Abstract
Packet video transmission over wireless networks is expected to experience bursty packet losses due to noise, interference, multipath effects and the motion of mobile hosts. In order to achieve satisfactory end-to-end video quality in such an environment, we first demonstrate the necessity of adapting to both the source and channel dynamic information at the source encoding side using a combination of adaptive packetization and adaptive infra-updating. We then describe the implementation of an adaptive source encoder which can adaptively adjust its packetization scheme and intra-updating rate according to both the source motion information and channel feedback. Here, motion information is estimated by an exponential weighted moving average (EWMA) approach and channel feedback is provided by RTCP return packets. Finally, we demonstrate the advantages of exploiting source/channel dynamic information through selected simulation results. However, we show that imperfect channel feedback can sometimes be detrimental to system performance.
| Original language | English |
|---|---|
| Title of host publication | Proceedings - IEEE Military Communications Conference MILCOM |
| Pages | 848-854 |
| Number of pages | 7 |
| Volume | 2 |
| State | Published - Dec 1 2004 |
| Event | MILCOM 2004 - 2004 IEEE Military Communications Conference - Monterey, CA, United States Duration: Oct 31 2004 → Nov 3 2004 |
Other
| Other | MILCOM 2004 - 2004 IEEE Military Communications Conference |
|---|---|
| Country | United States |
| City | Monterey, CA |
| Period | 10/31/04 → 11/3/04 |
Fingerprint
Keywords
- Channel Feedback
- Intra-Updating
- Motion-Level
- Packet Loss
- Packetization
- Video Coding
- Wireless Network
ASJC Scopus subject areas
- Civil and Structural Engineering
- Electrical and Electronic Engineering
Cite this
Network-aware source-adaptive video coding for wireless applications. / Qu, Qi; Pei, Yong; Tian, Xusheng; Modestino, James W.
Proceedings - IEEE Military Communications Conference MILCOM. Vol. 2 2004. p. 848-854.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Network-aware source-adaptive video coding for wireless applications
AU - Qu, Qi
AU - Pei, Yong
AU - Tian, Xusheng
AU - Modestino, James W.
PY - 2004/12/1
Y1 - 2004/12/1
N2 - Packet video transmission over wireless networks is expected to experience bursty packet losses due to noise, interference, multipath effects and the motion of mobile hosts. In order to achieve satisfactory end-to-end video quality in such an environment, we first demonstrate the necessity of adapting to both the source and channel dynamic information at the source encoding side using a combination of adaptive packetization and adaptive infra-updating. We then describe the implementation of an adaptive source encoder which can adaptively adjust its packetization scheme and intra-updating rate according to both the source motion information and channel feedback. Here, motion information is estimated by an exponential weighted moving average (EWMA) approach and channel feedback is provided by RTCP return packets. Finally, we demonstrate the advantages of exploiting source/channel dynamic information through selected simulation results. However, we show that imperfect channel feedback can sometimes be detrimental to system performance.
AB - Packet video transmission over wireless networks is expected to experience bursty packet losses due to noise, interference, multipath effects and the motion of mobile hosts. In order to achieve satisfactory end-to-end video quality in such an environment, we first demonstrate the necessity of adapting to both the source and channel dynamic information at the source encoding side using a combination of adaptive packetization and adaptive infra-updating. We then describe the implementation of an adaptive source encoder which can adaptively adjust its packetization scheme and intra-updating rate according to both the source motion information and channel feedback. Here, motion information is estimated by an exponential weighted moving average (EWMA) approach and channel feedback is provided by RTCP return packets. Finally, we demonstrate the advantages of exploiting source/channel dynamic information through selected simulation results. However, we show that imperfect channel feedback can sometimes be detrimental to system performance.
KW - Channel Feedback
KW - Intra-Updating
KW - Motion-Level
KW - Packet Loss
KW - Packetization
KW - Video Coding
KW - Wireless Network
UR - http://www.scopus.com/inward/record.url?scp=27744543837&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=27744543837&partnerID=8YFLogxK
M3 - Conference contribution
VL - 2
SP - 848
EP - 854
BT - Proceedings - IEEE Military Communications Conference MILCOM
ER -