Title :
A self-regulated redundancy control scheme for wireless video transmission
Author :
Shih, C.H. ; Tou, Y.M. ; Shieh, C.K. ; Hwang, W.S.
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
This paper presents a self-regulated redundancy control scheme for high-bit-rate video transmission using packet-level forward-error-correction (FEC) codes over error-prone wireless networks. The effectiveness of FEC on video is obtained by regulating its redundancy cost to balance that tradeoff of bandwidth utilization and FEC efficiency based on channel status, temporal dependency of video frames, and network congestion level. Experimental results show the proposed scheme maintains the desired quality-of-service (QoS) control over unloaded networks with the realistically measured wireless loss trace in 802.11b WLAN and over loaded networks, the adverse effect of FEC efficiency due to blindly increasing redundancy can be reduced to achieve the better video quality.
Keywords :
bandwidth allocation; error correction codes; quality of service; radio networks; self-adjusting systems; telecommunication congestion control; video coding; video communication; FEC; bandwidth utilization; error-prone wireless networks; network congestion level; packet-level forward-error-correction codes; quality-of-service; self-regulated redundancy control scheme; wireless video transmission; Bandwidth; Costs; Error correction codes; Forward error correction; Linear discriminant analysis; Propagation losses; Quality of service; Redundancy; Throughput; Wireless networks; FEC; Video transmission; Wireless channels;
Conference_Titel :
Wireless Networks, Communications and Mobile Computing, 2005 International Conference on
Print_ISBN :
0-7803-9305-8
DOI :
10.1109/WIRLES.2005.1549449
