Yang Min Lee , Jae Kee Lee

The KIPS Transactions:PartC, Vol. 11, No. 6, pp. 773-780, Dec. 2004
10.3745/KIPSTC.2004.11.6.773,   PDF Download:

Abstract

In this paper, we measured the transmission characteristics of a MPEG2 and a DV that are typical stream-type traffics on the very high speed network and carried out the subjective evaluation of end users for these stream-types. In the subjective evaluation of these stream-type data, video quality evaluation is based on ITU-R BT.500-1 and audio quality evaluation is based on ITU-R BS.1116-1. Also experiment method to acquire the subjective evaluation of end users is selected the 5 grades method of DSCQS. Under the same condition, in case of MPEG2, the evaluation grade of the video and the audio quality becomes deteriorated at the load rate of 54% that network traffic increases rapidly. In case of DV, the evaluation grade of video quality began decrease, but the degree of the change was slower than MPEG2 at tje same load rate. Moreover the subjective evaluation grade of end users was superior to load rate 70% in case of DV audio quality, traffic and QoS control that consider the subjective evaluation of end user is required. Conclusively, in case of MPEG2, we can perform traffic control that only use the actual measurement values on the network. However in case of DV, we can perform traffic control that the actual measurement values on the network and the subjective evaluation of end users are considered at the same time.

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