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Design of a IEEE 1588 Based Clock Synchronization System for Femtocell Frequency Signal Generation

펨토셀 주파수 신호 생성을 위한 IEEE 1588 기반 클록 동기화 시스템의 설계

  • Received : 2015.01.20
  • Accepted : 2015.07.16
  • Published : 2015.07.31

Abstract

This article presents a circuit and a system for IEEE 1588 based clock synchronization to generate a very accurate frequency signal required in femtocell devices. A prototype board and the experimental environment to verify the functions and to evaluate the performance are explained to verify the feasibility of the proposed synchronization system. To make low-cost femtocells without constraints on the place of installation, it is very important to study on the practical implementation of synchronization system based on IEEE 1588. The experimental result shows that the synchronization errors between -16 ns and 9 ns are guaranteed over the network of femtocell devices with the proposed synchronization circuits, thus the synchronization criteria of the 3GPP HNB are met.

Keywords

Clock synchronization;Femtocell;IEEE 1588;PTP

References

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