Journal article 381 views
Asynchronous Source Clock Frequency Recovery through Aperiodic Packet Streams
IEEE Communications Letters, Volume: 17, Issue: 7, Pages: 1455 - 1458
Swansea University Author: Joseph Kim
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DOI (Published version): 10.1109/LCOMM.2013.052413.130827
Abstract
In this work, we consider the most general case of source clock frequency recovery (SCFR) in packet networks, i.e., asynchronous SCFR through aperiodic packet streams, where there is neither a common reference clock nor any relation between packet generation intervals and a source clock frequency. W...
| Published in: | IEEE Communications Letters |
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| Published: |
2013
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa17104 |
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| Abstract: |
In this work, we consider the most general case of source clock frequency recovery (SCFR) in packet networks, i.e., asynchronous SCFR through aperiodic packet streams, where there is neither a common reference clock nor any relation between packet generation intervals and a source clock frequency. We formulate the problem of asynchronous SCFR with timestamps as a linear case of regression through the origin (RTO) and propose two schemes, one based on recursive least squares (RLS) method and the other based on simple heuristics of cumulative ratio of interarrival and interdeparture times, which provide better estimates of the source clock frequency with faster convergence than conventional phase-locked loop (PLL)-based schemes. |
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| Keywords: |
Source clock frequency recovery, linear regression, least squares, cumulative ratio, packet jitter. |
| College: |
Faculty of Science and Engineering |
| Issue: |
7 |
| Start Page: |
1455 |
| End Page: |
1458 |