標題: | QoS-Driven Optimization for Video Streaming Using Layer-Aligned Multipriority Rateless Codes |
作者: | Hung, Lien-En Hsiao, Hsu-Feng 資訊工程學系 Department of Computer Science |
關鍵字: | Channel coding;rateless codes;unequal error protection;QoS-driven optimization |
公開日期: | 2015 |
摘要: | Forward error correction techniques are commonly used for delay-sensitive video streaming applications. Streaming of compressed videos can usually withstand a certain level of packet loss, depending on the compression methods and error concealment techniques. In this paper, a QoS-driven optimization algorithm is proposed for the streaming of scalable videos using layer-aligned multipriority rateless codes over wideband wireless channels. Layer-aligned multipriority rateless codes provide controllable protection strengths for different layers of a scalable video. The coding is based on the N-cycle layer-aligned overlapping structure where each layer of scalable videos is protected by N windows. The objective of the proposed method in this paper is to decide a coding strategy by minimizing the total data rate for scalable video streaming, while fulfilling user\'s expectation of desired recovery rates of different video layers. The developed QoS-driven optimization algorithm is based on the prediction model of layer-aligned multipriority rateless codes. Its better performance is verified with simulations and real-world experiments over 4G wireless networks. |
URI: | http://hdl.handle.net/11536/134746 |
ISBN: | 978-1-4799-8391-9 |
ISSN: | 0271-4302 |
期刊: | 2015 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS) |
起始頁: | 1666 |
結束頁: | 1669 |
顯示於類別: | 會議論文 |