Earticle

초록

영어

This paper addresses the question of whether or not the specific packet/frame lost, and in particular, its position relative to the I-frames, influences the quality of transmitted compressed video. We focus on the QCIF size video frame, one of the most pervasive video formats used across the Internet and cellular systems. Using the average Peak Signal to Noise Ratio (PSNR) of the received coded video to measure the amount of distortion, we demonstrate that the interval between the lost frame and the last I-frame does have a significant effect on quality. Furthermore, after investigating the probability of different burst loss lengths in noisy environments where the duration of data loss is almost constant, we propose a method for improving the performance of video streaming over noisy channels based on packet scheduling, without an increase in the bit rate.

목차

Abstract
 I. INTRODUCTION
 II. PREVIOUS WORK
 III. EFFECT OF FRAME LOSS POSITION ON DISTORTION
  A. Definitions
  B. Empirical observations
  C. Estimation model
 IV. SIMULATION AND NUMERIC RESULTS
 V. EFFECT OF TRANSMISSION PATTERN ON AVERAGE PSNRIN NOISY CHANNELS
  A. Packet loss model
  B. Simulation
 VI. CONCLUSION
 REFERENCES

키워드

저자

• Ahmad Vakili [ Energy, Materials, and Telecommunications (EMT), Institut national de la recherche scientifique (INRS), Montreal, Quebec, Canada ]
• Jean-Charles Grégoire [ Energy, Materials, and Telecommunications (EMT), Institut national de la recherche scientifique (INRS), Montreal, Quebec, Canada ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  JoC [Journal of Convergence]

• 간기

  계간

• pISSN

  2093-7741

• eISSN

  2093-775X

• 수록기간

  2010~2015

• 십진분류

  KDC 004 DDC 004