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 Carrier Recovery for OFDM/QPSK-DMR System Using Band Limited-Pulse Shaping Filter

대역 제한 필터를 적용하는 OFDM/QPSK-DMR 시스템에 대한 Carrier 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 carrier 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 carrier phase MSE(Mean Square Error) performance of OFDM/QPSK and single carrier DMR systems. The existing OFDM/QPSK-DMR system using windowing requires training sequence or CP(Cyclic prefix) to synchronize a receive. carrier frequency. Because in the OFDM/QPSK-DMR system using BL-PSF there is no training sequence or CP(Cyclic Prefix), we also propose a carrier recovery useful to the system. The simulation results confirm that the proposed carrier recovery algorithm has the same carrier phase MSE(Mean Square Error) performance for the single carrier DMR system under AWGN(Additive White Gaussian Noise) environment.

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