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Enhancement of Adaptive Forward Error Correction Mechanism for Video Transmission Over Wireless Local Area Network

Video transmission over the wireless network faces many challenges. The most critical challenge is related to packet loss. To overcome the problem of packet loss, Forward Error Correction is used by adding extra packets known as redundant packet or parity packet. Currently, FEC mechanisms have been...

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Main Author: Nur Ziadah, Harun
Format: Thesis
Language:English
English
Published: 2012
Subjects:
TK5101-6720 Telecommunication
Online Access:http://etd.uum.edu.my/2958/1/Nur_Ziadah_Harun.pdf
http://etd.uum.edu.my/2958/3/Nur_Ziadah_Harun.pdf
http://etd.uum.edu.my/2958/
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spelling my.uum.etd.29582016-04-27T06:57:50Z http://etd.uum.edu.my/2958/ Enhancement of Adaptive Forward Error Correction Mechanism for Video Transmission Over Wireless Local Area Network Nur Ziadah, Harun TK5101-6720 Telecommunication Video transmission over the wireless network faces many challenges. The most critical challenge is related to packet loss. To overcome the problem of packet loss, Forward Error Correction is used by adding extra packets known as redundant packet or parity packet. Currently, FEC mechanisms have been adopted together with Automatic Repeat reQuest (ARQ) mechanism to overcome packet losses and avoid network congestion in various wireless network conditions. The number of FEC packets need to be generated effectively because wireless network usually has varying network conditions. In the current Adaptive FEC mechanism, the FEC packets are decided by the average queue length and average packet retransmission times. The Adaptive FEC mechanisms have been proposed to suit the network condition by generating FEC packets adaptively in the wireless network. However, the current Adaptive FEC mechanism has some major drawbacks such as the reduction of recovery performance which injects too many excessive FEC packets into the network. This is not flexible enough to adapt with varying wireless network condition. Therefore, the enhancement of Adaptive FEC mechanism (AFEC) known as Enhanced Adaptive FEC (EnAFEC) has been proposed. The aim is to improve recovery performance on the current Adaptive FEC mechanism by injecting FEC packets dynamically based on varying wireless network conditions. The EnAFEC mechanism is implemented in the simulation environment using Network Simulator 2 (NS-2). Performance evaluations are also carried out. The EnAFEC was tested with the random uniform error model. The results from experiments and performance analyses showed that EnAFEC mechanism outperformed the other Adaptive FEC mechanism in terms of recovery efficiency. Based on the findings, the optimal amount of FEC generated by EnAFEC mechanism can recover high packet loss and produce good video quality. 2012 Thesis NonPeerReviewed text en http://etd.uum.edu.my/2958/1/Nur_Ziadah_Harun.pdf text en http://etd.uum.edu.my/2958/3/Nur_Ziadah_Harun.pdf Nur Ziadah, Harun (2012) Enhancement of Adaptive Forward Error Correction Mechanism for Video Transmission Over Wireless Local Area Network. Masters thesis, Universiti Utara Malaysia.
institution Universiti Utara Malaysia
building UUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Utara Malaysia
content_source UUM Electronic Theses
url_provider http://etd.uum.edu.my/
language English
English
topic TK5101-6720 Telecommunication
spellingShingle TK5101-6720 Telecommunication
Nur Ziadah, Harun
Enhancement of Adaptive Forward Error Correction Mechanism for Video Transmission Over Wireless Local Area Network
description Video transmission over the wireless network faces many challenges. The most critical challenge is related to packet loss. To overcome the problem of packet loss, Forward Error Correction is used by adding extra packets known as redundant packet or parity packet. Currently, FEC mechanisms have been adopted together with Automatic Repeat reQuest (ARQ) mechanism to overcome packet losses and avoid network congestion in various wireless network conditions. The number of FEC packets need to be generated effectively because wireless network usually has varying network conditions. In the current Adaptive FEC mechanism, the FEC packets are decided by the average queue length and average packet retransmission times. The Adaptive FEC mechanisms have been proposed to suit the network condition by generating FEC packets adaptively in the wireless network. However, the current Adaptive FEC mechanism has some major drawbacks such as the reduction of recovery performance which injects too many excessive FEC packets into the network. This is not flexible enough to adapt with varying wireless network condition. Therefore, the enhancement of Adaptive FEC mechanism (AFEC) known as Enhanced Adaptive FEC (EnAFEC) has been proposed. The aim is to improve recovery performance on the current Adaptive FEC mechanism by injecting FEC packets dynamically based on varying wireless network conditions. The EnAFEC mechanism is implemented in the simulation environment using Network Simulator 2 (NS-2). Performance evaluations are also carried out. The EnAFEC was tested with the random uniform error model. The results from experiments and performance analyses showed that EnAFEC mechanism outperformed the other Adaptive FEC mechanism in terms of recovery efficiency. Based on the findings, the optimal amount of FEC generated by EnAFEC mechanism can recover high packet loss and produce good video quality.
format Thesis
author Nur Ziadah, Harun
author_facet Nur Ziadah, Harun
author_sort Nur Ziadah, Harun
title Enhancement of Adaptive Forward Error Correction Mechanism for Video Transmission Over Wireless Local Area Network
title_short Enhancement of Adaptive Forward Error Correction Mechanism for Video Transmission Over Wireless Local Area Network
title_full Enhancement of Adaptive Forward Error Correction Mechanism for Video Transmission Over Wireless Local Area Network
title_fullStr Enhancement of Adaptive Forward Error Correction Mechanism for Video Transmission Over Wireless Local Area Network
title_full_unstemmed Enhancement of Adaptive Forward Error Correction Mechanism for Video Transmission Over Wireless Local Area Network
title_sort enhancement of adaptive forward error correction mechanism for video transmission over wireless local area network
publishDate 2012
url http://etd.uum.edu.my/2958/1/Nur_Ziadah_Harun.pdf
http://etd.uum.edu.my/2958/3/Nur_Ziadah_Harun.pdf
http://etd.uum.edu.my/2958/
_version_ 1644276842472931328
score 13.211869

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