An Efficient NVoD Scheme Using Implicit Error Correction and Subchannels for Wireless Networks
StatisticsView Usage Statistics
MetadataShow full item record
Knowledge AreaIngeniería Telemática
SponsorsThis work was supported by the AEI/FEDER, UE Project AIM under Grant TEC2016-76465-C2-1-R.
Realizado en/conUniversidad Politécnica de Cartagena
Bibliographic CitationR. Asorey-Cacheda, A. -J. Garcia-Sanchez and J. Garcia-Haro, "An Efficient NVoD Scheme Using Implicit Error Correction and Subchannels for Wireless Networks," in IEEE Transactions on Multimedia, vol. 22, no. 9, pp. 2396-2408, Sept. 2020, doi: 10.1109/TMM.2019.2953812.
Implicit Error Correction (IEC) is a near Video-on-Demand (nVoD) scheme that trades bandwidth utilization for initial playback delay to potentially support an infinite number of users. Additionally, it provides error protection without any further bandwidth increase by exploiting the implicit redundancy of nVoD protocols, using linear combinations of the segments transmitted in a given time slot. However, IEC packet loss protection is weaker at the beginning of the playback due to the lack of implicit redundancy and lower decoding efficiency, resulting in worse subjective playback quality. In tackling this issue, this paper contributes with an extension of the original nVoD architecture, enhancing its performance by adding a new element namely, subchannels. These subdivisions of the original channels do not provide further packet loss protection but significantly improve the decoding efficiency, which in turn increases playback quality, especially at the beginning. Even for very high ...
- Artículos