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Long-Term Performance Evaluation of Scheduling Disciplines in OFDMA Multi-Rate Video Multicast Transmission
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  • Journal title : Journal of KIISE
  • Volume 43, Issue 2,  2016, pp.246-255
  • Publisher : Korean Institute of Information Scientists and Engineers
  • DOI : 10.5626/JOK.2016.43.2.246
 Title & Authors
Long-Term Performance Evaluation of Scheduling Disciplines in OFDMA Multi-Rate Video Multicast Transmission
Hong, Jin Pyo; Han, Minkyu;
The orthogonal frequency-division multiple access (OFDMA) systems are well suited to multi-rate multicast transmission, as they allow flexible resource allocation across both frequency and time, and provide adaptive modulation and coding schemes. Unlike layered video coding, the multiple description coding (MDC) enables flexible decomposition of the raw video stream into two or more substreams. The quality of the video stream is expected to be roughly proportional to data rate sustained by the receiver. This paper describes a mathematical model of resource allocation and throughput in the multi-rate video multicast for the OFDMA wireless and mobile networks. The impact on mean opinion score (MOS), as a measurement of user-perceived quality (by employing a variety of scheduling disciplines) is discussed in terms of utility maximization and proportional fairness. We propose a pruning algorithm to ensure a minimum video quality even for a subset of users at the resource limitation, and show the optimal number of substreams and their rates can sustain.
video multicast;OFDMA scheduling;multi-rate multicast;multiple description coding (MDC);mean opinion score (MOS);
 Cited by
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