2010.12.07
  • Accepted : 2011.02.10
  • Published : 2011.02.28

Abstract

To improve drawback of existing modulation method, in this paper, we propose the channel forecast method using adaptive modulation which can improve throughput of channel. This method adaptively changes modulation method to the change of channel environments. In proposed method, channel's characteristics are measured in realtime to determine code rate to the changes of demanded channel's bit error rate. If bit error rate is increased, this method reduce code rate to maintain maximum throughput. We analysis performance of proposed method by Matlab.

Keywords

QPSK;Auto repeat request;Forward error correction

Acknowledgement

Supported by : 안동대학교

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