Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Timing Synchronization of Wireless OFDM LAN Systems

무선 OFDMLAN 시스템의 시간 동기

  • 최승국 (인천대학교 정보통신공학과)
  • Published : 2009.05.30
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Abstract

A timing synchronization method is presented for IEEE 802.11a wireless OFDM system. First the signal detection is achieved by measuring the moving energy of the received OFDM signal in two consecutive windows. By measuring the correlation between the short training signal and received envelope signal, fine OFDM symbol synchronization can be acquired. The variance and average value of the correlation value is acquired. And the theoretical values are compared with computer simulation results.

IEEE 802.11a 무선 LAN OFDM 시스템을 위한 시간 동기 처리 방법을 연구한다. 먼저 연속되는 두 개의 윈도우 내에 존재하는 OFDM 수신 신호의 에너지를 계속 측정하여 비교함으로서 신호의 시작 시간을 검출한다. 이어서 짧은 훈련 신호와 수신된 신호간의 상관성을 측정하는 방법으로 정확한 OFDM 심볼 동기가 수행된다. 훈련 신호와 수신 신호 간의 상관값에 대한 분산과 평균값을 구하고, 컴퓨터 시뮬레이션에 의한 결과 값과 비교한다.

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References

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