Adaptive Clock Recovery Method Utilizing Proportional-Integral-Derivative (PID) Control for Circuit Emulation

Youichi FUKADA  Takeshi YASUDA  Shuji KOMATSU  Koichi SAITO  Yoichi MAEDA  Yasuyuki OKUMURA  

IEICE TRANSACTIONS on Communications   Vol.E89-B   No.3   pp.690-695
Publication Date: 2006/03/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.3.690
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on the Next Generation Ethernet Technologies)
adaptive clock method,  proportional-integral-derivative (PID) control,  circuit emulation,  packet network,  

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This paper describes a novel adaptive clock recovery method that uses proportional-integral-derivative (PID) control. The adaptive clock method is a clock recovery technique that synchronizes connected terminals via packet networks, and will be indispensable for circuit emulation services in the next generation Ethernet. Our adaptive clock method simultaneously achieves a short starting-time, accuracy, stable recovery clock frequency, and few buffer delays using the PID control technique. We explain the numerical simulations, experimental results, and circuit designs.