The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Iterative Decoding for LDPC Coded MIMO-OFDM Systems with SFBC Encoding

주파수공간블록부호화를 적용한 MIMO-OFDM 시스템을 위한 반복복호 기법

  • 손인수 (명지대학교 통신공학과)
  • Published : 2005.05.01
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Abstract

A multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) system using low-density parity-check (LDPC) code and iterative decoding is presented. The iterative decoding is performed by combining the zero-forcing technique and LDPC decoding through the use of the 'turbo principle.' The proposed system is shown to be effective with high order modulation and outperforms the space frequency block code (SFBC) method with iterative decoding.

본 논문에서는 주파수공간블록부호 (Space Frequency Block Code)를 적용한 다중송수신(Multiple Input Multiple Output)-OFDM(Orthogonal Frequency Division Multiplex) 시스템을 위한 반복복호 기법을 제시한다. 제시된 반복복호 기법은 zero-forcing 알고리즘과 LDPD 부호화 알고리즘을 터보 기법을 바탕으로 상호보완을 할 수 있도록 설계되었다. 시뮬레이션 결과에 의하면 고차원 변조방식을 적용한 MIMO-OFDM 페이딩 채널에서 기존의 시스템과 비교하여 향상된 성능을 확인하였다.

Keywords

References

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