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학술지 Jitter and Clock Recovery for Periodic Traffic in Broadband Packet Networks
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저자
R.P. Singh, 이상훈, 김종권
발행일
199405
출처
IEEE Transactions on Communications, v.42 no.5, pp.2189-2196
ISSN
0090-6778
출판사
IEEE
DOI
https://dx.doi.org/10.1109/26.285155
초록
The transparent transport of real-time periodic traffic through a broadband packet network requires the recovery of source clock frequency at the destination. The arriving packet stream at the destination buffer contains the source clock frequency information, which can be recovered by monitoring the buffer level, and using it to adjust the destination clock frequency without buffer under- or overflow. However, the inherently stochastic nature of packet transport in a broadband packet network makes the recovery difficult. We illustrate the packet jitter phenomenon, and develop algorithms to construct the destination clock frequency such that it asymptotically follows the source clock frequency with minimal variation. We provide a systematic design procedure for the implementation of these algorithms, and apply them to a computer model of a single stage FCFS multiplexer to demonstrate their effectiveness and different design trade-offs. We also discuss the application of the algorithms to the audio and video services. © 1994 IEEE
KSP 제안 키워드
Audio and video, Clock frequency, Clock recovery(CR), Design procedure, Design trade-offs, Frequency information, Packet networks, Packet transport, Real-Time, Systematic design, computer model