대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
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레일리 페이딩 채널에서 이미지 전송을 위한 고속 LDPC부호를 적용한 OFDM 시스템

High-rate LDPC Coded OFDM System for Image Transmission over Rayleigh Fading Channel

  • 최상민 (대구대학교 정보통신공학과) ;
  • 문병현 (대구대학교 정보통신공학과)
  • 발행 : 2005.05.14
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초록

As a class of block codes, LDPC code with any desired code rate and code length is easily constructed. In OFDM system high data transmission is possible, In this paper, we examined the performance of four high-rate(0.75, 0.8, 0.889, 09412) LDPC coded OFDM in image transmission over Rayleigh fading channel. The high-rate of 0.9412 LDPC coded OFDM system obtained about 12dB gain over the OFDM at BER of $10^{-3}$ over Rayleigh fading channel. Also, the PSNR of code rate 0.9412 LDPC coded OFDM system at SNR=10dB is given by 18.8047dB where uncoded OFDM system gives 9.7303 dB.

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