TY - GEN
T1 - Quality-based adaptive image transmission in multihop wireless mesh networks
AU - Wang, Wei
AU - Ci, Song
AU - Wang, Honggang
AU - Peng, Dongming
AU - Sharif, Hamid
PY - 2007
Y1 - 2007
N2 - Most multirate image processing applications in multihop Wireless Mesh Network (WMN) are delay-sensitive but loss-tolerant. However, joint optimization of image quality and multihop Effective Capacity (EC) has been largely ignored in the current image transmission schemes in WMN. In this paper, we propose a new quality based cross-layer approach to adaptively optimize the image quality at the receiver side while satisfying the Quality of Service (QoS) requirements by exploring image position and value of magnitude (P-V) diversity. Specifically, the maximum multihop Effective Capacity (EC) is determined by QoS parameters and current link status of each path, and then the optimal source coding rate is selected by considering the position and value of magnitude information (F-V) of multirate image processing applications, which significantly increases expected image quality. Simulation results show that the proposed approach achieves better decoded image quality under the same QoS constraints.
AB - Most multirate image processing applications in multihop Wireless Mesh Network (WMN) are delay-sensitive but loss-tolerant. However, joint optimization of image quality and multihop Effective Capacity (EC) has been largely ignored in the current image transmission schemes in WMN. In this paper, we propose a new quality based cross-layer approach to adaptively optimize the image quality at the receiver side while satisfying the Quality of Service (QoS) requirements by exploring image position and value of magnitude (P-V) diversity. Specifically, the maximum multihop Effective Capacity (EC) is determined by QoS parameters and current link status of each path, and then the optimal source coding rate is selected by considering the position and value of magnitude information (F-V) of multirate image processing applications, which significantly increases expected image quality. Simulation results show that the proposed approach achieves better decoded image quality under the same QoS constraints.
KW - Digital image processing
KW - Effective capacity
KW - Multihop wireless mesh network
UR - http://www.scopus.com/inward/record.url?scp=43949120437&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=43949120437&partnerID=8YFLogxK
U2 - 10.1109/CHINACOM.2007.4469539
DO - 10.1109/CHINACOM.2007.4469539
M3 - Conference contribution
AN - SCOPUS:43949120437
SN - 9781424410095
T3 - Proceedings of the Second International Conference on Communications and Networking in China, ChinaCom 2007
SP - 942
EP - 946
BT - Proceedings of the Second International Conference on Communications and Networking in China, ChinaCom 2007
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2007 2nd International Conference on Communications and Networking in China, ChinaCom 2007
Y2 - 22 August 2007 through 24 August 2007
ER -