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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Performance Analysis of the Pre-Equalizer System for the OFDM System

OFDM system을 위한 Pre-Equalizer 시스템의 성능 분석

  • Cho, Kyung-Chul (Dept. of Broadcasting & Communication, ICT Polytech Institute of Korea)
  • Received : 2014.11.10
  • Accepted : 2014.12.01
  • Published : 2014.12.31
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Abstract

In this paper, we propose an OFDM system with a pre-equalizer which pre-distorting a transmission signal to compensate for the degradation of the system by the intersymbol interference and multi-path fading at the high-speed multimedia communications. We model an OFDM system by using C language, a simulation was performed. As a result, there was a performance of BER is about 7dB at $10^{-3}$, improved to $10^{-4}$ on the MMSE property also $10^{-3}$.

본 논문에서는 초고속 멀티미디어 통신에서 고속전송으로 인한 다중경로 페이딩과 인접 심볼간의 간섭현상으로 인한 시스템의 성능 저하를 보상하기 위하여 송신신호를 미리 왜곡시키는 사전등화기를 사용한 OFDM 시스템을 제안하고, C언어를 이용하여 OFDM 시스템을 모델링하였고, 시뮬레이션을 진행하였다. 그 결과 BER이 $10^{-3}$에서 약 7dB의 성능향상이 있었고, MMSE 특성 또한 $10^{-3}$에서 $10^{-4}$으로 향상되었다.

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References

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