상세정보
학술지
A New Network Synchronizer Using Phase Adjustment and Feedforward Filtering Based on Low-Cost Crystal Oscillators
- 저자
- 성창경, 이승우, 최우영
- 발행일
- 201007
- 출처
- IEEE Transactions on Instrumentation and Measurement, v.59 no.7, pp.1764-1774
- ISSN
- 0018-9456
- 출판사
- IEEE
- 협약과제
- 08MR2400, 멀티미디어 컨버전스 네트워크 온칩 기술 개발, 이범철
- 초록
- A new network synchronizer using a two-way message exchange is proposed and implemented in a field-programmable gate array (FPGA). This synchronizer aligns its clock signal and time of day to that of the master node. For high-precision frequency control, a new phase adjustment method is employed, which efficiently provides high-frequency resolution and deterministic frequency control gain. In addition, a feedforward filter is used to reduce dithering of the time offset due to quantization errors in time-stamping. Even with a low-cost crystal oscillator, successful synchronization with root-mean-square (RMS) jitters of 0.1856 unit interval is achieved. © 2006 IEEE.
- KSP 제안 키워드
- Adjustment method, Control gain, Crystal Oscillator, Field Programmable Gate Arrays(FPGA), Frequency Resolution, Frequency control, High Frequency(HF), Low-cost, Master Node, Message exchange, Quantization error