Dynamic adjustment of weighting and safety factors in playout buffers for enhancing VoIP quality

4.00
Hdl Handle:
http://hdl.handle.net/10547/336094
Title:
Dynamic adjustment of weighting and safety factors in playout buffers for enhancing VoIP quality
Authors:
Syed, Tazeen S.; Epiphaniou, Gregory; Safdar, Ghazanfar Ali ( 0000-0001-8969-1044 )
Abstract:
The quality of Voice over Internet Protocol (VoIP) calls is highly influenced by transmission impairments such as delay, packet loss and jitter, with jitter being manifested as one of the deleterious effects affecting its quality. A jitter buffer is usually employed at the receiver side to mitigate its effects by adapting its parameters in a trade-off between delay and packet loss. This paper proposes a novel de-jitter algorithm that adaptively changes the size of the playout buffer depending on the network states, in order to effectively handle the packet loss and delay, whereas E-model is used to quantify speech quality. Based on the statistics of the received packets, the adaptive playout buffer algorithm dynamically adjusts the weighting factor (α) and the safety factor (β) for regulating the delay and trade-off loss, thus maximizing the quality for VoIP.
Affiliation:
University of Bedfordshire
Citation:
Syed, T.S., Epiphaniou, G., Safdar, G.A. (2014) 'Dynamic adjustment of weighting and safety factors in playout buffers for enhancing VoIP quality', Science and Information Conference (SAI), 7-9 Oct. 2013, pp.810-815
Publisher:
IEEE
Issue Date:
Oct-2014
URI:
http://hdl.handle.net/10547/336094
Additional Links:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6661834&queryText%3DDynamic+adjustment+of+weighting+and+safety+factors+in+playout+buffers+for+enhancing+VoIP+quality
Type:
Conference papers, meetings and proceedings
Language:
en
Appears in Collections:
Centre for Wireless Research (CWR)

Full metadata record

DC FieldValue Language
dc.contributor.authorSyed, Tazeen S.en
dc.contributor.authorEpiphaniou, Gregoryen
dc.contributor.authorSafdar, Ghazanfar Alien
dc.date.accessioned2014-11-25T13:46:47Z-
dc.date.available2014-11-25T13:46:47Z-
dc.date.issued2014-10-
dc.identifier.citationSyed, T.S., Epiphaniou, G., Safdar, G.A. (2014) 'Dynamic adjustment of weighting and safety factors in playout buffers for enhancing VoIP quality', Science and Information Conference (SAI), 7-9 Oct. 2013, pp.810-815en
dc.identifier.otherINSPEC 13899497-
dc.identifier.urihttp://hdl.handle.net/10547/336094-
dc.description.abstractThe quality of Voice over Internet Protocol (VoIP) calls is highly influenced by transmission impairments such as delay, packet loss and jitter, with jitter being manifested as one of the deleterious effects affecting its quality. A jitter buffer is usually employed at the receiver side to mitigate its effects by adapting its parameters in a trade-off between delay and packet loss. This paper proposes a novel de-jitter algorithm that adaptively changes the size of the playout buffer depending on the network states, in order to effectively handle the packet loss and delay, whereas E-model is used to quantify speech quality. Based on the statistics of the received packets, the adaptive playout buffer algorithm dynamically adjusts the weighting factor (α) and the safety factor (β) for regulating the delay and trade-off loss, thus maximizing the quality for VoIP.en
dc.language.isoenen
dc.publisherIEEEen
dc.relation.urlhttp://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6661834&queryText%3DDynamic+adjustment+of+weighting+and+safety+factors+in+playout+buffers+for+enhancing+VoIP+qualityen
dc.subjectE-Modelen
dc.subjectplayout bufferen
dc.subjectsafetyen
dc.subjectVoIPen
dc.titleDynamic adjustment of weighting and safety factors in playout buffers for enhancing VoIP qualityen
dc.typeConference papers, meetings and proceedingsen
dc.contributor.departmentUniversity of Bedfordshireen
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