Proceedings of the Korea Electromagnetic Engineering Society Conference (한국전자파학회:학술대회논문집)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Performance Analysis of Clock Recovery for OFDM/QPSK-DMR System Using Band Limited-Pulse Shaping Filter

대역 제한 필터를 적용하는 OFDM/QPSK-DMR 시스템에 대한 Clock Recovery의 성능 분석

  • Ahn, Jun-Bae (R&D Team. SOLiD Technologies, Inc.) ;
  • Yang, Hee-Jin (Dept. of Inform. & Telecomm. Eng., Graduate School of Hankuk Aviation Univ.) ;
  • Oh, Chang-Heon (School of Inform. Tech., Korea Univ. of Tech. and Edu.) ;
  • Cho, Sung-Joon (School of Electronics, Telecomm. and Computer Eng. of Hankuk Aviation Univ.)
  • 안준배 ((주)쏠리테크 R&D팀) ;
  • 양희진 (한국항공대학교 대학원 정보통신공학과) ;
  • 오창헌 (한국기술교육대학교 정보기술공학부) ;
  • 조성준 (한국항공대학교 전자.정보통신.컴퓨터공학부)
  • Published : 2003.11.15
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Abstract

In this paper, we have proposed a clock recovery algorithm of OFDM/QPSK-DMR(Orthogonal Frequency Division Multiplexing/Quadrature Phase Shift Keying Modulation-Digital Microwave Radio)system using BL-PSF(Band Limited-Pulse Shaping Filter) and have analyzed the clock phase error variance performance of OFDM/QPSK and single carrier DMR systems. The existing OFDM/QPSK-DMR system using the windowing requires training sequence or CP(Cyclic Prefix) to synchronize a receiver clock frequency Because there is no training sequence or CP(Cyclic prefix) in our proposed DMR system, the proposed clock recovery algorithm is useful to the OFDM/QPSK-DMR system using BL-PSF, The simulation results confirm that the proposed clock recovery algorithm has the same clock phase error variance performance in a single carrier DMR system under AWGN(Additive White Gaussian Noise) environment.

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