User Perceived Codec and Duplex Aware Playout Algorithms and LMOS-DMOS Measurement for Real Time Streams

Kuo Kun Tseng*, Ying-Dar Lin

*此作品的通信作者

研究成果: Paper同行評審

摘要

In the network devices for real time streaming, e.g. VoIP phone, video phone and online game, the playout algorithm controls the playout delay to eliminate the jitter and to minimize the overflow packet loss. Conventional algorithms did this based on network delay only; they did not consider the user perceived quality, and aware the codec and communication duplex mode. Therefore, we present two novel approaches: codec aware adaptive playout (CAAP) and duplex aware adaptive playout (DAAP), they intent to optimize the user perceived quality based on codec and communication duplex mode respectively. Because of their different characteristics, CAAP and DAAP can work either alone or together; and their improvements are accumulative. The out-performance of CAAP and DAAP are superior the prior algorithms in our substantial but conservative evaluation. Since no objective mechanisms for measuring the speech quality of two-way communication exist; a new LMOS-DMOS measurement mechanism is also proposed. Although VoIP is an exemplary embodiment in this paper, we formally model our algorithms into a generalized user perceived QoS control as well.

原文English
頁面1666-1669
頁數4
DOIs
出版狀態Published - 4月 2003
事件2003 International Conference on Communication Technology, ICCT 2003 - Beijing, China
持續時間: 9 4月 200311 4月 2003

Conference

Conference2003 International Conference on Communication Technology, ICCT 2003
國家/地區China
城市Beijing
期間9/04/0311/04/03

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