Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A New Peak-Windowing Algorithm with Window-length Adaptation for PAPR Reduction of OFDM Systems

OFDM 시스템의 PAPR 저감을 위한 가변적인 윈도우 크기를 적용한 Peak Windowing 기법

  • Lee, Sung-Eun (Center for Information Technology of Yonsei University (CITY), Info. & Telecom. Lab.) ;
  • Bang, Keuk-Joon (Department of Internet & TV, Induk Institute of Technology) ;
  • Park, Myong-Hee (Center for Information Technology of Yonsei University (CITY), Info. & Telecom. Lab.) ;
  • Lee, Young-Soo (Bundang Research Center, SK Telecom) ;
  • Hong, Dae-Sik (Center for Information Technology of Yonsei University (CITY), Info. & Telecom. Lab.)
  • 이성은 (연세대학교 전기전자공학과) ;
  • 방극준 (인덕대학교 인터넷 TV 방송학과) ;
  • 박명희 (연세대학교 전기전자공학과) ;
  • 이영수 (SK Telecom 분당 중앙연구소) ;
  • 홍대식 (연세대학교 전기전자공학과)
  • Published : 2005.11.26
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Abstract

This paper proposes a new peak-windowing algorithm with window-length adaptation for peak-to-average power reduction (PAPR) of orthogonal frequency division multiplexing (OFDM) systems. Conventional peak windowing algorithm has advantages, such as moderate system complexity with good spectral shape. However, adjacent peak signals within the length of window functions produce the distortion of signal amplitude since window functions might overap with each other. These undesired characteristics of conventional peak windowing algorithm result in the degradation of BER performance. The proposed algorithm outperforms the conventional one with the aid of window-length adaptation. Simulation results show the efficiency of the proposed algorithm under the environments of WiBro downlink systems.

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