TY - GEN
T1 - Layered video streams over wireless ad hoc campus networks
AU - Man, Hong
AU - Li, Yang
N1 - Publisher Copyright:
© 2002 IEEE.
PY - 2002
Y1 - 2002
N2 - This paper presents a new transport scheme for layered video streams over wireless ad hoc networks. An efficient 3-D subband video coder is used in generating multi-layer source data streams. The underlay wireless ad hoc network is specially designed for a campus environment. The video coding algorithm features a 3-D symmetric lapped transform for both spatial and temporal decorrelation. Its block based bitplane coding procedure generates progressive bit streams that can be segmented into multiple resolution layers. In ad hoc network, a class based queuing (CBQ) mechanism is employed to provide differentiated services (Diff-Serv) for different data stream layers. This integrated networking system prioritizes the layers for lower resolutions or with higher error sensitivities, so that they will experience less delay or packet loss in case of congestion or link breakage. Through this approach, the advantage of progressive source coding is effectively exploited, and it is incorporated with DiffServ networking technique to improve the overall system performance. Simulations have been conducted on the network simulator (ns-2), and some results are presented in this paper.
AB - This paper presents a new transport scheme for layered video streams over wireless ad hoc networks. An efficient 3-D subband video coder is used in generating multi-layer source data streams. The underlay wireless ad hoc network is specially designed for a campus environment. The video coding algorithm features a 3-D symmetric lapped transform for both spatial and temporal decorrelation. Its block based bitplane coding procedure generates progressive bit streams that can be segmented into multiple resolution layers. In ad hoc network, a class based queuing (CBQ) mechanism is employed to provide differentiated services (Diff-Serv) for different data stream layers. This integrated networking system prioritizes the layers for lower resolutions or with higher error sensitivities, so that they will experience less delay or packet loss in case of congestion or link breakage. Through this approach, the advantage of progressive source coding is effectively exploited, and it is incorporated with DiffServ networking technique to improve the overall system performance. Simulations have been conducted on the network simulator (ns-2), and some results are presented in this paper.
UR - http://www.scopus.com/inward/record.url?scp=84954306830&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84954306830&partnerID=8YFLogxK
U2 - 10.1109/DSPWS.2002.1231138
DO - 10.1109/DSPWS.2002.1231138
M3 - Conference contribution
AN - SCOPUS:84954306830
T3 - Proceedings of 2002 IEEE 10th Digital Signal Processing Workshop, DSP 2002 and 2nd Signal Processing Education Workshop, SPE 2002
SP - 387
EP - 391
BT - Proceedings of 2002 IEEE 10th Digital Signal Processing Workshop, DSP 2002 and 2nd Signal Processing Education Workshop, SPE 2002
T2 - 10th IEEE Digital Signal Processing Workshop, DSP 2002 and the 2nd IEEE Workshop on Signal Processing Education, SPE 2002
Y2 - 13 October 2002 through 16 October 2002
ER -