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Performance Improvements of WiBro System Using the 64QAM SOFM Prefiltering

64QAM SOFM 전처리기를 이용한 와이브로 시스템의 성능 개선

  • 박진우 (tbs 서울 교통방송 뉴미디어국)
  • Received : 2010.03.11
  • Accepted : 2010.03.24
  • Published : 2010.05.31

Abstract

WiBro(Wireless Broadband Internet) is the standard of high-speed portable internet based on OFDMA/TDD (Orthogonal frequency division multiple access / Time division duplexing) techniques, and the subset of consolidated version of IEEE802.16e Wireless MAN standard. In this paper, we propose performance improvements of WiBro system using the 64QAM SOFM(Self-Organizing Feature Maps)prefiltering. Proposed method used the prefiltering SOFM neural network blind equalization in the Broadband 64 QAM WiBro system receiver. The prefiltering SOFM neural network constellates 64QAM that is transmitter data shape and the blind equalization removes ICI(Inter Carrier Interference). To verificate the proposed method usability, the MSE and the BER are simulated. The simulation results shown that is improved the performances of the proposed WiBro system using the 64QAM SOFM Prefiltering than the existing WiBro system.

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