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UBC Theses and Dissertations
Adaptive clock recovery and jitter control in ATM networks Muhiyaddin, Ammar
Abstract
Transporting continuous bit rate (CBR) or real-time periodic traffic is one of the major services that ATM-based B-ISDN technology is promising to provide. This service requires the receiver to preserve the original inter-cell spacing. However, statistical multiplexing and buffering in the ATM transport networks can introduce significant jitter in the inter-arrival period of the cell stream, thus degrading the quality, of the cell play-back at the receiver. An additional complication in plesiochronous networks is the absence of the transmitter clock frequency at the receiver. Therefore, the receiver must be capable of extracting the frequency of the transmitter clock and removing the jitter from the arriving cell stream. This thesis provides a thorough treatment of the clock recovery and jitter removal problems for CBR traffic in ATM networks, and proposes a new practical design of a receiver unit for handling multirate CBR traffic. The design proposed complies with the ATM standards. Our design employs a number of control parameters that can be varied to optimize the operation of the receiver and to provide high adaptability to rapidly changing input cell traffic. The proposed scheme is based on monitoring the fluctuation in the receiver buffer occupancy to derive a jitter free receiver clock. The hardware design has been specified and simulated extensively using VHDL (a hardware description language), and the simulation results show that our design is robust and very effective in removing cell delay jitter and restoring the original CBR stream.
Item Metadata
Title |
Adaptive clock recovery and jitter control in ATM networks
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1996
|
Description |
Transporting continuous bit rate (CBR) or real-time periodic traffic is one of the major
services that ATM-based B-ISDN technology is promising to provide. This service requires
the receiver to preserve the original inter-cell spacing. However, statistical multiplexing and
buffering in the ATM transport networks can introduce significant jitter in the inter-arrival
period of the cell stream, thus degrading the quality, of the cell play-back at the receiver. An
additional complication in plesiochronous networks is the absence of the transmitter clock
frequency at the receiver. Therefore, the receiver must be capable of extracting the frequency
of the transmitter clock and removing the jitter from the arriving cell stream. This thesis
provides a thorough treatment of the clock recovery and jitter removal problems for CBR
traffic in ATM networks, and proposes a new practical design of a receiver unit for handling
multirate CBR traffic. The design proposed complies with the ATM standards. Our design
employs a number of control parameters that can be varied to optimize the operation of the
receiver and to provide high adaptability to rapidly changing input cell traffic. The proposed
scheme is based on monitoring the fluctuation in the receiver buffer occupancy to derive a
jitter free receiver clock. The hardware design has been specified and simulated extensively
using VHDL (a hardware description language), and the simulation results show that our
design is robust and very effective in removing cell delay jitter and restoring the original
CBR stream.
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Extent |
3842973 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-02-03
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0064873
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1996-05
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.