논문 해외 국제전문학술지(SCI급) ESTIMATION OF ACCURATE EFFECTIVE LOSS RATE FOR FEC VIDEO TRANSMISSION
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2014-07
- 저자명 김진수
- 학술지명 SIGNAL PROCESSING-IMAGE COMMUNICATION
- 발행처명 ELSEVIER SCIENCE BV
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 5
홈페이지논문 초록 (Abstract)
We propose an algorithm for adjusting data transmission parameters, such as the packet size and the code rate of forward error correcti on (FEC), to obtain maximum video quality under dynamic channel conditions. When determining transmissionparameters, it is essential to calculate an accurate effective loss rate that reflects FEC recovery failures and over-deadline packets. To this end, we analyz e the delays caused by FEC coding and the potential packet size variati ons. In our analysis,we consider the effect of delayed transmission o f video packets incurred by the parity packets as well as the enco der and decoder buffers. With the analysis reflecting the delay ef fect, we are able to accurately estimate the delay patterns of all vide o packets. Based on the analysis results, we establish an accurate mo del for estimating the effective loss rate.Simulations show that the proposed effective loss rate model accurately estimates the effect ive loss rate and significantly improves the reconstructed video qualit y at the receiver. (C) 2014 Elsevier B.V. All rights reserved.