The Implementation of E1 Clock Recovery
Clock transform and recovery is of significant importance in microwave TDM service, and it is always extracted from the E1 line data stream in most cases. However, intrinsically uncertain delay and jitter caused by packet transmission of E1 data information, may lead to the indexes of the data recov...
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2016-01-01
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Online Access: | http://dx.doi.org/10.1051/matecconf/20164007009 |
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doaj-92de6e5fcd40428283caad7da77840562021-02-02T04:23:47ZengEDP SciencesMATEC Web of Conferences2261-236X2016-01-01400700910.1051/matecconf/20164007009matecconf_icmes2016_07009The Implementation of E1 Clock RecoveryWang Ziyu0Zhao Yanan1Zhao Weidong2Xia Feng3Shaanxi Monitoring Station, State Radio Monitoring Centre in Xi’anShaanxi Monitoring Station, State Radio Monitoring Centre in Xi’anShaanxi Monitoring Station, State Radio Monitoring Centre in Xi’anShaanxi Monitoring Station, State Radio Monitoring Centre in Xi’anClock transform and recovery is of significant importance in microwave TDM service, and it is always extracted from the E1 line data stream in most cases. However, intrinsically uncertain delay and jitter caused by packet transmission of E1 data information, may lead to the indexes of the data recovery clock exceed the clock performance template. Through analysis of the E1 clock indexes and measuring methods, this paper proposes a new clock recovery method. The method employs two buffers, the first RAM is used as a buffer to deduct excess information, and the second FIFO is used as a buffer to recovery the clock and data. The first buffer has a feedback from the second one, and is able to actively respond to changes in the data link and requests from the second one. The test results validate the effectiveness of the method, and the corresponding scheme is also valuable for the other communication systems.http://dx.doi.org/10.1051/matecconf/20164007009 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Wang Ziyu Zhao Yanan Zhao Weidong Xia Feng |
spellingShingle |
Wang Ziyu Zhao Yanan Zhao Weidong Xia Feng The Implementation of E1 Clock Recovery MATEC Web of Conferences |
author_facet |
Wang Ziyu Zhao Yanan Zhao Weidong Xia Feng |
author_sort |
Wang Ziyu |
title |
The Implementation of E1 Clock Recovery |
title_short |
The Implementation of E1 Clock Recovery |
title_full |
The Implementation of E1 Clock Recovery |
title_fullStr |
The Implementation of E1 Clock Recovery |
title_full_unstemmed |
The Implementation of E1 Clock Recovery |
title_sort |
implementation of e1 clock recovery |
publisher |
EDP Sciences |
series |
MATEC Web of Conferences |
issn |
2261-236X |
publishDate |
2016-01-01 |
description |
Clock transform and recovery is of significant importance in microwave TDM service, and it is always extracted from the E1 line data stream in most cases. However, intrinsically uncertain delay and jitter caused by packet transmission of E1 data information, may lead to the indexes of the data recovery clock exceed the clock performance template. Through analysis of the E1 clock indexes and measuring methods, this paper proposes a new clock recovery method. The method employs two buffers, the first RAM is used as a buffer to deduct excess information, and the second FIFO is used as a buffer to recovery the clock and data. The first buffer has a feedback from the second one, and is able to actively respond to changes in the data link and requests from the second one. The test results validate the effectiveness of the method, and the corresponding scheme is also valuable for the other communication systems. |
url |
http://dx.doi.org/10.1051/matecconf/20164007009 |
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