상세정보
학술대회
Evaluation of the Interleaved Source Coding (ISC) Under Packet Correlation
- 발행일
- 200507
- 출처
- International Conference on Multimedia and Expo (ICME) 2005, pp.1-4
- 협약과제
- 05MT2200, 통합미디어 전달망 기술 개발, 주성순
- 초록
- Network impairments such as delay and packet losses have severe impact on the presentation quality of many predictive video sources. Prior researches (e.g., [1]-[3][5]-[9][11]-[13]) have shown efforts to develop packet loss resilient coding methods to overcome such impairments for realtime streaming applications. Interleaved Source Coding (ISC) is one of the error resilient coding methods, which is based on an optimum interleaving of predictive video coded frames transmitted over a single erasure channel. ISC employs a Markov Decision Process (MDP) and a corresponding dynamic programming algorithm to identify the optimal interleaving pattern for a given channel model and a transmitting sequence. ISC has shown to significantly improve the overall quality of predictive video coded stream over a lossy channel without complex modifications to standard video coders [7][8]. In this paper, ISC is evaluated over channels with memory. In particular, we analyze the impact of packet correlation [15][16] of the popular Gilbert model on ISC-based packet video over a wide range of packet loss probabilities. Simulations have shown that ISC advances the traditional method as either the loss rate increases or the packet correlation decreases. © 2005 IEEE.
- KSP 제안 키워드
- Channels with memory, Correlation network, Erasure Channel, Error resilient coding, Markov Decision process, Network Impairments, Overall Quality, Packet loss probability, Source Coding, Streaming applications, Traditional methods