The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Application of Block Turbo Code for Improving the Performance of 5 ㎓ IEEE 802,11a WLAN System

5 ㎓대 IEEE 802.11a WLAN 시스템의 성능향상을 위한 블록터보코드(Block Turbo Code)의 응용

  • 김한종 (한국기술교육대학교 대학원 전기전자공학과) ;
  • 이병남 (한국기술교육대학교 대학원 전기전자공학과)
  • Published : 2004.01.01
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Abstract

In this paper we apply block turbo coding at the transmitter and iterative decoding algorithm at the receiver for different operating modes, based on the 5 ㎓ IEEE 802.1 la WLAN system, instead of convolutional coding and soft decision viterbi algorithm to improve forward error correcting performance. Experimental results showed that each coding scheme outperforms coding gains of up to 3.5 ㏈ at the BER of 10$\^$-3/.

본 논문에서는 5 ㎓대 IEEE 802.11a WLAN 시스템의 채널 부호화와 복호화 방법으로 길쌈부호기(con-volutional code)와 연판정(soft decision) 비터비 복호기를 사용하는 기존의 방식 대신에 에러정정 능력을 높이기 위하여 송신단에서는 블록터보코드(Block Turbo Code)를 사용하여 채널을 부호화를 하고 수신단에서는 반복(iterative) 복호 알고리즘을 사용하여 복호하는 방법을 WLAN 시스템에 적용시킨 시스템 모델을 제안하고 성능을 비교 분석한다. 실험 결과 기존의 방법보다 본 논문에서 제안한 방법을 WLAN 시스템에 적용 시각 전송속도에 따라 2.5 ㏈∼3.5 ㏈의 성능효과를 보였다.

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