Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Adaptive FEC-Encoding for VideoStreaming over WiFiANDERS BRANDERUDMaster of
KTH, School of Information and Communication Technology (ICT).
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In video streaming it is important that the video stream reaches the users in time, and without errors. To retransmit lost packets in a large scale multimedia video transmission is often unfeasible because of the retransmission delay. Because of that errors require either costly retransmissions or causes a downgrade of performance for the receiving user, an important goal is to minimize the number of errors that occurs when transmitting data during video streaming through a wireless channel. In this paper an adaptation-algorithm is proposed, which adapts itself in such away that the receivers of e.g. the broadcast will receive enough packets in order to be able to FEC-decode the received data in low- as well as high loss-scenarios. The algorithm adapts itself by changing the rate of FEC-encoded redundant packets based on the current packet-loss-rate of the channel, with the aim of optimizing the bandwidth-usage and providing the receiver with playable data meeting deadlines. It adds an additional self-adaptive amount of FEC-encoded redundant packets for each FEC-encoded-session in order to guarantee the ability of the receiver to FEC-decode the data and play the media, even under the conditions in which the inteference-level of the channel increases during the transmission of each such session. Simulations demonstrate that in a wireless channel with a packet loss rate of 10%, using 1000 source packets per FEC-encoded unit, 12.6% redundant packets are required in order to ensure a FEC-decoding-failure probability< 11000 .

Place, publisher, year, edition, pages
2013. , 33 p.
Series
TRITA-ICT-EX, 2013:219
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:kth:diva-143032OAI: oai:DiVA.org:kth-143032DiVA: diva2:705156
Subject / course
Communications Systems
Educational program
Master of Science in Engineering - Information and Communication Technology
Examiners
Available from: 2014-03-14 Created: 2014-03-14 Last updated: 2014-03-14Bibliographically approved

Open Access in DiVA

fulltext(1350 kB)1338 downloads
File information
File name FULLTEXT01.pdfFile size 1350 kBChecksum SHA-512
e593f171cb12811d2594bf325f9b85546e912f8c6ebb038121a21f0ff264bd0cb4982b858201eb7f4541c460a891b7b805466fc8db709d9ff49978f8a3a291db
Type fulltextMimetype application/pdf

By organisation
School of Information and Communication Technology (ICT)
Computer and Information Science

Search outside of DiVA

GoogleGoogle Scholar
Total: 1338 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 128 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf