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

  • 제22권11호
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  • Pages.2401-2408
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  • 1997
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  • 1226-4717(pISSN)
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  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

DTTL 비트동기장치의 평균시간지연 편차 성능에 관한 연구

Mean time delay variation performane of DTTL bit synchronizer

  • 발행 : 1997.11.01
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초록

The measured pulse shapes provided in the given data package demonstrated pulse distortions due to laser speckle. the distorted pulse shapes were carefully analyzed, modeled, and then applied to the DTTL(Digital-data Transition Tracking Loop)[1] bit synchronizer simulator to measure the mean time delay and its delay variation performance. The result showed that the maximum mean time delay variation with the modeled data was 12.5% when window size equals 1. All the data given were located within this modeled boundary and the maximum eman time delay variation was 7% in this case. The mean time delay variation was known to be smaller by reducing the window size [2][5][6]. The mitigated delay variation was 2.5% in the modeled case and 1.4% in the data set given when the windown size equals 0.1. With the digital DTTL insteal of analog DTTL, similar results was obtained.

키워드

참고문헌

  1. Space Program Summary 37-50 v.3 Digital Data Transition Tracking Loops Lindsey, W. C.;Tausworthe, R. C.
  2. An Analysis of the Steady State Phase Noise Performance of a Digital Data Transition Tracking Loop Simon, M. K.
  3. TR-1083-8302 Analysis and Specification of Signal Distortion in a Range and Synchronization System-Final Report Lin, L. S.;Lindsey, W. C.;Tsang, C. S.
  4. Simulation Modeling and Analysis Law, A. M.;Kelton, W. D.
  5. Lincom Report Speckle Measurement Analysis and Simulation Results of Mean Time Delay Variations Tsang, C. S.;Kim, K.
  6. LinCom Report Analysis and Simulation Results of Mean Time Delay Variations due to Laser Speckle Tsang, C. S.;Kim, K.
  7. IEEE International Conference on Communications Design and Performance of High Rate Digital Bit Synchronizers Chie, C. M.;Lindsey, W. C.;Tsang, C. S.
  8. PhD Dissertation, University of Southern California The DTTL Bit Synchronizer System Performance Evaluation Under Channel Disturbances and Waveform Distortion Lin, L. S.
  9. Term Paper at University of Southern California Comparison of Mean Time Delay Variations between Analog DTTL and Digital DTTL Lindsey, W. C.;Kim, K.
  10. Telecommunication Systems Engineering Lindsey, W. C.;Simon, M. K.